The Colonist - Part II: Landing












7














This is the second part of a series of questions I'll ask about a self-sustaining colonization ship. I'll keep editing this post as things unfold.



If you can, check out the other questions of this series for a bigger picture:



Part I - Construction





Some Context



Each Colonist journey is a one way trip to a new world. There aren't resources or space enough for another 20~200 year trip back, so the people in the ship (about 100 individuals) must be equipped with whatever they might need to start a new civilization from the ground up.



The original idea is that these giant vessels are not meant to come back home, they're meant to BE home. And this is the main point of this question, since every Colonist must take the passengers to the new world AND serve as a first base of operations to aid them in the creation of a new colony.



Once the Colonist reaches its destination, it will enter the planet and make a landing - after a geological survey to find the best landing place possible, they set the coordinates and start to descend into their new home.



However, this ship is massive and I have doubts about how feasible it is for this landing to take place.





The Question



Taking into consideration the massive ship discussed in Part I, I'd like to know:



Is it possible for this ship to safely make this landing?



Things to consider for this question:




  • The destination planet is exactly like Earth except unpopulated;

  • The geological survey is but a BS excuse. I'm basically saying they'll ALWAYS find the perfect landing zone;

  • Safely means no casualties among the crew - but the ship and the cargo can be damaged during the descent;

  • The world can't be damaged enough to become uninhabitable (this is here because I've been told that a large enough body might actually burn the world's atmosphere - which is something that a terraforming crew obviously does not want);










share|improve this question
























  • In the first question I've said that this ship should be carrying about 100 people. I'll put that here too.
    – Magus
    2 days ago






  • 1




    If the other question is a necessary read to answer this question then consider inlining the relevant parts so this question could stand alone.
    – dot_Sp0T
    2 days ago






  • 1




    The answer to your question varies massively based on the technology level which is assumed for the colony ship. While there is some mention of technology level in the question you've linked, there's nothing about it in this question. Questions must be self-contained. As such, this question is either unclear or too broad. Please edit to include the basics of the technology level assumed for this question.
    – Makyen
    yesterday
















7














This is the second part of a series of questions I'll ask about a self-sustaining colonization ship. I'll keep editing this post as things unfold.



If you can, check out the other questions of this series for a bigger picture:



Part I - Construction





Some Context



Each Colonist journey is a one way trip to a new world. There aren't resources or space enough for another 20~200 year trip back, so the people in the ship (about 100 individuals) must be equipped with whatever they might need to start a new civilization from the ground up.



The original idea is that these giant vessels are not meant to come back home, they're meant to BE home. And this is the main point of this question, since every Colonist must take the passengers to the new world AND serve as a first base of operations to aid them in the creation of a new colony.



Once the Colonist reaches its destination, it will enter the planet and make a landing - after a geological survey to find the best landing place possible, they set the coordinates and start to descend into their new home.



However, this ship is massive and I have doubts about how feasible it is for this landing to take place.





The Question



Taking into consideration the massive ship discussed in Part I, I'd like to know:



Is it possible for this ship to safely make this landing?



Things to consider for this question:




  • The destination planet is exactly like Earth except unpopulated;

  • The geological survey is but a BS excuse. I'm basically saying they'll ALWAYS find the perfect landing zone;

  • Safely means no casualties among the crew - but the ship and the cargo can be damaged during the descent;

  • The world can't be damaged enough to become uninhabitable (this is here because I've been told that a large enough body might actually burn the world's atmosphere - which is something that a terraforming crew obviously does not want);










share|improve this question
























  • In the first question I've said that this ship should be carrying about 100 people. I'll put that here too.
    – Magus
    2 days ago






  • 1




    If the other question is a necessary read to answer this question then consider inlining the relevant parts so this question could stand alone.
    – dot_Sp0T
    2 days ago






  • 1




    The answer to your question varies massively based on the technology level which is assumed for the colony ship. While there is some mention of technology level in the question you've linked, there's nothing about it in this question. Questions must be self-contained. As such, this question is either unclear or too broad. Please edit to include the basics of the technology level assumed for this question.
    – Makyen
    yesterday














7












7








7







This is the second part of a series of questions I'll ask about a self-sustaining colonization ship. I'll keep editing this post as things unfold.



If you can, check out the other questions of this series for a bigger picture:



Part I - Construction





Some Context



Each Colonist journey is a one way trip to a new world. There aren't resources or space enough for another 20~200 year trip back, so the people in the ship (about 100 individuals) must be equipped with whatever they might need to start a new civilization from the ground up.



The original idea is that these giant vessels are not meant to come back home, they're meant to BE home. And this is the main point of this question, since every Colonist must take the passengers to the new world AND serve as a first base of operations to aid them in the creation of a new colony.



Once the Colonist reaches its destination, it will enter the planet and make a landing - after a geological survey to find the best landing place possible, they set the coordinates and start to descend into their new home.



However, this ship is massive and I have doubts about how feasible it is for this landing to take place.





The Question



Taking into consideration the massive ship discussed in Part I, I'd like to know:



Is it possible for this ship to safely make this landing?



Things to consider for this question:




  • The destination planet is exactly like Earth except unpopulated;

  • The geological survey is but a BS excuse. I'm basically saying they'll ALWAYS find the perfect landing zone;

  • Safely means no casualties among the crew - but the ship and the cargo can be damaged during the descent;

  • The world can't be damaged enough to become uninhabitable (this is here because I've been told that a large enough body might actually burn the world's atmosphere - which is something that a terraforming crew obviously does not want);










share|improve this question















This is the second part of a series of questions I'll ask about a self-sustaining colonization ship. I'll keep editing this post as things unfold.



If you can, check out the other questions of this series for a bigger picture:



Part I - Construction





Some Context



Each Colonist journey is a one way trip to a new world. There aren't resources or space enough for another 20~200 year trip back, so the people in the ship (about 100 individuals) must be equipped with whatever they might need to start a new civilization from the ground up.



The original idea is that these giant vessels are not meant to come back home, they're meant to BE home. And this is the main point of this question, since every Colonist must take the passengers to the new world AND serve as a first base of operations to aid them in the creation of a new colony.



Once the Colonist reaches its destination, it will enter the planet and make a landing - after a geological survey to find the best landing place possible, they set the coordinates and start to descend into their new home.



However, this ship is massive and I have doubts about how feasible it is for this landing to take place.





The Question



Taking into consideration the massive ship discussed in Part I, I'd like to know:



Is it possible for this ship to safely make this landing?



Things to consider for this question:




  • The destination planet is exactly like Earth except unpopulated;

  • The geological survey is but a BS excuse. I'm basically saying they'll ALWAYS find the perfect landing zone;

  • Safely means no casualties among the crew - but the ship and the cargo can be damaged during the descent;

  • The world can't be damaged enough to become uninhabitable (this is here because I've been told that a large enough body might actually burn the world's atmosphere - which is something that a terraforming crew obviously does not want);







science-based reality-check space-travel spaceships






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited yesterday







Magus

















asked 2 days ago









MagusMagus

2,409930




2,409930












  • In the first question I've said that this ship should be carrying about 100 people. I'll put that here too.
    – Magus
    2 days ago






  • 1




    If the other question is a necessary read to answer this question then consider inlining the relevant parts so this question could stand alone.
    – dot_Sp0T
    2 days ago






  • 1




    The answer to your question varies massively based on the technology level which is assumed for the colony ship. While there is some mention of technology level in the question you've linked, there's nothing about it in this question. Questions must be self-contained. As such, this question is either unclear or too broad. Please edit to include the basics of the technology level assumed for this question.
    – Makyen
    yesterday


















  • In the first question I've said that this ship should be carrying about 100 people. I'll put that here too.
    – Magus
    2 days ago






  • 1




    If the other question is a necessary read to answer this question then consider inlining the relevant parts so this question could stand alone.
    – dot_Sp0T
    2 days ago






  • 1




    The answer to your question varies massively based on the technology level which is assumed for the colony ship. While there is some mention of technology level in the question you've linked, there's nothing about it in this question. Questions must be self-contained. As such, this question is either unclear or too broad. Please edit to include the basics of the technology level assumed for this question.
    – Makyen
    yesterday
















In the first question I've said that this ship should be carrying about 100 people. I'll put that here too.
– Magus
2 days ago




In the first question I've said that this ship should be carrying about 100 people. I'll put that here too.
– Magus
2 days ago




1




1




If the other question is a necessary read to answer this question then consider inlining the relevant parts so this question could stand alone.
– dot_Sp0T
2 days ago




If the other question is a necessary read to answer this question then consider inlining the relevant parts so this question could stand alone.
– dot_Sp0T
2 days ago




1




1




The answer to your question varies massively based on the technology level which is assumed for the colony ship. While there is some mention of technology level in the question you've linked, there's nothing about it in this question. Questions must be self-contained. As such, this question is either unclear or too broad. Please edit to include the basics of the technology level assumed for this question.
– Makyen
yesterday




The answer to your question varies massively based on the technology level which is assumed for the colony ship. While there is some mention of technology level in the question you've linked, there's nothing about it in this question. Questions must be self-contained. As such, this question is either unclear or too broad. Please edit to include the basics of the technology level assumed for this question.
– Makyen
yesterday










9 Answers
9






active

oldest

votes


















8














I think it is possible. Considering that the initial period after landing will be the most harsh, having to rely only on carried along resources, I would opt for the strategy of:




  • While carrying out the survey, park the ship in orbit around the planet

  • Disassemble the ship into smaller modules, each equipped with heat shield and parachute, and fit it as a self standing building.

  • Land each module independently


In this way a problem during a landing procedure will compromise only a fraction of the total set of structures, and, even accounting for different landing locations, it will be easier to move a small module than a large ship, should it be needed.






share|improve this answer





















  • Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
    – Magus
    2 days ago










  • Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
    – D.Spetz
    yesterday










  • I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
    – Magus
    6 hours ago



















9















Why land at all?



You and I live on a planet. That's what we are used to.



But these colonists have lived for decades (centuries) in a finely-tuned space habitat. It seems temporary to us...but for them the habitat is 'home'.



They are in space, near a new star (source of energy), with plenty of asteroids and moons and comets at hand (resources). Everything they need to build new orbital habitats and maintain the life they are used to.



Some adventurous folks and scientists are likely to climb down the gravity well to the attractive earth-like planet. There might even be some outposts down there for various reasons. But civilization and the bulk of the population will be space-based, just like their ancestors.






share|improve this answer





















  • Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
    – BittermanAndy
    2 days ago










  • "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
    – Alexander
    2 days ago












  • @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
    – user535733
    2 days ago












  • They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
    – Alexander
    2 days ago










  • The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
    – Alexander
    yesterday



















6














Plan to land only what you need



Much of the colony ship has no reason to land.




  • The stardrive and its fuel tanks

  • Maneuvering thrusters and their fuel tanks

  • The shielding

  • Command and Engineering

  • Air recycling (you might want water and waste recycling)


The list probably goes on for some considerable time. There'll be large amounts of empty space formerly taken up by stores for the journey that's just not needed any more. All of this extra mass and volume would need to be shielded for re-entry greatly increasing the amount of mass unnecessarily being hauled across space. So plan to leave it all in orbit and only take what you need. The rest of the ship can stay in orbit as your first communications satellite.



Eggs and baskets



Don't keep all of the former in one of the latter.



While you're sending three ships, entering an atmosphere is a very high risk activity, the fewer of your eggs you have in each basket the safer you're going to be. Break required parts of the ship down into separate re-entry modules, no more than one critical element in each pod. Make sure you don't lose too much if any one pod is lost.






share|improve this answer























  • Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
    – Magus
    2 days ago






  • 2




    @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
    – Separatrix
    2 days ago








  • 2




    The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
    – NotMe
    2 days ago










  • @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
    – Mark
    yesterday



















4














This started as a comment on L.Dutchs answer



Bizzarely i actually built a similar ship to what you are referring to in Kerbal Space Program a year or so ago... i wouldn't recommend doing this as i had about 8 fps when leaving Kerbin Orbit... it took awhile.



You need to build you ship modularly with all the components you'd want to have on the landed colony. and then each module can be landed seperately, whether that be with parachutes and heat shields. You do this is for several reasons




  1. Redundency: if there is a failure to land a module, that's all you lose

  2. Efficiency, different modules will require different locations, you'll want water so being near a water source is required, but the best location to mine for metals extra might be miles away from the nearest water source, so being able to land the different modules in their different ideal locations and not have to move them later is a huge efficiency boost


So you could easily have an Ikea home flat packed with a descent module that would build the areas of housing, which would have the required modules positioned nearby, whereas the mining systems etc can be landed where those required materials are highest.



Once all the habitation and systems modules are landed, what about the rest of the ship... well there is a lot of valuable materials on board that ship, so landing them allows them to be recovered. There's no benefit to leaving it in orbit as its orbit will eventually degrade and reenter the atmosphere possible onto the colony... not ideal... and maintaining orbit will be costly in terms of remaining resources left on board. and that colony will not leave the planet to venture further for another world for a serious amount of time, by which time the systems would likely have degraded to beyond usefulness.



And don't forget that as you approach the planet you'll want to launch several satellites, for GPS, Weather and Communications.






share|improve this answer





















  • Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
    – Magus
    2 days ago










  • Yeah that is a fine idea.
    – Willk
    yesterday



















1














In theory, yes it can.
But bringing such a giant ship in the athmosphere comes with some problems.



First you have to keep it from breaking apart. Usually the descend comes with lots of vibrations which might break the ship apart.



The next problem you might encounter is the giant heat shield such a big ship would need. (Also I don't know how much a descend like that would heat up the athmosphere)



So you could disassemble the ship in orbit and land small parts of it (I guess that is the way such an undertaking would actually be done) or



If your ship has plenty of fuel or whatever powersource it uses to power its engines and if the engines are strong enough, you could simply slow down the descend to a speed where the heating is no big deal. If you descend slow enough none of the problems would appear.



Using the athmosphere as a break is only done to save fuel. If you have plenty, then you don't need to do that.






share|improve this answer





























    1














    Space Elevator



    As a riff on the why land at all, consider parking the colony ship in geosynchronous orbit. Have it stocked with a set of GPS, weather and communication satellites which get dispersed around the planet, as well as some limited high tech foundries and a space elevator.



    The colony ship serves as a support station ferrying hard to produce parts down as well as maintaining orbital assets until the colony is able to provide for itself.



    Most of the colonial equipment will just makes a one way trip down the elevator. The empty space in the ship can then be converted into a university/museum of life back on Earth.






    share|improve this answer





























      1














      Okay, I know that other people have already said that you want to bring down the ship in sections, but I'm going to provide another reason to do so:



      It's much easier to land things that aren't the size of skyscrapers.



      Square-Cube



      Take a really long piece of wood, and hold it horizontal. You'll notice it bends very easily, especially if you shake it. Now scale down the piece of wood, keeping the aspect ratios the same, and try shaking it. It won't bend. If your structure is bigger, it is relatively weaker than something scaled down. Square-Cube law again. If you have a structural failure, then your ship is now...



      Aerodynamic Instability



      There's also the matter of aerodynamic instability, a.k.a please don't spin out and fly apart in a massive explosion at 7km/s. This is going to involve reconfiguring the ship so that its center of mass is directly in front of the center of pressure. Rather than disassembling the ship and then reassembling it to get aerodynamic stability, just disassemble it and send the pieces down one at a time. It's safer that way. No need to worry about a poor job rebuilding the ship.



      Ground Pressure



      Finally, skyscrapers have foundations. Your ship does not. There is no infrastructure on the planet to build a suitable landing site for a skyscraper. A space-shuttle-sized module will be light enough to not immediately sink into the ground and/or fall over when landing.






      share|improve this answer





























        0














        You usually do not want to land large ships because it takes very large amount of energy to get them back to space, but if your ship is designed as a one way vehicle that's then to be used as habitat and will never fly again, then landing is not a problem.



        There are a few things to consider though:




        1. To slow down a massive ship like that enough to do an orbit insertion, you'll need massive amounts of energy / propellan . Assuming your ship has traveled to another star, at I'm guessing some significant fraction of the speed of light, we can safely assume you can hand wave this away.


        2. You might want to look into using a skip-reentry (with multiple skips) instead of more traditional aerodynamic braking to reduce the high heating loads.



        https://en.wikipedia.org/wiki/Boost-glide






        share|improve this answer





























          -1














          Lay it down nice and slow.



          Your colony ship will settle down very gradually and by doing so will sidestep heating in the atmosphere and also stresses on the ship.



          It will not orbit, because orbit requires fast speeds that will then need to be shed as heat into the atmosphere. It will use its engines to counter the pull of gravity as it approaches from space, and ease its way into the atmosphere at subsonic speed.



          In addition, once in the atmosphere the ship will deploy colossal hydrogen floats, making it neutrally buoyant.



          https://en.wikipedia.org/wiki/Atmospheric_entry




          An alternative low velocity method of controlled atmospheric entry is
          buoyancy which is suitable for planetary entry where thick
          atmospheres, strong gravity, or both factors complicate high-velocity
          hyperbolic entry.




          Here the hugeness of the ship complicates high velocity hyperbolic entry. Buoyancy will be adjusted with controlled release of hydrogen. This will allow the ship to turn its engines off while high above the planet, and gradually settle down like a giant balloon coming to rest.



          This will minimize stresses on the ship, heating of the ship and the atmosphere, and impact on the ground below.



          I forgot to mention that klaxons will sound as the ship nears touchdown, so local wildlife can clear the area.






          share|improve this answer





















          • A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
            – Mark
            yesterday











          Your Answer





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          9 Answers
          9






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          9 Answers
          9






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

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          8














          I think it is possible. Considering that the initial period after landing will be the most harsh, having to rely only on carried along resources, I would opt for the strategy of:




          • While carrying out the survey, park the ship in orbit around the planet

          • Disassemble the ship into smaller modules, each equipped with heat shield and parachute, and fit it as a self standing building.

          • Land each module independently


          In this way a problem during a landing procedure will compromise only a fraction of the total set of structures, and, even accounting for different landing locations, it will be easier to move a small module than a large ship, should it be needed.






          share|improve this answer





















          • Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
            – Magus
            2 days ago










          • Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
            – D.Spetz
            yesterday










          • I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
            – Magus
            6 hours ago
















          8














          I think it is possible. Considering that the initial period after landing will be the most harsh, having to rely only on carried along resources, I would opt for the strategy of:




          • While carrying out the survey, park the ship in orbit around the planet

          • Disassemble the ship into smaller modules, each equipped with heat shield and parachute, and fit it as a self standing building.

          • Land each module independently


          In this way a problem during a landing procedure will compromise only a fraction of the total set of structures, and, even accounting for different landing locations, it will be easier to move a small module than a large ship, should it be needed.






          share|improve this answer





















          • Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
            – Magus
            2 days ago










          • Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
            – D.Spetz
            yesterday










          • I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
            – Magus
            6 hours ago














          8












          8








          8






          I think it is possible. Considering that the initial period after landing will be the most harsh, having to rely only on carried along resources, I would opt for the strategy of:




          • While carrying out the survey, park the ship in orbit around the planet

          • Disassemble the ship into smaller modules, each equipped with heat shield and parachute, and fit it as a self standing building.

          • Land each module independently


          In this way a problem during a landing procedure will compromise only a fraction of the total set of structures, and, even accounting for different landing locations, it will be easier to move a small module than a large ship, should it be needed.






          share|improve this answer












          I think it is possible. Considering that the initial period after landing will be the most harsh, having to rely only on carried along resources, I would opt for the strategy of:




          • While carrying out the survey, park the ship in orbit around the planet

          • Disassemble the ship into smaller modules, each equipped with heat shield and parachute, and fit it as a self standing building.

          • Land each module independently


          In this way a problem during a landing procedure will compromise only a fraction of the total set of structures, and, even accounting for different landing locations, it will be easier to move a small module than a large ship, should it be needed.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 days ago









          L.DutchL.Dutch

          78.6k26188383




          78.6k26188383












          • Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
            – Magus
            2 days ago










          • Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
            – D.Spetz
            yesterday










          • I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
            – Magus
            6 hours ago


















          • Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
            – Magus
            2 days ago










          • Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
            – D.Spetz
            yesterday










          • I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
            – Magus
            6 hours ago
















          Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
          – Magus
          2 days ago




          Thanks for this. You and @Separatrix basically nailed this question. Such a simple answer and it really never crossed my mind.
          – Magus
          2 days ago












          Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
          – D.Spetz
          yesterday




          Going off of the other answers, I would also suggest leaving the core of the ship in orbit. Possibly with a skeleton crew left aboard. This way you have a ready to go spacestation in case you want to get back outside of the local gravity well for any reason. Plus it could act as a limited satellite for comms or gps.
          – D.Spetz
          yesterday












          I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
          – Magus
          6 hours ago




          I've made my decision. This gets the answer because @L.Dutch was the first to suggest modular landing, which I think is the best way to approach this. The other answers were great and gave me a lot of ideas on how to proceed taking this as a starting point.
          – Magus
          6 hours ago











          9















          Why land at all?



          You and I live on a planet. That's what we are used to.



          But these colonists have lived for decades (centuries) in a finely-tuned space habitat. It seems temporary to us...but for them the habitat is 'home'.



          They are in space, near a new star (source of energy), with plenty of asteroids and moons and comets at hand (resources). Everything they need to build new orbital habitats and maintain the life they are used to.



          Some adventurous folks and scientists are likely to climb down the gravity well to the attractive earth-like planet. There might even be some outposts down there for various reasons. But civilization and the bulk of the population will be space-based, just like their ancestors.






          share|improve this answer





















          • Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
            – BittermanAndy
            2 days ago










          • "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
            – Alexander
            2 days ago












          • @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
            – user535733
            2 days ago












          • They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
            – Alexander
            2 days ago










          • The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
            – Alexander
            yesterday
















          9















          Why land at all?



          You and I live on a planet. That's what we are used to.



          But these colonists have lived for decades (centuries) in a finely-tuned space habitat. It seems temporary to us...but for them the habitat is 'home'.



          They are in space, near a new star (source of energy), with plenty of asteroids and moons and comets at hand (resources). Everything they need to build new orbital habitats and maintain the life they are used to.



          Some adventurous folks and scientists are likely to climb down the gravity well to the attractive earth-like planet. There might even be some outposts down there for various reasons. But civilization and the bulk of the population will be space-based, just like their ancestors.






          share|improve this answer





















          • Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
            – BittermanAndy
            2 days ago










          • "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
            – Alexander
            2 days ago












          • @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
            – user535733
            2 days ago












          • They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
            – Alexander
            2 days ago










          • The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
            – Alexander
            yesterday














          9












          9








          9







          Why land at all?



          You and I live on a planet. That's what we are used to.



          But these colonists have lived for decades (centuries) in a finely-tuned space habitat. It seems temporary to us...but for them the habitat is 'home'.



          They are in space, near a new star (source of energy), with plenty of asteroids and moons and comets at hand (resources). Everything they need to build new orbital habitats and maintain the life they are used to.



          Some adventurous folks and scientists are likely to climb down the gravity well to the attractive earth-like planet. There might even be some outposts down there for various reasons. But civilization and the bulk of the population will be space-based, just like their ancestors.






          share|improve this answer













          Why land at all?



          You and I live on a planet. That's what we are used to.



          But these colonists have lived for decades (centuries) in a finely-tuned space habitat. It seems temporary to us...but for them the habitat is 'home'.



          They are in space, near a new star (source of energy), with plenty of asteroids and moons and comets at hand (resources). Everything they need to build new orbital habitats and maintain the life they are used to.



          Some adventurous folks and scientists are likely to climb down the gravity well to the attractive earth-like planet. There might even be some outposts down there for various reasons. But civilization and the bulk of the population will be space-based, just like their ancestors.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 days ago









          user535733user535733

          7,91921733




          7,91921733












          • Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
            – BittermanAndy
            2 days ago










          • "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
            – Alexander
            2 days ago












          • @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
            – user535733
            2 days ago












          • They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
            – Alexander
            2 days ago










          • The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
            – Alexander
            yesterday


















          • Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
            – BittermanAndy
            2 days ago










          • "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
            – Alexander
            2 days ago












          • @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
            – user535733
            2 days ago












          • They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
            – Alexander
            2 days ago










          • The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
            – Alexander
            yesterday
















          Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
          – BittermanAndy
          2 days ago




          Agreed. The space habitat must already be capable of being a home for generations, so what is gained by landing it on a planet? (The limited population size it supports might mean some colonists might choose to leave the habitat and go to a planet, and it may be useful to mine more resources from that planet and take them to the habitat, but the habitat itself can stay in orbit).
          – BittermanAndy
          2 days ago












          "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
          – Alexander
          2 days ago






          "Capable" does not mean "optimal". It's like someone is moving across the country, sleeping in his car. Upon arriving to destination, park the car in the driveway of his new house and keep sleeping in it. This is a "sleeper" ship, not generational ship.
          – Alexander
          2 days ago














          @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
          – user535733
          2 days ago






          @Alexander - I like houses, too...but THEY might see it differently if they have been sleeping in their car for decades already. "Optimal" may be culturally-based...and therefore culturally-biased.
          – user535733
          2 days ago














          They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
          – Alexander
          2 days ago




          They may get used to sleeping... I can relate to them, certainly... but the story needs them to wake up and start colonizing.
          – Alexander
          2 days ago












          The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
          – Alexander
          yesterday




          The colonists are terrestrial beings, they will miss green grass and blue sky. The ship probably doesn't even have living quarters, just sleeping berths. Remember, it's not a full generational ship where people get used to live, like in Heinlein's "Orphans of the Sky"
          – Alexander
          yesterday











          6














          Plan to land only what you need



          Much of the colony ship has no reason to land.




          • The stardrive and its fuel tanks

          • Maneuvering thrusters and their fuel tanks

          • The shielding

          • Command and Engineering

          • Air recycling (you might want water and waste recycling)


          The list probably goes on for some considerable time. There'll be large amounts of empty space formerly taken up by stores for the journey that's just not needed any more. All of this extra mass and volume would need to be shielded for re-entry greatly increasing the amount of mass unnecessarily being hauled across space. So plan to leave it all in orbit and only take what you need. The rest of the ship can stay in orbit as your first communications satellite.



          Eggs and baskets



          Don't keep all of the former in one of the latter.



          While you're sending three ships, entering an atmosphere is a very high risk activity, the fewer of your eggs you have in each basket the safer you're going to be. Break required parts of the ship down into separate re-entry modules, no more than one critical element in each pod. Make sure you don't lose too much if any one pod is lost.






          share|improve this answer























          • Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
            – Magus
            2 days ago






          • 2




            @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
            – Separatrix
            2 days ago








          • 2




            The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
            – NotMe
            2 days ago










          • @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
            – Mark
            yesterday
















          6














          Plan to land only what you need



          Much of the colony ship has no reason to land.




          • The stardrive and its fuel tanks

          • Maneuvering thrusters and their fuel tanks

          • The shielding

          • Command and Engineering

          • Air recycling (you might want water and waste recycling)


          The list probably goes on for some considerable time. There'll be large amounts of empty space formerly taken up by stores for the journey that's just not needed any more. All of this extra mass and volume would need to be shielded for re-entry greatly increasing the amount of mass unnecessarily being hauled across space. So plan to leave it all in orbit and only take what you need. The rest of the ship can stay in orbit as your first communications satellite.



          Eggs and baskets



          Don't keep all of the former in one of the latter.



          While you're sending three ships, entering an atmosphere is a very high risk activity, the fewer of your eggs you have in each basket the safer you're going to be. Break required parts of the ship down into separate re-entry modules, no more than one critical element in each pod. Make sure you don't lose too much if any one pod is lost.






          share|improve this answer























          • Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
            – Magus
            2 days ago






          • 2




            @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
            – Separatrix
            2 days ago








          • 2




            The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
            – NotMe
            2 days ago










          • @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
            – Mark
            yesterday














          6












          6








          6






          Plan to land only what you need



          Much of the colony ship has no reason to land.




          • The stardrive and its fuel tanks

          • Maneuvering thrusters and their fuel tanks

          • The shielding

          • Command and Engineering

          • Air recycling (you might want water and waste recycling)


          The list probably goes on for some considerable time. There'll be large amounts of empty space formerly taken up by stores for the journey that's just not needed any more. All of this extra mass and volume would need to be shielded for re-entry greatly increasing the amount of mass unnecessarily being hauled across space. So plan to leave it all in orbit and only take what you need. The rest of the ship can stay in orbit as your first communications satellite.



          Eggs and baskets



          Don't keep all of the former in one of the latter.



          While you're sending three ships, entering an atmosphere is a very high risk activity, the fewer of your eggs you have in each basket the safer you're going to be. Break required parts of the ship down into separate re-entry modules, no more than one critical element in each pod. Make sure you don't lose too much if any one pod is lost.






          share|improve this answer














          Plan to land only what you need



          Much of the colony ship has no reason to land.




          • The stardrive and its fuel tanks

          • Maneuvering thrusters and their fuel tanks

          • The shielding

          • Command and Engineering

          • Air recycling (you might want water and waste recycling)


          The list probably goes on for some considerable time. There'll be large amounts of empty space formerly taken up by stores for the journey that's just not needed any more. All of this extra mass and volume would need to be shielded for re-entry greatly increasing the amount of mass unnecessarily being hauled across space. So plan to leave it all in orbit and only take what you need. The rest of the ship can stay in orbit as your first communications satellite.



          Eggs and baskets



          Don't keep all of the former in one of the latter.



          While you're sending three ships, entering an atmosphere is a very high risk activity, the fewer of your eggs you have in each basket the safer you're going to be. Break required parts of the ship down into separate re-entry modules, no more than one critical element in each pod. Make sure you don't lose too much if any one pod is lost.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 2 days ago

























          answered 2 days ago









          SeparatrixSeparatrix

          78.7k31186308




          78.7k31186308












          • Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
            – Magus
            2 days ago






          • 2




            @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
            – Separatrix
            2 days ago








          • 2




            The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
            – NotMe
            2 days ago










          • @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
            – Mark
            yesterday


















          • Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
            – Magus
            2 days ago






          • 2




            @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
            – Separatrix
            2 days ago








          • 2




            The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
            – NotMe
            2 days ago










          • @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
            – Mark
            yesterday
















          Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
          – Magus
          2 days ago




          Just as a matter of information, would you happen to know if there is any kind of statistic related to re-entry success ratio?
          – Magus
          2 days ago




          2




          2




          @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
          – Separatrix
          2 days ago






          @Magus, for objects not designed for re-entry survival is 0%. In terms of craft designed for it, the Russians would consider it a national secret if they'd lost any and wouldn't admit it was a manned flight, the Chinese might be the same, so no stats would be meaningful. Columbia is an example of how little needs to go wrong to destroy a landing craft.
          – Separatrix
          2 days ago






          2




          2




          The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
          – NotMe
          2 days ago




          The Netflix reboot of Lost in Space basically shows this. They have numerous Jupiter ships attached to a main ship for transport. The main ship is not meant to land but the various Jupiter ships do.
          – NotMe
          2 days ago












          @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
          – Mark
          yesterday




          @Magus, manned re-entry on Earth has a 99% success rate, with three failures out of 320 flights. I don't have a number for re-entry by unmanned return vehicles (many of these were film-return capsules from early spy satellites, so the data is still highly classified). The success rate for objects not designed for re-entry is 0%.
          – Mark
          yesterday











          4














          This started as a comment on L.Dutchs answer



          Bizzarely i actually built a similar ship to what you are referring to in Kerbal Space Program a year or so ago... i wouldn't recommend doing this as i had about 8 fps when leaving Kerbin Orbit... it took awhile.



          You need to build you ship modularly with all the components you'd want to have on the landed colony. and then each module can be landed seperately, whether that be with parachutes and heat shields. You do this is for several reasons




          1. Redundency: if there is a failure to land a module, that's all you lose

          2. Efficiency, different modules will require different locations, you'll want water so being near a water source is required, but the best location to mine for metals extra might be miles away from the nearest water source, so being able to land the different modules in their different ideal locations and not have to move them later is a huge efficiency boost


          So you could easily have an Ikea home flat packed with a descent module that would build the areas of housing, which would have the required modules positioned nearby, whereas the mining systems etc can be landed where those required materials are highest.



          Once all the habitation and systems modules are landed, what about the rest of the ship... well there is a lot of valuable materials on board that ship, so landing them allows them to be recovered. There's no benefit to leaving it in orbit as its orbit will eventually degrade and reenter the atmosphere possible onto the colony... not ideal... and maintaining orbit will be costly in terms of remaining resources left on board. and that colony will not leave the planet to venture further for another world for a serious amount of time, by which time the systems would likely have degraded to beyond usefulness.



          And don't forget that as you approach the planet you'll want to launch several satellites, for GPS, Weather and Communications.






          share|improve this answer





















          • Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
            – Magus
            2 days ago










          • Yeah that is a fine idea.
            – Willk
            yesterday
















          4














          This started as a comment on L.Dutchs answer



          Bizzarely i actually built a similar ship to what you are referring to in Kerbal Space Program a year or so ago... i wouldn't recommend doing this as i had about 8 fps when leaving Kerbin Orbit... it took awhile.



          You need to build you ship modularly with all the components you'd want to have on the landed colony. and then each module can be landed seperately, whether that be with parachutes and heat shields. You do this is for several reasons




          1. Redundency: if there is a failure to land a module, that's all you lose

          2. Efficiency, different modules will require different locations, you'll want water so being near a water source is required, but the best location to mine for metals extra might be miles away from the nearest water source, so being able to land the different modules in their different ideal locations and not have to move them later is a huge efficiency boost


          So you could easily have an Ikea home flat packed with a descent module that would build the areas of housing, which would have the required modules positioned nearby, whereas the mining systems etc can be landed where those required materials are highest.



          Once all the habitation and systems modules are landed, what about the rest of the ship... well there is a lot of valuable materials on board that ship, so landing them allows them to be recovered. There's no benefit to leaving it in orbit as its orbit will eventually degrade and reenter the atmosphere possible onto the colony... not ideal... and maintaining orbit will be costly in terms of remaining resources left on board. and that colony will not leave the planet to venture further for another world for a serious amount of time, by which time the systems would likely have degraded to beyond usefulness.



          And don't forget that as you approach the planet you'll want to launch several satellites, for GPS, Weather and Communications.






          share|improve this answer





















          • Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
            – Magus
            2 days ago










          • Yeah that is a fine idea.
            – Willk
            yesterday














          4












          4








          4






          This started as a comment on L.Dutchs answer



          Bizzarely i actually built a similar ship to what you are referring to in Kerbal Space Program a year or so ago... i wouldn't recommend doing this as i had about 8 fps when leaving Kerbin Orbit... it took awhile.



          You need to build you ship modularly with all the components you'd want to have on the landed colony. and then each module can be landed seperately, whether that be with parachutes and heat shields. You do this is for several reasons




          1. Redundency: if there is a failure to land a module, that's all you lose

          2. Efficiency, different modules will require different locations, you'll want water so being near a water source is required, but the best location to mine for metals extra might be miles away from the nearest water source, so being able to land the different modules in their different ideal locations and not have to move them later is a huge efficiency boost


          So you could easily have an Ikea home flat packed with a descent module that would build the areas of housing, which would have the required modules positioned nearby, whereas the mining systems etc can be landed where those required materials are highest.



          Once all the habitation and systems modules are landed, what about the rest of the ship... well there is a lot of valuable materials on board that ship, so landing them allows them to be recovered. There's no benefit to leaving it in orbit as its orbit will eventually degrade and reenter the atmosphere possible onto the colony... not ideal... and maintaining orbit will be costly in terms of remaining resources left on board. and that colony will not leave the planet to venture further for another world for a serious amount of time, by which time the systems would likely have degraded to beyond usefulness.



          And don't forget that as you approach the planet you'll want to launch several satellites, for GPS, Weather and Communications.






          share|improve this answer












          This started as a comment on L.Dutchs answer



          Bizzarely i actually built a similar ship to what you are referring to in Kerbal Space Program a year or so ago... i wouldn't recommend doing this as i had about 8 fps when leaving Kerbin Orbit... it took awhile.



          You need to build you ship modularly with all the components you'd want to have on the landed colony. and then each module can be landed seperately, whether that be with parachutes and heat shields. You do this is for several reasons




          1. Redundency: if there is a failure to land a module, that's all you lose

          2. Efficiency, different modules will require different locations, you'll want water so being near a water source is required, but the best location to mine for metals extra might be miles away from the nearest water source, so being able to land the different modules in their different ideal locations and not have to move them later is a huge efficiency boost


          So you could easily have an Ikea home flat packed with a descent module that would build the areas of housing, which would have the required modules positioned nearby, whereas the mining systems etc can be landed where those required materials are highest.



          Once all the habitation and systems modules are landed, what about the rest of the ship... well there is a lot of valuable materials on board that ship, so landing them allows them to be recovered. There's no benefit to leaving it in orbit as its orbit will eventually degrade and reenter the atmosphere possible onto the colony... not ideal... and maintaining orbit will be costly in terms of remaining resources left on board. and that colony will not leave the planet to venture further for another world for a serious amount of time, by which time the systems would likely have degraded to beyond usefulness.



          And don't forget that as you approach the planet you'll want to launch several satellites, for GPS, Weather and Communications.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 days ago









          Blade WraithBlade Wraith

          7,85611240




          7,85611240












          • Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
            – Magus
            2 days ago










          • Yeah that is a fine idea.
            – Willk
            yesterday


















          • Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
            – Magus
            2 days ago










          • Yeah that is a fine idea.
            – Willk
            yesterday
















          Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
          – Magus
          2 days ago




          Your take on landing separate modules close to where they're truly needed is an awesome idea. Thanks for that.
          – Magus
          2 days ago












          Yeah that is a fine idea.
          – Willk
          yesterday




          Yeah that is a fine idea.
          – Willk
          yesterday











          1














          In theory, yes it can.
          But bringing such a giant ship in the athmosphere comes with some problems.



          First you have to keep it from breaking apart. Usually the descend comes with lots of vibrations which might break the ship apart.



          The next problem you might encounter is the giant heat shield such a big ship would need. (Also I don't know how much a descend like that would heat up the athmosphere)



          So you could disassemble the ship in orbit and land small parts of it (I guess that is the way such an undertaking would actually be done) or



          If your ship has plenty of fuel or whatever powersource it uses to power its engines and if the engines are strong enough, you could simply slow down the descend to a speed where the heating is no big deal. If you descend slow enough none of the problems would appear.



          Using the athmosphere as a break is only done to save fuel. If you have plenty, then you don't need to do that.






          share|improve this answer


























            1














            In theory, yes it can.
            But bringing such a giant ship in the athmosphere comes with some problems.



            First you have to keep it from breaking apart. Usually the descend comes with lots of vibrations which might break the ship apart.



            The next problem you might encounter is the giant heat shield such a big ship would need. (Also I don't know how much a descend like that would heat up the athmosphere)



            So you could disassemble the ship in orbit and land small parts of it (I guess that is the way such an undertaking would actually be done) or



            If your ship has plenty of fuel or whatever powersource it uses to power its engines and if the engines are strong enough, you could simply slow down the descend to a speed where the heating is no big deal. If you descend slow enough none of the problems would appear.



            Using the athmosphere as a break is only done to save fuel. If you have plenty, then you don't need to do that.






            share|improve this answer
























              1












              1








              1






              In theory, yes it can.
              But bringing such a giant ship in the athmosphere comes with some problems.



              First you have to keep it from breaking apart. Usually the descend comes with lots of vibrations which might break the ship apart.



              The next problem you might encounter is the giant heat shield such a big ship would need. (Also I don't know how much a descend like that would heat up the athmosphere)



              So you could disassemble the ship in orbit and land small parts of it (I guess that is the way such an undertaking would actually be done) or



              If your ship has plenty of fuel or whatever powersource it uses to power its engines and if the engines are strong enough, you could simply slow down the descend to a speed where the heating is no big deal. If you descend slow enough none of the problems would appear.



              Using the athmosphere as a break is only done to save fuel. If you have plenty, then you don't need to do that.






              share|improve this answer












              In theory, yes it can.
              But bringing such a giant ship in the athmosphere comes with some problems.



              First you have to keep it from breaking apart. Usually the descend comes with lots of vibrations which might break the ship apart.



              The next problem you might encounter is the giant heat shield such a big ship would need. (Also I don't know how much a descend like that would heat up the athmosphere)



              So you could disassemble the ship in orbit and land small parts of it (I guess that is the way such an undertaking would actually be done) or



              If your ship has plenty of fuel or whatever powersource it uses to power its engines and if the engines are strong enough, you could simply slow down the descend to a speed where the heating is no big deal. If you descend slow enough none of the problems would appear.



              Using the athmosphere as a break is only done to save fuel. If you have plenty, then you don't need to do that.







              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered 2 days ago









              elPolloLocoelPolloLoco

              76617




              76617























                  1














                  Space Elevator



                  As a riff on the why land at all, consider parking the colony ship in geosynchronous orbit. Have it stocked with a set of GPS, weather and communication satellites which get dispersed around the planet, as well as some limited high tech foundries and a space elevator.



                  The colony ship serves as a support station ferrying hard to produce parts down as well as maintaining orbital assets until the colony is able to provide for itself.



                  Most of the colonial equipment will just makes a one way trip down the elevator. The empty space in the ship can then be converted into a university/museum of life back on Earth.






                  share|improve this answer


























                    1














                    Space Elevator



                    As a riff on the why land at all, consider parking the colony ship in geosynchronous orbit. Have it stocked with a set of GPS, weather and communication satellites which get dispersed around the planet, as well as some limited high tech foundries and a space elevator.



                    The colony ship serves as a support station ferrying hard to produce parts down as well as maintaining orbital assets until the colony is able to provide for itself.



                    Most of the colonial equipment will just makes a one way trip down the elevator. The empty space in the ship can then be converted into a university/museum of life back on Earth.






                    share|improve this answer
























                      1












                      1








                      1






                      Space Elevator



                      As a riff on the why land at all, consider parking the colony ship in geosynchronous orbit. Have it stocked with a set of GPS, weather and communication satellites which get dispersed around the planet, as well as some limited high tech foundries and a space elevator.



                      The colony ship serves as a support station ferrying hard to produce parts down as well as maintaining orbital assets until the colony is able to provide for itself.



                      Most of the colonial equipment will just makes a one way trip down the elevator. The empty space in the ship can then be converted into a university/museum of life back on Earth.






                      share|improve this answer












                      Space Elevator



                      As a riff on the why land at all, consider parking the colony ship in geosynchronous orbit. Have it stocked with a set of GPS, weather and communication satellites which get dispersed around the planet, as well as some limited high tech foundries and a space elevator.



                      The colony ship serves as a support station ferrying hard to produce parts down as well as maintaining orbital assets until the colony is able to provide for itself.



                      Most of the colonial equipment will just makes a one way trip down the elevator. The empty space in the ship can then be converted into a university/museum of life back on Earth.







                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered yesterday









                      MongoTheGeekMongoTheGeek

                      51227




                      51227























                          1














                          Okay, I know that other people have already said that you want to bring down the ship in sections, but I'm going to provide another reason to do so:



                          It's much easier to land things that aren't the size of skyscrapers.



                          Square-Cube



                          Take a really long piece of wood, and hold it horizontal. You'll notice it bends very easily, especially if you shake it. Now scale down the piece of wood, keeping the aspect ratios the same, and try shaking it. It won't bend. If your structure is bigger, it is relatively weaker than something scaled down. Square-Cube law again. If you have a structural failure, then your ship is now...



                          Aerodynamic Instability



                          There's also the matter of aerodynamic instability, a.k.a please don't spin out and fly apart in a massive explosion at 7km/s. This is going to involve reconfiguring the ship so that its center of mass is directly in front of the center of pressure. Rather than disassembling the ship and then reassembling it to get aerodynamic stability, just disassemble it and send the pieces down one at a time. It's safer that way. No need to worry about a poor job rebuilding the ship.



                          Ground Pressure



                          Finally, skyscrapers have foundations. Your ship does not. There is no infrastructure on the planet to build a suitable landing site for a skyscraper. A space-shuttle-sized module will be light enough to not immediately sink into the ground and/or fall over when landing.






                          share|improve this answer


























                            1














                            Okay, I know that other people have already said that you want to bring down the ship in sections, but I'm going to provide another reason to do so:



                            It's much easier to land things that aren't the size of skyscrapers.



                            Square-Cube



                            Take a really long piece of wood, and hold it horizontal. You'll notice it bends very easily, especially if you shake it. Now scale down the piece of wood, keeping the aspect ratios the same, and try shaking it. It won't bend. If your structure is bigger, it is relatively weaker than something scaled down. Square-Cube law again. If you have a structural failure, then your ship is now...



                            Aerodynamic Instability



                            There's also the matter of aerodynamic instability, a.k.a please don't spin out and fly apart in a massive explosion at 7km/s. This is going to involve reconfiguring the ship so that its center of mass is directly in front of the center of pressure. Rather than disassembling the ship and then reassembling it to get aerodynamic stability, just disassemble it and send the pieces down one at a time. It's safer that way. No need to worry about a poor job rebuilding the ship.



                            Ground Pressure



                            Finally, skyscrapers have foundations. Your ship does not. There is no infrastructure on the planet to build a suitable landing site for a skyscraper. A space-shuttle-sized module will be light enough to not immediately sink into the ground and/or fall over when landing.






                            share|improve this answer
























                              1












                              1








                              1






                              Okay, I know that other people have already said that you want to bring down the ship in sections, but I'm going to provide another reason to do so:



                              It's much easier to land things that aren't the size of skyscrapers.



                              Square-Cube



                              Take a really long piece of wood, and hold it horizontal. You'll notice it bends very easily, especially if you shake it. Now scale down the piece of wood, keeping the aspect ratios the same, and try shaking it. It won't bend. If your structure is bigger, it is relatively weaker than something scaled down. Square-Cube law again. If you have a structural failure, then your ship is now...



                              Aerodynamic Instability



                              There's also the matter of aerodynamic instability, a.k.a please don't spin out and fly apart in a massive explosion at 7km/s. This is going to involve reconfiguring the ship so that its center of mass is directly in front of the center of pressure. Rather than disassembling the ship and then reassembling it to get aerodynamic stability, just disassemble it and send the pieces down one at a time. It's safer that way. No need to worry about a poor job rebuilding the ship.



                              Ground Pressure



                              Finally, skyscrapers have foundations. Your ship does not. There is no infrastructure on the planet to build a suitable landing site for a skyscraper. A space-shuttle-sized module will be light enough to not immediately sink into the ground and/or fall over when landing.






                              share|improve this answer












                              Okay, I know that other people have already said that you want to bring down the ship in sections, but I'm going to provide another reason to do so:



                              It's much easier to land things that aren't the size of skyscrapers.



                              Square-Cube



                              Take a really long piece of wood, and hold it horizontal. You'll notice it bends very easily, especially if you shake it. Now scale down the piece of wood, keeping the aspect ratios the same, and try shaking it. It won't bend. If your structure is bigger, it is relatively weaker than something scaled down. Square-Cube law again. If you have a structural failure, then your ship is now...



                              Aerodynamic Instability



                              There's also the matter of aerodynamic instability, a.k.a please don't spin out and fly apart in a massive explosion at 7km/s. This is going to involve reconfiguring the ship so that its center of mass is directly in front of the center of pressure. Rather than disassembling the ship and then reassembling it to get aerodynamic stability, just disassemble it and send the pieces down one at a time. It's safer that way. No need to worry about a poor job rebuilding the ship.



                              Ground Pressure



                              Finally, skyscrapers have foundations. Your ship does not. There is no infrastructure on the planet to build a suitable landing site for a skyscraper. A space-shuttle-sized module will be light enough to not immediately sink into the ground and/or fall over when landing.







                              share|improve this answer












                              share|improve this answer



                              share|improve this answer










                              answered yesterday









                              ltmauveltmauve

                              1,900512




                              1,900512























                                  0














                                  You usually do not want to land large ships because it takes very large amount of energy to get them back to space, but if your ship is designed as a one way vehicle that's then to be used as habitat and will never fly again, then landing is not a problem.



                                  There are a few things to consider though:




                                  1. To slow down a massive ship like that enough to do an orbit insertion, you'll need massive amounts of energy / propellan . Assuming your ship has traveled to another star, at I'm guessing some significant fraction of the speed of light, we can safely assume you can hand wave this away.


                                  2. You might want to look into using a skip-reentry (with multiple skips) instead of more traditional aerodynamic braking to reduce the high heating loads.



                                  https://en.wikipedia.org/wiki/Boost-glide






                                  share|improve this answer


























                                    0














                                    You usually do not want to land large ships because it takes very large amount of energy to get them back to space, but if your ship is designed as a one way vehicle that's then to be used as habitat and will never fly again, then landing is not a problem.



                                    There are a few things to consider though:




                                    1. To slow down a massive ship like that enough to do an orbit insertion, you'll need massive amounts of energy / propellan . Assuming your ship has traveled to another star, at I'm guessing some significant fraction of the speed of light, we can safely assume you can hand wave this away.


                                    2. You might want to look into using a skip-reentry (with multiple skips) instead of more traditional aerodynamic braking to reduce the high heating loads.



                                    https://en.wikipedia.org/wiki/Boost-glide






                                    share|improve this answer
























                                      0












                                      0








                                      0






                                      You usually do not want to land large ships because it takes very large amount of energy to get them back to space, but if your ship is designed as a one way vehicle that's then to be used as habitat and will never fly again, then landing is not a problem.



                                      There are a few things to consider though:




                                      1. To slow down a massive ship like that enough to do an orbit insertion, you'll need massive amounts of energy / propellan . Assuming your ship has traveled to another star, at I'm guessing some significant fraction of the speed of light, we can safely assume you can hand wave this away.


                                      2. You might want to look into using a skip-reentry (with multiple skips) instead of more traditional aerodynamic braking to reduce the high heating loads.



                                      https://en.wikipedia.org/wiki/Boost-glide






                                      share|improve this answer












                                      You usually do not want to land large ships because it takes very large amount of energy to get them back to space, but if your ship is designed as a one way vehicle that's then to be used as habitat and will never fly again, then landing is not a problem.



                                      There are a few things to consider though:




                                      1. To slow down a massive ship like that enough to do an orbit insertion, you'll need massive amounts of energy / propellan . Assuming your ship has traveled to another star, at I'm guessing some significant fraction of the speed of light, we can safely assume you can hand wave this away.


                                      2. You might want to look into using a skip-reentry (with multiple skips) instead of more traditional aerodynamic braking to reduce the high heating loads.



                                      https://en.wikipedia.org/wiki/Boost-glide







                                      share|improve this answer












                                      share|improve this answer



                                      share|improve this answer










                                      answered 2 days ago









                                      ventsyvventsyv

                                      3,300417




                                      3,300417























                                          -1














                                          Lay it down nice and slow.



                                          Your colony ship will settle down very gradually and by doing so will sidestep heating in the atmosphere and also stresses on the ship.



                                          It will not orbit, because orbit requires fast speeds that will then need to be shed as heat into the atmosphere. It will use its engines to counter the pull of gravity as it approaches from space, and ease its way into the atmosphere at subsonic speed.



                                          In addition, once in the atmosphere the ship will deploy colossal hydrogen floats, making it neutrally buoyant.



                                          https://en.wikipedia.org/wiki/Atmospheric_entry




                                          An alternative low velocity method of controlled atmospheric entry is
                                          buoyancy which is suitable for planetary entry where thick
                                          atmospheres, strong gravity, or both factors complicate high-velocity
                                          hyperbolic entry.




                                          Here the hugeness of the ship complicates high velocity hyperbolic entry. Buoyancy will be adjusted with controlled release of hydrogen. This will allow the ship to turn its engines off while high above the planet, and gradually settle down like a giant balloon coming to rest.



                                          This will minimize stresses on the ship, heating of the ship and the atmosphere, and impact on the ground below.



                                          I forgot to mention that klaxons will sound as the ship nears touchdown, so local wildlife can clear the area.






                                          share|improve this answer





















                                          • A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
                                            – Mark
                                            yesterday
















                                          -1














                                          Lay it down nice and slow.



                                          Your colony ship will settle down very gradually and by doing so will sidestep heating in the atmosphere and also stresses on the ship.



                                          It will not orbit, because orbit requires fast speeds that will then need to be shed as heat into the atmosphere. It will use its engines to counter the pull of gravity as it approaches from space, and ease its way into the atmosphere at subsonic speed.



                                          In addition, once in the atmosphere the ship will deploy colossal hydrogen floats, making it neutrally buoyant.



                                          https://en.wikipedia.org/wiki/Atmospheric_entry




                                          An alternative low velocity method of controlled atmospheric entry is
                                          buoyancy which is suitable for planetary entry where thick
                                          atmospheres, strong gravity, or both factors complicate high-velocity
                                          hyperbolic entry.




                                          Here the hugeness of the ship complicates high velocity hyperbolic entry. Buoyancy will be adjusted with controlled release of hydrogen. This will allow the ship to turn its engines off while high above the planet, and gradually settle down like a giant balloon coming to rest.



                                          This will minimize stresses on the ship, heating of the ship and the atmosphere, and impact on the ground below.



                                          I forgot to mention that klaxons will sound as the ship nears touchdown, so local wildlife can clear the area.






                                          share|improve this answer





















                                          • A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
                                            – Mark
                                            yesterday














                                          -1












                                          -1








                                          -1






                                          Lay it down nice and slow.



                                          Your colony ship will settle down very gradually and by doing so will sidestep heating in the atmosphere and also stresses on the ship.



                                          It will not orbit, because orbit requires fast speeds that will then need to be shed as heat into the atmosphere. It will use its engines to counter the pull of gravity as it approaches from space, and ease its way into the atmosphere at subsonic speed.



                                          In addition, once in the atmosphere the ship will deploy colossal hydrogen floats, making it neutrally buoyant.



                                          https://en.wikipedia.org/wiki/Atmospheric_entry




                                          An alternative low velocity method of controlled atmospheric entry is
                                          buoyancy which is suitable for planetary entry where thick
                                          atmospheres, strong gravity, or both factors complicate high-velocity
                                          hyperbolic entry.




                                          Here the hugeness of the ship complicates high velocity hyperbolic entry. Buoyancy will be adjusted with controlled release of hydrogen. This will allow the ship to turn its engines off while high above the planet, and gradually settle down like a giant balloon coming to rest.



                                          This will minimize stresses on the ship, heating of the ship and the atmosphere, and impact on the ground below.



                                          I forgot to mention that klaxons will sound as the ship nears touchdown, so local wildlife can clear the area.






                                          share|improve this answer












                                          Lay it down nice and slow.



                                          Your colony ship will settle down very gradually and by doing so will sidestep heating in the atmosphere and also stresses on the ship.



                                          It will not orbit, because orbit requires fast speeds that will then need to be shed as heat into the atmosphere. It will use its engines to counter the pull of gravity as it approaches from space, and ease its way into the atmosphere at subsonic speed.



                                          In addition, once in the atmosphere the ship will deploy colossal hydrogen floats, making it neutrally buoyant.



                                          https://en.wikipedia.org/wiki/Atmospheric_entry




                                          An alternative low velocity method of controlled atmospheric entry is
                                          buoyancy which is suitable for planetary entry where thick
                                          atmospheres, strong gravity, or both factors complicate high-velocity
                                          hyperbolic entry.




                                          Here the hugeness of the ship complicates high velocity hyperbolic entry. Buoyancy will be adjusted with controlled release of hydrogen. This will allow the ship to turn its engines off while high above the planet, and gradually settle down like a giant balloon coming to rest.



                                          This will minimize stresses on the ship, heating of the ship and the atmosphere, and impact on the ground below.



                                          I forgot to mention that klaxons will sound as the ship nears touchdown, so local wildlife can clear the area.







                                          share|improve this answer












                                          share|improve this answer



                                          share|improve this answer










                                          answered yesterday









                                          WillkWillk

                                          103k25197434




                                          103k25197434












                                          • A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
                                            – Mark
                                            yesterday


















                                          • A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
                                            – Mark
                                            yesterday
















                                          A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
                                          – Mark
                                          yesterday




                                          A powered descent of the sort you describe is Really Damn Inefficient (requiring tens to hundreds of times more fuel than a more conventional last-second burn), and balloons large enough to lift a starship are almost certain to get torn apart by the winds.
                                          – Mark
                                          yesterday


















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