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Need idea about player spaceship landing on planets
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<blockquote data-quote="Thomas Bowman" data-source="post: 7529376" data-attributes="member: 6925649"><p>The main reason is just getting into orbit from an Earthlike planet's surface uses a tremendous amount of fuel, and the spaceship needs to accelerate at a rate greater than the pull of gravity to get above the atmosphere. A ship has to fight gravity on its way up and the fuel it uses to fight that gravity can't be used to accelerate to orbital velocity.</p><p></p><p>Once you are at orbital velocity however, it doesn't make sense to use high thrusts, it is more efficient to use a low thrust, high efficiency engine, you can achieve a higher velocity that way. This means you need one sort of vehicle to land on a planet's surface and take off again, and you need another sort of vehicle to fly through space once you have achieved orbit. If you have a spaceship which can do both, that means it does neither particularly well. You need a separate engine for flying through space, from the one you need to take off and land on a planet's surface, the engine needed for planetary excursions is dead weight when you are flying through space, and the engine you need to fly through space is dead weight when you are trying to take off from a planet's surface. So it kind of makes sense to have a larger ship that carries around a smaller planetary lander which separates and lands on a planet's surface, that way you don't need as big an engine to make those planetary landings, and you don't need to carry around as much fuel or tankage. The Apollo Moon architecture follows that principle, "lunar orbit rendezvous" saves on fuel and engines for making a lunar landing and takeoff and it allowed them to use a Saturn V rocket instead of the proposed Nova rocket for manned Moon missions.</p><p></p><p></p><p><img src="https://4.bp.blogspot.com/-livdD1GPDmM/VKldZazg3-I/AAAAAAAAbP4/9-wdDIdP4Go/s1600/C%2B8.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Thomas Bowman, post: 7529376, member: 6925649"] The main reason is just getting into orbit from an Earthlike planet's surface uses a tremendous amount of fuel, and the spaceship needs to accelerate at a rate greater than the pull of gravity to get above the atmosphere. A ship has to fight gravity on its way up and the fuel it uses to fight that gravity can't be used to accelerate to orbital velocity. Once you are at orbital velocity however, it doesn't make sense to use high thrusts, it is more efficient to use a low thrust, high efficiency engine, you can achieve a higher velocity that way. This means you need one sort of vehicle to land on a planet's surface and take off again, and you need another sort of vehicle to fly through space once you have achieved orbit. If you have a spaceship which can do both, that means it does neither particularly well. You need a separate engine for flying through space, from the one you need to take off and land on a planet's surface, the engine needed for planetary excursions is dead weight when you are flying through space, and the engine you need to fly through space is dead weight when you are trying to take off from a planet's surface. So it kind of makes sense to have a larger ship that carries around a smaller planetary lander which separates and lands on a planet's surface, that way you don't need as big an engine to make those planetary landings, and you don't need to carry around as much fuel or tankage. The Apollo Moon architecture follows that principle, "lunar orbit rendezvous" saves on fuel and engines for making a lunar landing and takeoff and it allowed them to use a Saturn V rocket instead of the proposed Nova rocket for manned Moon missions. [IMG]https://4.bp.blogspot.com/-livdD1GPDmM/VKldZazg3-I/AAAAAAAAbP4/9-wdDIdP4Go/s1600/C%2B8.jpg[/IMG] [/QUOTE]
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Need idea about player spaceship landing on planets
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