Lubie Muska coraz bardziej, ktoś jego pokroju powinien zarządzać NASA
Po tej jego wypowiedzi należy go polubić jeszcze bardzej (albo zamknąć do czubków):
"My view on reusability is...
The first stage has to basicly turn around, relight its engines, boost back to the launch pad, and land propulsively. Thats tricky, but its very doable.And then the second stage, the second stage is harder, because with the second stage you are pound for pound stradeoff on payload. So any mass that you add, in terms of heat shield or re-entry systems, its directly substracted from the amound you can put into orbit.
Whereas the first stage is anywhere from a 5:1 to 10:1 ratio. So you get 10 pounds, and it only takes away 1 pound of payload.
And there is also a lot more you have to do with the second stage, you have to have a much more significant heat shield, you have to de-orbit the stage, control it during re-entry, it's gonna have some lift-over-drag, so you can steer it back to the launch site. And then you got to either propulsively land or perhaps using a parafoil or something like that. All those things cost mass.
Thats kinda of how I think it can and should be done. That basic architecture is what we are going to try to do. The trick is to do it just very mass efficiently. Because you've only got that 3 maybe 3.5 percent of mass to play with. You wanna try to get at least two percent of your liftoff mass to orbit, so that only leaves 1.5 percent for everything else, so not much."