Well, I’ve always asked myself why can’t we use some kind of train or catapult to help the rockets to save fuel or to go further. Can anyone explain me why?
In: Engineering
How fast can a train go while carrying a rocket? Idk but I bet it’s hella slow. Almost nothing compared to how much speed it needs to take off.
But, the idea is used.. kinda. That’s where multi-stage rockets come in. They basically use a rocket to launch another rocket. The space shuttle uses this idea. The tanks used for liftoff are let go and fall back to earth, which means it doesn’t have to carry around the extra weight after launch.
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