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Physics
Classical Physics
Mechanics
Is it more efficient to eject burnt fuel as reaction mass in rockets?
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[QUOTE="jbriggs444, post: 5451403, member: 422467"] If you burn fuel but do not eject that fuel as reaction mass, you end up carrying dead weight. That hurts efficiency. If you eject unburnt fuel as reaction mass, you end up wasting energy. That hurts efficiency. The obvious choice is to eject burnt fuel as your reaction mass. Which is what most rockets do. It also pays dividends to use a fuel with a high energy/mass ratio, of course. [Better to burn liquid hydrogen and liquid oxygen rather than shooting lead pellets powered by stretched rubber bands]. [/QUOTE]
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Forums
Physics
Classical Physics
Mechanics
Is it more efficient to eject burnt fuel as reaction mass in rockets?
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