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A comment on The tyranny of the rocket equation (2012). Parent comment

Re:The tyranny of the rocket equation (2012) by betwixthewires on Tuesday September 06, 2022 @04:42AM (#32734534)
I would assume (with good reason) that the amount of energy needed to generate a counter to the gravitational field would be the same as the amount of energy required in thrust to do the same thing.
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Re:The tyranny of the rocket equation (2012) by YesWeWill on Tuesday September 06, 2022 @05:52AM (#32734955)
Still, having a drive that doesn't need to push stuff out of its back would be very interesting, IMHO - even if it doesn't work out better energy-wise.
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