/sci/ - Science & Math

>>11586668
>>11586895
>>11587000
The case that can be ejected by the rocket is incredibly low when compared to the mass of the rocket. Additionally most of it is used to exit the atmosphere.
As you go higher up in the atmosphere it gets thinner and thinner making the thrust force less effective which is why rocket scientists don't exclusively use gas but try to play around with gravity and orbits as well to exit the atmosphere.
But I do agree with >>11577713 that they could just be using the ejected gas as a sort of atmosphere to push off of.