I saw a really stupid post on Facebook talking about “how rockets don’t work.” Flat earther conspiracy nonsense. I started reading on all the points the post made and the only one I didn’t understand is how at 22 x the speed of sound a rocket does not really go over 3g’s of force.
My assumption is that as the rocket travels further from the earth the gravity influence also influences g’s on an accelerating object?
Please help me with this one.
Thank you
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The Space Shuttle’s three liquid fueled engines could be throttled, to some degree.
During Max-Q, the point with the most stresses on the vehicle, the Shuttle would throttle -down its engines to reduce stresses. Afterwards, they were:
*”Go for throttle-up.”*
As more fuel was burned, the vehicle became lighter & lighter. This meant increasing acceleration, unless the main engines were throttled down to keep G forces below 3.
On the Saturn V moon rockets, they would intentionally cut the middle engine, as neither the F-1 engines on the first stage, nor the J-2 engines on the second stage were throttleable.
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