Questions tagged [efficiency]
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3 questions with no upvoted or accepted answers
What rocket uses the largest percentage of Fuel/Oxidizer before liftoff?
inspired by this question: How much propellant is used up until liftoff? which asks how much propellant (fuel/oxidizer) a typical rocket uses before liftoff. What has been or is the most non-typical ...
Is using a variable Isp (constant power & acceleration) more efficient than a constant Isp when launching?
So after I wrote a particularly poorly received answer about variable specific impulse, based on discussion I read here, I realise I may have misinterpreted what was being discussed in that thread. ...
Orbit to Orbit Transport Stage
Would it be faster or cheaper to have a lander, SSTO, and/or SpaceX Mars rocket to rendezvous connect with a more efficient engine or "transport stage" or another lander, SSTO? When the spacecraft ...