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 rocket that uses a large percentage of propellant before liftoff? For clarity I am looking for the largest delta in rocket mass between finishing fueling and liftoff

  • 2
    $\begingroup$ The clear answer is a RUD mission. Great advances have been made in the propellant use before liftoff on this front. $\endgroup$
    – Cort Ammon
    Mar 28, 2019 at 18:54
  • 1
    $\begingroup$ My guess is Falcon Heavy which started ignition at around T-7s and didn't seem to lift off until T+1s. $\endgroup$ Mar 19, 2020 at 20:58


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.