New answers tagged


The ISS can be refueled with UDMH and N2O4 by visiting vehicles, initially the ATV: The propellant transfer is done through the docking connector, through pipes that run outside the pressurized portions of the ISS.


The difference in loading a flown booster and a brand new booster is the same. SpaceX starts loading RP1 and first stage LOX at T-35 min. RP1 fueling on the first stage finishes around the T-3 min and second stage around T-2 min time. For LOX fueling, they never really finish loading, they will keep topping off the LOX that's boiled off til about liftoff. So ...

Top 50 recent answers are included