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#1081
yes, fuel was calculated to a 10 min flight up to 10 km height, a steered glide and then reignition for touchdown. The fuel was liquid methane/oxygen so really there was not much left to 'burn'. What bust the rocket was the fall, not the 'bang'. Also you may have seen oxygen being vented when still high up. I think what they did was, when at apogee, they pumped the fuel into a different tank for descent, and what was left was vented.