3 ms·

Parachutes also hit a lot harder. Powered landing you can touch down with ~0m/s. Parachutes you'd get something like 10 m/s (~22mph.) Not necessarily nice on yo

• fixermark 12y ago
  Not particularly nice on your astronauts / cosmonauts / 赵里昱 either, though they have training, preparation, and (according to an interview with Cmdr. Hadfield awhile ago) specially-poured per-backside crash seats to ameliorate it somewhat.
• Crito 12y ago
  Yup. The Soyuz landing capsule uses solid fuel retro-rockets at the very last second to slow down, but even then it is apparently a rather unpleasant bump.
  • tomswartz07 12y ago
    What's interesting here is the difference: Soyuz uses a 'suicide burn' that releases a ton of delta-V in a short amount of time. From the video, it seems that Falcon uses a progressive burn as it approaches. They also mention that they can restart it up to 3 times in atmosphere.
    • rspeed 12y ago
      The third burn here is also a suicide burn. The first one is to change its path and the second is to prevent it from falling too fast.