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Soyuz recently developed a 3 hour flight profile to ISS, instead of a 27 hour one. Maybe they'll revise the Dragon profile sometime. https://www.nasaspacefligh

Soyuz recently developed a 3 hour flight profile to ISS, instead of a 27 hour one. Maybe they'll revise the Dragon profile sometime. https://www.nasaspaceflight.com/2020/10/soyuz-ms17-ultrafast-journey-to-iss/ https://www.nasaspaceflight.com/2020/10/soyuz-ms17-ultrafast...

robbiet480 6y ago
My understanding is that if they had launched yesterday as originally planned it would’ve taken only 8 hours to get to ISS.
thamer 6y ago
Scott Manley posted a great video a few weeks ago explaining the differences between the ways SpaceX and Soyuz do their orbital insertion and rendez-vous with the ISS: https://www.youtube.com/watch?v=bUi0yWc5Dnw https://www.youtube.com/watch?v=bUi0yWc5Dnw
- gdy 6y ago
  It's a bit incorrect -- Soyuz is using Russian-made rendezvous system Kurs-NA since 2016. Ukrainian-made Kurs system is obsolete.
solaris00 6y ago
This was just answered in the coast phase broadcast: Including a break for sleep is also a large factor in this profile given the time of day of today's launch.
- m0zg 6y ago
  I can't imagine sleeping under these circumstances. I'd probably be pumped so full of adrenaline, I wouldn't be able to sleep for a week.
  - crazyjncsu 6y ago
    Ambien. Members of SEAL team 6 actually napped on the helicopter ride to take out Bin Laden: https://www.theatlantic.com/international/archive/2012/09/how-does-seal-team-6-get-sleep-lots-ambien/323764/ https://www.theatlantic.com/international/archive/2012/09/ho...
    - myrandomcomment 6y ago
      Humans are amazing in our ability to adapt to the new normal. I was of the same mind of how the heck could you do this, however my body learned when I was in the military to sleep whenever it could under circumstances that I would have never consider possible until it became the new normal. Years latter I had the pleasure of teaching my wife to sky dive. On the ride up to altitude I would close my eyes and nap she was a bundle of nervous energy. She said it freaked her out, I just smiled. The average humans ability to adapt is key to our success as a species. In the end, I did nothing special, I just adapted to survive.
skykooler 6y ago
That would depend on whether the Falcon 9 has enough delta-V to do a plane change maneuver like the Soyuz does. Otherwise, launch windows would be months apart.

robbiet480 6y ago

My understanding is that if they had launched yesterday as originally planned it would’ve taken only 8 hours to get to ISS.

thamer 6y ago

Scott Manley posted a great video a few weeks ago explaining the differences between the ways SpaceX and Soyuz do their orbital insertion and rendez-vous with the ISS: https://www.youtube.com/watch?v=bUi0yWc5Dnw https://www.youtube.com/watch?v=bUi0yWc5Dnw

gdy 6y ago
It's a bit incorrect -- Soyuz is using Russian-made rendezvous system Kurs-NA since 2016. Ukrainian-made Kurs system is obsolete.

solaris00 6y ago

This was just answered in the coast phase broadcast: Including a break for sleep is also a large factor in this profile given the time of day of today's launch.

m0zg 6y ago
I can't imagine sleeping under these circumstances. I'd probably be pumped so full of adrenaline, I wouldn't be able to sleep for a week.
- crazyjncsu 6y ago
  Ambien. Members of SEAL team 6 actually napped on the helicopter ride to take out Bin Laden: https://www.theatlantic.com/international/archive/2012/09/how-does-seal-team-6-get-sleep-lots-ambien/323764/ https://www.theatlantic.com/international/archive/2012/09/ho...
  - myrandomcomment 6y ago
    Humans are amazing in our ability to adapt to the new normal. I was of the same mind of how the heck could you do this, however my body learned when I was in the military to sleep whenever it could under circumstances that I would have never consider possible until it became the new normal. Years latter I had the pleasure of teaching my wife to sky dive. On the ride up to altitude I would close my eyes and nap she was a bundle of nervous energy. She said it freaked her out, I just smiled. The average humans ability to adapt is key to our success as a species. In the end, I did nothing special, I just adapted to survive.

skykooler 6y ago

That would depend on whether the Falcon 9 has enough delta-V to do a plane change maneuver like the Soyuz does. Otherwise, launch windows would be months apart.