Author Topic: SpaceX Dragon 2 Updates and Discussion - Thread 2  (Read 707155 times)

Offline envy887

  • Senior Member
  • *****
  • Posts: 7993
  • Liked: 6527
  • Likes Given: 2926
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1040 on: 02/07/2018 07:51 pm »
That was an interesting comment. But technically, it's actually up to SpaceX to decide how they land Dragon2. It's harder to certify something that hasn't been done before but it is possible. It might be a good idea to try this with cargo Dragon2.
I consider it vanishingly unlikely this'd happen.

The whole issue with 'try this with Cargo Dragon2' has been that it appears that they have no 'spare' missions to allow spacex to try wacky stuff on, as downmass turns out to be a problem due to the way the contracts shook out.
This means that in order for SpaceX to prove this, they'd likely have to do it on their own missions, and ...

Not necessarily, the problem with propulsive landing test is that for some reason it couldn't be done with the help of helicopters or cargo planes, it requires a real launch which makes it super expensive to even do one test.

Do we know this for a fact? Dragonfly did not involve any F9 launches.

https://en.wikipedia.org/wiki/DragonFly_(rocket)

Dragonfly was not an all-up propulsive landing test, just a hover test.

Offline Kansan52

  • Full Member
  • ****
  • Posts: 1456
  • Hutchinson, KS
  • Liked: 551
  • Likes Given: 537
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1041 on: 02/07/2018 09:28 pm »
Reading these comments brings to mind Dyna Soar and MOL (Manned Orbiting Lab) before things changed and they didn't happen.

D2 ground landings died because things changed.

Offline Ronsmytheiii

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 23387
  • Liked: 1846
  • Likes Given: 962
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1042 on: 02/10/2018 07:48 am »
Go searcher appears to have a Dragon 2 on its deck in this picture, I am guessing it will go out and test water recovery ops:

Quote
#SpaceX #DroneShip #OCISLY aerial view.

https://twitter.com/cygnusx112/status/962107947001303041

Offline WindnWar

  • Full Member
  • ****
  • Posts: 540
  • South Carolina
  • Liked: 308
  • Likes Given: 1634
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1043 on: 02/11/2018 01:24 pm »
It's possible that this question has been asked and answered before but is there anything preventing Dragon 2 from doing the rapid docking that is being done with Soyuz and Progress? I can see why it wouldn't make sense for cargo Dragon that berths as it would require them to begin getting ready for berthing ops before it even launches, but for docking this is less of an issue.


Offline speedevil

  • Senior Member
  • *****
  • Posts: 4406
  • Fife
  • Liked: 2761
  • Likes Given: 3369
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1044 on: 02/11/2018 01:41 pm »
It's possible that this question has been asked and answered before but is there anything preventing Dragon 2 from doing the rapid docking that is being done with Soyuz and Progress? I can see why it wouldn't make sense for cargo Dragon that berths as it would require them to begin getting ready for berthing ops before it even launches, but for docking this is less of an issue.

Nothing in principle requires anything more than launching a few minutes before docking, if ISS happens to be in the right place.

Certainly what is done with Soyuz could be done, with much, much more rapid approaches than Dragon 1.

(You usually can't launch several minutes before ISSs orbital plane is overhead and get there, because ISS is in the wrong place in that orbital plane of course).

Offline cscott

  • Senior Member
  • *****
  • Posts: 3469
  • Liked: 2865
  • Likes Given: 714
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1045 on: 02/11/2018 06:13 pm »
Dragon 1 could do these, too.  The thing is that it costs ISS propellant in order to set up the fast rendezvous, and the ISS operators don't spend that unless the payload is sentient.

Soyuz is the only craft doing fast rendezvous because it is the only craft carrying humans.

This has been discussed before.
« Last Edit: 02/11/2018 06:15 pm by cscott »

Offline Jim

  • Night Gator
  • Senior Member
  • *****
  • Posts: 35998
  • Cape Canaveral Spaceport
  • Liked: 18433
  • Likes Given: 397
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1046 on: 02/11/2018 06:16 pm »
It's possible that this question has been asked and answered before but is there anything preventing Dragon 2 from doing the rapid docking that is being done with Soyuz and Progress? I can see why it wouldn't make sense for cargo Dragon that berths as it would require them to begin getting ready for berthing ops before it even launches, but for docking this is less of an issue.



Also, there is no 24 hr recycle with it.

Offline woods170

  • IRAS fan
  • Senior Member
  • *****
  • Posts: 11330
  • IRAS fan
  • The Netherlands
  • Liked: 15004
  • Likes Given: 9204
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1047 on: 02/12/2018 06:52 am »
Go searcher appears to have a Dragon 2 on its deck in this picture, I am guessing it will go out and test water recovery ops:

Quote
#SpaceX #DroneShip #OCISLY aerial view.

https://twitter.com/cygnusx112/status/962107947001303041

From here: https://www.nasa.gov/specials/CCP2017/

Quote from: NASA
SpaceX, NASA and U.S. Air Force personnel completed full-scale joint recovery trainer exercises to prepare for and ensure crew safety in the unlikely event of a rescue scenario. A full-size model of the spacecraft was used during rescue training. The Rescue Trainer was lowered into the Indian River Lagoon near NASA's Kennedy Space Center so that Air Force pararescuers and others could learn techniques for quickly reaching the spacecraft and supporting the astronauts onboard. SpaceX followed up the rescue and recovery testing in the Atlantic Ocean with spacesuit-clad astronauts and personnel who will assist upon return to Earth. The company will continue these training exercises in 2018.

Online FutureSpaceTourist

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 27689
  • UK
    • Plan 28
  • Liked: 51457
  • Likes Given: 22074
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1048 on: 02/26/2018 05:54 pm »
Quote
TAKE A LOOK at the @SpaceX Dragon Capsule "wet drill" four miles out of Port Canaveral.

(Photos courtesy of Steve Falletti)

https://twitter.com/portcanaveral/status/968183572300431365

Offline Ronsmytheiii

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 23387
  • Liked: 1846
  • Likes Given: 962
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1049 on: 02/26/2018 06:07 pm »
Quote
TAKE A LOOK at the @SpaceX Dragon Capsule "wet drill" four miles out of Port Canaveral.

(Photos courtesy of Steve Falletti)

https://twitter.com/portcanaveral/status/968183572300431365

huh, notice the tarp covering the "box" when the capsule is close to port, but is removed as it goes out to sea.

"WHATS IN THE BOX!"

Offline Nomadd

  • Senior Member
  • *****
  • Posts: 8438
  • Highway Whatever
  • Liked: 57162
  • Likes Given: 1103
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1050 on: 02/26/2018 06:27 pm »
Quote
TAKE A LOOK at the @SpaceX Dragon Capsule "wet drill" four miles out of Port Canaveral.

(Photos courtesy of Steve Falletti)

https://twitter.com/portcanaveral/status/968183572300431365

huh, notice the tarp covering the "box" when the capsule is close to port, but is removed as it goes out to sea.

"WHATS IN THE BOX!"
Could be an HPU in case they don't want to run the main engines while they're recovering, or a generator/support unit for the Dragon.
Those who danced were thought to be quite insane by those who couldn't hear the music.

Offline Inoeth

Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1051 on: 02/26/2018 10:28 pm »
Now that FH has launched and we're seeing these latest pics of Dragon 2 water testing/drills, does anyone know when the Crew Access Arm will be attached at 39a? They need it done by August for DM 1, so I'd guess that they would complete it no later then late June to early July, tho the earlier they can complete it the better I would think- especially since they may need extra time to fix or modify something that isn't quite where they may want it...

Offline rory

Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1052 on: 02/26/2018 10:37 pm »
Now that FH has launched and we're seeing these latest pics of Dragon 2 water testing/drills, does anyone know when the Crew Access Arm will be attached at 39a? They need it done by August for DM 1, so I'd guess that they would complete it no later then late June to early July, tho the earlier they can complete it the better I would think- especially since they may need extra time to fix or modify something that isn't quite where they may want it...

Check out the latest 'FPIP', speculation is CAA installation is the driver of the LC-39A gap between now and May.

https://forum.nasaspaceflight.com/index.php?topic=43418.msg1792719#msg1792719

Offline cscott

  • Senior Member
  • *****
  • Posts: 3469
  • Liked: 2865
  • Likes Given: 714
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1053 on: 02/27/2018 12:06 am »
Piling speculation upon speculation, there may be some pad modifications needed for Block 5. Both those items could be done in the launch gap.

Offline Raul

  • Full Member
  • ***
  • Posts: 349
  • Ústí nad Orlicí, CZECH
  • Liked: 1159
  • Likes Given: 97
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1054 on: 02/27/2018 01:36 pm »
huh, notice the tarp covering the "box" when the capsule is close to port, but is removed as it goes out to sea.

"WHATS IN THE BOX!"
Crew exit passage ramp and covered post-landing room is my quess.

Go Searcher is going to the sea with Dragon2 test article again.

Offline jacqmans

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 21401
  • Houten, The Netherlands
  • Liked: 7842
  • Likes Given: 312
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1055 on: 03/14/2018 10:00 am »
On February 28, SpaceX completed a demonstration of their ability to recover the crew and capsule after a nominal water splashdown. This marks an important recovery milestone and joint test. The timeline requirement from splashdown to crew egress onboard the ship is one hour, and the recovery team demonstrated that they can accomplish this operation under worst-case conditions in under 45 minutes. Further improvements are planned to shorten the recovery time even more as the team works to build a process that is safe, repeatable, and efficient.

Photo Credit: SpaceX

Offline woods170

  • IRAS fan
  • Senior Member
  • *****
  • Posts: 11330
  • IRAS fan
  • The Netherlands
  • Liked: 15004
  • Likes Given: 9204
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1056 on: 03/14/2018 12:06 pm »
On February 28, SpaceX completed a demonstration of their ability to recover the crew and capsule after a nominal water splashdown. This marks an important recovery milestone and joint test. The timeline requirement from splashdown to crew egress onboard the ship is one hour, and the recovery team demonstrated that they can accomplish this operation under worst-case conditions in under 45 minutes. Further improvements are planned to shorten the recovery time even more as the team works to build a process that is safe, repeatable, and efficient.


This is one of the many areas where the prior experience with Cargo Dragon is very helpful. The recovery set up is basically identical to the one used for Cargo Dragon.

Offline IntoTheVoid

  • Full Member
  • ****
  • Posts: 422
  • USA
  • Liked: 420
  • Likes Given: 134
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1057 on: 03/14/2018 07:14 pm »
...crew egress onboard the ship...

Does this mean that under nominal conditions the hatch remains closed until the capsule is aboard ship, and then they step out onto the deck?

Offline obi-wan

  • Full Member
  • ***
  • Posts: 329
  • Liked: 691
  • Likes Given: 28
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1058 on: 03/15/2018 01:18 am »
huh, notice the tarp covering the "box" when the capsule is close to port, but is removed as it goes out to sea.

"WHATS IN THE BOX!"
Crew exit passage ramp and covered post-landing room is my quess.

Go Searcher is going to the sea with Dragon2 test article again.

Since they're probably testing crew rescue, I bet the "box" is a clean, climate-controlled place to get in and out of the suits. They probably ingress the spacecraft before the davit puts it in the water, then they practice crew egress. NASA has been doing the same thing with Orion off and on in the JSC Neutral Buoyancy Laboratory. That's my guess.

Offline woods170

  • IRAS fan
  • Senior Member
  • *****
  • Posts: 11330
  • IRAS fan
  • The Netherlands
  • Liked: 15004
  • Likes Given: 9204
Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #1059 on: 03/15/2018 06:21 am »
...crew egress onboard the ship...

Does this mean that under nominal conditions the hatch remains closed until the capsule is aboard ship, and then they step out onto the deck?

That is exactly what it means.

Tags:
 

Advertisement NovaTech
Advertisement SkyTale Software GmbH
Advertisement Northrop Grumman
Advertisement
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
0