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  [Discuss] SpaceX's Crew Dragon spacecraft (Page 2)

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Author Topic:   [Discuss] SpaceX's Crew Dragon spacecraft
Robert Pearlman
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Posts: 38366
From: Houston, TX
Registered: Nov 1999

posted 03-29-2017 01:58 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
NASA photo release (Credit: SpaceX)
Astronaut Bob Behnken emerges from a SpaceX Crew Dragon spacecraft in manufacturing at SpaceX's headquarters and factory in Hawthorne, California.

Robert Pearlman
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From: Houston, TX
Registered: Nov 1999

posted 07-19-2017 05:26 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Elon Musk, speaking today (July 19) at the International Space Station Research and Development conference in Washington, D.C., confirmed that SpaceX has canceled plans to propulsively land the Dragon 2 spacecraft.
That was a tough decision. The reason we decided not to pursue that heavily is that it would have taken a tremendous amount of effort to qualify that for safety for crew transport.
Crews returning from the International Space Station on Dragon will be recovered after a parachute-assisted ocean splashdown.

Aeropix
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From: Houston
Registered: Apr 2010

posted 07-20-2017 12:32 PM     Click Here to See the Profile for Aeropix   Click Here to Email Aeropix     Edit/Delete Message   Reply w/Quote
That's disappointing, though I am sure Mr. Musk will not give up on the vision of propulsive landings.

Maybe he can certify it for later flights? Or do a parachute assisted land-return like the Russians have been doing for 60 years? Certainly that should not be a huge engineering hurdle given SpaceX vision and drive to accomplish new things.

Hopefully we still can see something new and exciting for the American return to manned launches as the program matures. I guess it takes a lot of effort to tidy up the last details now they are in the home stretch.

What's the latest estimate for the first crew launch?

SkyMan1958
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posted 07-20-2017 12:50 PM     Click Here to See the Profile for SkyMan1958   Click Here to Email SkyMan1958     Edit/Delete Message   Reply w/Quote
One major issue I see cropping up is what happens if there is an emergency?

The Mercury, Gemini and Apollo capsules were aided in their pickup by having the world's largest Navy essentially at their beck and call. For the Soviets/Russians, having the capsule land on land at least meant the crew was relatively safe once they landed, even if they have to land in the Amazon.

With the Dragon 2, if they don't land off of Southern California, where are the other pickup ships if the crew has to land in the middle of the Indian Ocean etc.?

Robert Pearlman
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Posts: 38366
From: Houston, TX
Registered: Nov 1999

posted 07-20-2017 01:52 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Aeropix:
...give up on the vision of propulsive landings.
SpaceX still has plans for propulsive landings, but not with Dragon.
quote:
What's the latest estimate for the first crew launch?
Musk said yesterday he felt they were still on track to launch next year.

Robert Pearlman
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Posts: 38366
From: Houston, TX
Registered: Nov 1999

posted 07-20-2017 01:54 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by SkyMan1958:
...where are the other pickup ships if the crew has to land in the middle of the Indian Ocean etc.?
As with Orion, there will not be contingency ships staged for recovery; in the case of an unexpected off-course landing the crew will need to wait for ships to arrive.

Robert Pearlman
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From: Houston, TX
Registered: Nov 1999

posted 07-21-2017 09:30 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Robert Pearlman:
...on track to launch next year.
Further to this, NASA yesterday (July 20) posted the following targeted test dates:
  • SpaceX Demonstration Mission 1: February 2018
  • SpaceX Demonstration Mission 2 (crewed): June 2018

Robert Pearlman
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From: Houston, TX
Registered: Nov 1999

posted 07-21-2017 09:36 AM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Further to the discussion about Dragon 2 recovery, from NASA:
SpaceX, NASA and Air Force personnel who will help astronauts out of the SpaceX Crew Dragon spacecraft returning from a mission to the International Space Station have begun practicing for that using a full-size model of the spacecraft.

In certain unusual recovery situations, SpaceX may need to work with the U.S. Air Force to send parajumpers to recover astronauts from the capsule in the water. Recently, the Recovery Trainer was lowered into the Indian River Lagoon near NASA's Kennedy Space Center so Air Force pararescue and others could learn techniques for getting aboard the spacecraft and rescuing the astronauts.

...the Recovery Trainer was built by SpaceX and subsequently modified by Kennedy’s Prototype Lab to SpaceX specifications. The same dimensions as the outside mold line of a Crew Dragon, it has indicators where thrusters will be and other markings on the exterior. Inside, the crew area matches that of the operational spacecraft and includes an instrument panel.

Robert Pearlman
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Posts: 38366
From: Houston, TX
Registered: Nov 1999

posted 11-29-2017 06:32 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Per the schedule shared at a NASA Advisory Council on Wednesday (Nov. 29):
  • April 2018: Flight to ISS without crew (Demo Mission 1)
  • August 2018: Flight to ISS with crew (Demo Mission 2)


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