Author Topic: SpaceX Dragon Specs  (Read 54139 times)

Offline ChefPat

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Re: SpaceX Dragon Specs
« Reply #80 on: 07/18/2010 03:11 pm »
"Dragon is capable of re-entering from a lunar velocity, or even a Mars velocity with the heat shield that it has," Musk said.

Reading this carefully, Musk does not say that a current Dragon is capable of re-entering at a Mars-return velocity.  He says that the PICA-X heat shield would not need to be changed for the Dragon to do so.  He makes no statement about what other changes would be required.
How hard would it be to fabricate a PICA-X shield in microgravity?
 Since we're limited in the size of what can be sent up by the size of the available farings can a heat shield for something the size of a BA-330 be completed with raw materiels after it's aleady up on orbit?
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Offline kkattula

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Re: SpaceX Dragon Specs
« Reply #81 on: 07/18/2010 04:58 pm »
"Dragon is capable of re-entering from a lunar velocity, or even a Mars velocity with the heat shield that it has," Musk said.

Reading this carefully, Musk does not say that a current Dragon is capable of re-entering at a Mars-return velocity.  He says that the PICA-X heat shield would not need to be changed for the Dragon to do so.  He makes no statement about what other changes would be required.
How hard would it be to fabricate a PICA-X shield in microgravity?
 Since we're limited in the size of what can be sent up by the size of the available farings can a heat shield for something the size of a BA-330 be completed with raw materiels after it's aleady up on orbit?

Far easier to send up small heat shield segments and assemble them in orbit.

Check out the Mars Drive idea for a circular heat shield that folds in half.  That gives you 19m+ diameter shield in a 10m fairing, for only a few hours of orbital assembly.

http://www.marsdrive.com/Libraries/Downloads/A_Proposal_for_a_Practical_Heavy_Mars_Lander.sflb.ashx
« Last Edit: 07/18/2010 05:05 pm by kkattula »

Offline docmordrid

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Re: SpaceX Dragon Specs
« Reply #82 on: 07/20/2010 04:39 pm »
There is a really high resolution version of this image on the new DragonLab brochure .  Of course, more details just leads to more questions, trying to tease information out of it:
>
4) From where do the parachutes (redundant drogue and main) and floats come?
>

Airborne Systems - their Ringsail system - was announced in May, 2007 and a poster @ NASAWatch says drop tests started later that year;

Link (PDF).....

http://nasawatch.com/archives/2010/03/orion-under-sie.html#comment-29631




« Last Edit: 07/20/2010 04:50 pm by docmordrid »
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Offline JohnFornaro

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Re: SpaceX Dragon Specs
« Reply #83 on: 07/20/2010 06:51 pm »
Like I said, it is reality setting in.  Spacex is finding out that space launch costs more and rockets carry less.

Yeah, but it's a pretty good reality.  Is it still cheap at twice the price?
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Offline go4mars

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Re: SpaceX Dragon Specs
« Reply #84 on: 03/16/2012 04:06 pm »
You will be sorry that you brought up the dragon crew seats etc.
Why?

IMHO, one look told me the Dragon design should pull two of the seats and rework it for 5 users.
Why?
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Offline Robotbeat

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Re: SpaceX Dragon Specs
« Reply #85 on: 03/16/2012 04:16 pm »
You will be sorry that you brought up the dragon crew seats etc.
Why?

IMHO, one look told me the Dragon design should pull two of the seats and rework it for 5 users.
Why?
Anti-SpaceX bias?

Dragon has a lot more per-astronaut usable volume than the Soyuz reentry module does.
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

To the maximum extent practicable, the Federal Government shall plan missions to accommodate the space transportation services capabilities of United States commercial providers. US law http://goo.gl/YZYNt0

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