Further Details From Soyuz Mishap 190
fyc brings us some information from Universe Today about what happened to Soyuz TMA-11 when it re-entered the atmosphere late last week. Reports indicate that a failure of explosive bolts to separate the Soyuz modules delayed the re-entry and oriented the capsule so the hatch was taking most of the heat, rather than the heat shields. CNN reports that the crew was in 'severe danger.' They experienced forces of up to 8.2 gravities. NASA officials have voiced their approval of how Russia handled the crisis. They expect to rely heavily on Soyuz spacecraft once the shuttles are retired in 2010.
GAO Report (Score:5, Interesting)
We won't always be so lucky (Score:5, Interesting)
Re:We won't always be so lucky (Score:2, Interesting)
Russian hardware (Score:5, Interesting)
There's a moral that applies here... how does it go again? Something about not putting all your eggs in one basket, if I recall correctly...
Re:We won't always be so lucky (Score:4, Interesting)
I expect the attitude might change somewhat when China and India start putting people on the moon too. Then we'll find out whether the United States is in inevitable decline or whether there's some life left in the old empire.
Re:You are being held by a force of two gravities! (Score:5, Interesting)
Re:Russian hardware (Score:5, Interesting)
There's another way... (Score:4, Interesting)
Re:We won't always be so lucky (Score:3, Interesting)
And, yes. I think you actually might be able to discount Challenger, because the fundamental design "bug" that caused it to happen was fixed.
However, one of the chief "safety" features of Soyuz is the robustness of the basic capsule itself, which has allowed it to protect the crew, even in the event of the catastrophic failure of several of its systems (one of them exploded on the launchpad, and the crew survived). As long as the retro-rockets and parachutes are intact, a free-fall to earth is usually survivable.
The shuttle, on the other hand, does not have many favorable abort modes. If any part of the craft fails, the integrity of the entire craft is compromised, and the crew are almost certainly doomed. Had a challenger-type incident occurred during a Soyuz, it is likely that the crew would have survived. Similarly, the fact that the crew entered literally upside-down during this past mission demonstrates that a Columbia-type failure isn't all that likely either.
The Space Shuttle has literally millions of parts and components, the failure of any one of which can spell doom for the mission and crew. The Soyuz engineers were not nearly as optimistic regarding their own manufacturing and quality-control abilities, and made something that was idiot-proof.
Ironically, NASA's next-generation craft design [wikipedia.org] resembles the Soyuz more closely than anything else. The Russian [wikipedia.org] and ESA [wikipedia.org] designs all opted for something that most closely resembles a hybrid between a capsule design and shuttle design (but on a much smaller and less extravagant scale).
Re:Recent NASA announcement on ISS resupply (Score:3, Interesting)
http://www.hobbyspace.com/nucleus/index.php?itemid=5989&catid=49 [hobbyspace.com]
On the other hand, if Falcon 9/Dragon succeeds there will most likely arise overwhelming pressure to kill Ares I/Orion to save billions dollars in further development and operational costs. (NASA could alter its lunar exploration architecture to use the Dragon instead of Orion, e.g. see this powerful option [blogspot.com].) Jeff Foust and Rand Simberg comment on recent statements from Mike Griffin as he tries to deal with this situation:
[Update: Jon Goff also discusses the gap and COTS issues: Gap Math - Selenian Boondocks - Apr.8.08 [blogspot.com].]
Re:Russian hardware (Score:5, Interesting)
By "electronics would get them killed" do you mean in combat?
My brother is a MiG-29 (and Su-27) pilot. (He has also flown F-16s on a USAF detachment.) On a landing approach in the MiG-29, he hit a truck that was parked a little too close to the runway. They had to replace the wheels and tires but otherwise the aircraft was fine. The truck was totalled.
Re:GAO Report (Score:3, Interesting)