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seriously, though... how long can the shuttle stay docked before it starts to stress the ISS? If it's years, then all is not lost. You can keep it up there, gut the inside and turn it into zero-g basketball courts. Put solar panels where the heat tiles are (can we get those to stay on, huh?) and it'll have a source of power for itself.
I'm only half kidding here, actually. NASA needs to see this as an opportunity, not a reason to commit hari-kari. It would, of course, totally suck if the shuttle were stuck attached to the ISS, unable to return. But on the other hand, we paid for that payload up there. I see no reason in dragging it back down to earth. There must be *something* we can do with it John |
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At night the stars put on a show for free (Carole King) One Earth, One Sky - IYA 2009 All moderation in purple |
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"Grounded", with one of the shuttles still up in the sky!
![]() There's something in that which seems crazy!
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HOUSTON: Roger, Tranquility. Be advised there's lots of smiling faces in this room, and all over the world. TRANQUILITY: There are two of them up here. COLUMBIA: And don't forget one in the command module. --From the Apollo 11 transcripts |
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There will be inspections to see if Discovery's forward landing gear hatch is damaged, NASA has seen damaged tiles and go on to do good missions before but there are some tiles that Shuttle really can't afford to lose though. On the mission of the STS-107, there was David M Brown, Kalpana Chawla, William C McCool, Rick D Husband, Laurel Clark, Michael P Anderson, and a foreigner Ilan Ramon from Israel and at re-entry the damaged wing overheated leading to total disintegration of the vehicle.
There are two foreigners on this current Shuttle flight Japanese astronaut Soichi Noguchi and Andy Thomas an Adelaide, Australian. Perhaps this piece of foam that broke off is causing NASA to look at how similar things are to the last events, NASA may get lucky and it not be a problem if the damage is minor and this time we know about the incident, so there is the posibility of doing a repair or as Aldrin has always said using the ISS as a safe zone. |
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Russian cosmonaut Sergei Krikalev and US astronaut John Phillips took digital pictures through 400mm and 800mm lenses from the station's Zvezda service module. http://www.ljplus.ru/img2/p/l/pleset...50728_1418.jpg Shuttle photo near ISS http://www.ljplus.ru/img2/p/l/pleset...50728_1421.jpg It was a suitcase-sized piece of foam that fell off Columbia during its launch and punched a hole in the wing. During its final approach the orbiter performed a backflip so the station crew could check its heatshield for damage and Discovery's belly tiles were imaged by cameras on the Space Station (ISS) as it moved into dock. |
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__________________
HOUSTON: Roger, Tranquility. Be advised there's lots of smiling faces in this room, and all over the world. TRANQUILITY: There are two of them up here. COLUMBIA: And don't forget one in the command module. --From the Apollo 11 transcripts |
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All this was--was the equivalent of a 16 year old driver who survived a head-on getting back behind the wheel and being super jumpy at every little noise or squeak--and then having someone pull right in front of her and miss. No harm done--but you wet your pants anyway. It just takes time. Though if they nixed the orbiter and ISS and used all that funding on the immediate construction of an SDV/HLLV--more power to them. Then we can have monolithic Skylab type stations like we should have had all along. |
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NASA says the protruding material could cause dangerous overheating during re-entry and lead to another Columbia-type disaster. The arm will be operated by astronauts inside the station, who will bend and wrap Robinson around so he can reach the shuttle's belly. Once there, he'll tug out the ceramic-fabric filler with his gloved hands. If that doesn't work, he'll cut away the material, which is sticking out about an inch from two spots near Discovery's nose. NASA experts are worried that the shuttle could overheat because of instability that the gap fillers, dangling from between thermal tiles on the underside of the shuttle, could cause.
http://www.napacomfort.com/mars/nasa_feed.html http://spaceflightnow.com/shuttle/st...ts114plan.html shuttlle pic http://www40.ksc.nasa.gov/shuttle/co...chan2large.jpg NASA will be sending a spacewalker beneath the craft to repair filler sticking out from ship's thermal tile belly and carry out some EVA work. Soichi just said "I have considered coming home on the Russian Spacecraft (Soyuz)" when asked about the severity of the TPS damage. Collins butts in and says "She expects everything to be fine." NASA engineers have spent the past three days "working very hard" to assess the risk from the gap fillers, which are only about an inch (2.5 centimetres) long. He said the teams had "put together a very simple plan with good safety precautions and mitigations of any hazards that will allow a crewmember to go out and remove those two gap fillers." |
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Part of the problem is that this is the most closely scrutinized shuttle ever. Things they didn't even know about on previous missions are becoming causes of concern on this one, like the gap fillers. For all we know there might have been extended gap fillers on every mission prior to this one, but this one was the only one inspected closely enough to find them.
I think that trying the space walk to fix them is a good idea, in any case. Someday they might really need to do this, so this will be a good rehearsal.
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Everything I need to know I learned through Googling. |
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The filler is a ceramic material that fills gaps between tiles. Removing it is not expected to pose any problems at all.
The only problem with it protruding is that it can disrupt the air flow over the surface during reentry, leading to local hot spots. It has occurred before; the temperature rose from 2300 to an estimated 2800 degrees in a small area. (Sorry, I don't know which orbiter/mission this occurred on.) |
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NASA delivers findings on shuttle foam flaws
http://www.msnbc.msn.com/id/9698599/ Inadequate methods of applying and repairing foam on the space shuttle’s fuel tank probably contributed to the dangerous loss of a chunk of the insulation during Discovery’s launch two and a half months ago, a NASA investigation team concluded Friday. |
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