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After more than two years, and less than a month from scheduled launch,
NASA decides to pull the shuttle off the launch pad, transport it back to the vehicle assembly building, and install a HEATER? This took two years to figure out? I swear, Gene Kranz must shake his head in disbelief at what has become of our space program. Can anyone imagine NASA going to the moon with this kind of hand-wringing, risk averse management? Here is the full article: ************************************************** ************** NASA Delays Post-Columbia Flight Again By MARCIA DUNN, AP Aerospace Writer NASA on Friday delayed by another two months the first space shuttle flight since the Columbia disaster, saying it needs more time to ensure that the fuel tank does not shed dangerous pieces of ice at liftoff. Discovery is now scheduled for launch no earlier than July 13. The flight had been targeted for late May. A large chunk of foam insulation from the external fuel tank punched a hole in Columbia's wing that led to the shuttle and crew's demise during re-entry in February 2003. Now, the lingering concern involves the possible buildup of ice on the tank once it's filled with super-cold fuel, and the hazard such shards would pose if they came off during the launch and hit the shuttle. NASA's new administrator, Michael Griffin, announced the delay at a midmorning televised news conference, saying it was the result of recent launch-debris reviews. "This is consistent with our overall approach to return to flight, which is that we're going to return to flight. We are not going to rush to flight, and we want it to be right, so we're doing what we need to do to ensure that," Griffin said. Extra repairs to Discovery's fuel tank will be needed, namely the addition of a heater, said NASA's top spaceflight official, Bill Readdy. The work means that NASA will have to remove Discovery from the launch pad and return it to the massive Vehicle Assembly Building. The prime area of concern is a 17-inch-diameter liquid oxygen line that runs 70 feet down the lower half of the 154-foot tank. Its expansion joints have produced ice in the past. After the Columbia accident, NASA devised a foam skirt, or so-called drip lip, to wick moisture away from the joints. Engineers believe it would reduce ice formation by 50 percent. Shuttle managers decided a more comprehensive repair was needed. Technicians will install a heater at the uppermost joint, something already planned for flights beyond Discovery's. To add the heater on Discovery, the shuttle will have to be hauled back to its hangar, which will add days if not weeks to launch preparations. NASA is also concerned about possible ice formation on the brackets that hold the oxygen line to the tank. The shuttle team is dealing with a few other unrelated problems with Discovery, involving balky engine-cutoff sensors in the fuel tank and thermal blankets contaminated recently with hydraulic fluid. Readdy said the extra two months will provide time to resolve all of these issues, and they will be tackled first while the shuttle is still at the launch pad. Another fueling test of Discovery's tank may be necessary, Readdy said. The test a month ago ago uncovered the intermittent sensor trouble and a few other problems. Griffin said he accepted shuttle managers' recommendation to postpone the flight, to perform the extra work. "I want to launch as soon as we can," said Griffin, who took over the top NASA job just two weeks ago. But he added that he wants the launch to be safe. "Schedule matters," he said. "It shouldn't matter to the point of causing people to do dumb things or to take ill-advised actions ... We want to launch Discovery when we can because the completion of the international space station depends upon an expeditious launch schedule. We don't want to launch it sooner than we can." Columbia was brought down on Feb. 1, 2003, by a gash in the left wing that was caused by a suitcase-size piece of foam that broke off the tank during liftoff. All seven astronauts were killed 16 days later during re-entry. NASA wants the first two post-Columbia launches held in daylight to ensure good photography of the shuttle and its fuel tank, which has been modified to prevent big pieces of foam insulation from coming off. Daylight also is needed over the North Atlantic in order to capture good photos of the fuel tank as it drops off eight minutes after liftoff. The July window extends from July 13 until July 31. If Discovery does not fly in July, the next opportunity would come in September. The 12-day mission will supply much-needed supplies and replacement parts to the space station. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
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On 29 Apr 2005 09:57:14 -0700, "Jay Honeck" wrote
in .com:: After more than two years, and less than a month from scheduled launch, NASA decides to pull the shuttle off the launch pad, transport it back to the vehicle assembly building, and install a HEATER? It sounds like NASA is being laudably prudent. But why these modifications weren't performed before rolling the shuttle to the launch pad is curious. The article mentions: NASA's new administrator, Michael Griffin, announced the delay at a midmorning televised news conference, saying it was the result of recent launch-debris reviews. .... Another fueling test of Discovery's tank may be necessary, Readdy said. The test a month ago uncovered the intermittent sensor trouble and a few other problems. Griffin said he accepted shuttle managers' recommendation to postpone the flight, to perform the extra work. "I want to launch as soon as we can," said Griffin, who took over the top NASA job just two weeks ago. But he added that he wants the launch to be safe. So it looks like the new administrator is a prudent professional. How can that be bad? The real question is, who made the decision to move the shuttle to the launch pad knowing that had "intermittent sensor trouble and a few other problems"? Griffin sounds like just what NASA needs, and I'll bet the crew would agree. |
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![]() "Larry Dighera" wrote in message ... On 29 Apr 2005 09:57:14 -0700, "Jay Honeck" wrote in .com:: After more than two years, and less than a month from scheduled launch, NASA decides to pull the shuttle off the launch pad, transport it back to the vehicle assembly building, and install a HEATER? It sounds like NASA is being laudably prudent. But why these modifications weren't performed before rolling the shuttle to the launch pad is curious. The article mentions: NASA's new administrator, Michael Griffin, announced the delay at a midmorning televised news conference, saying it was the result of recent launch-debris reviews. .... Another fueling test of Discovery's tank may be necessary, Readdy said. The test a month ago uncovered the intermittent sensor trouble and a few other problems. Griffin said he accepted shuttle managers' recommendation to postpone the flight, to perform the extra work. "I want to launch as soon as we can," said Griffin, who took over the top NASA job just two weeks ago. But he added that he wants the launch to be safe. So it looks like the new administrator is a prudent professional. How can that be bad? The real question is, who made the decision to move the shuttle to the launch pad knowing that had "intermittent sensor trouble and a few other problems"? Griffin sounds like just what NASA needs, and I'll bet the crew would agree. Griffin is a bean counter and it shows. NASA has tremendous internal problems which Griffin needs to fix before the organization can begin to be anything approaching effective. |
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On Sat, 30 Apr 2005 04:07:05 GMT, "Dave Stadt"
wrote in : : Griffin sounds like just what NASA needs, and I'll bet the crew would agree. Griffin is a bean counter and it shows. NASA has tremendous internal problems which Griffin needs to fix before the organization can begin to be anything approaching effective. That seems like a reasonable assessment given what's happened here. At least Griffin is considering fixing the Hubble telescope. He sounds like he's trying to do the right thing. |
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Larry Dighera wrote:
At least Griffin is considering fixing the Hubble telescope. He sounds like he's trying to do the right thing. Although I'm a fan of Hubble, it's hard to tell whether fixing it is worth it, since a replacement telescope is presently being built (James Webb Space Telescope) which is expected to significantly out perform Hubble. I think it's really just a matter of a few years where Hubble might fail and James Webb isn't up yet. -- __!__ Jay and Teresa Masino ___(_)___ http://www2.ari.net/jmasino ! ! ! http://www.oceancityairport.com http://www.oc-adolfos.com |
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Dave Stadt wrote:
Griffin is a bean counter and it shows. NASA has tremendous internal problems which Griffin needs to fix before the organization can begin to be anything approaching effective. The main problem NASA's facing is that funding for all of our existing projects (especially Earth science), most of which are providing a lot of good science, is being funneled away into Bush's big waste of time/money... moving towards putting men back onto the Moon and eventually Mars. I know a lot of you really want to see people on the Moon/Mars, but the benefit vs. cost just isn't there. We're better off continuing low cost use of robotic exploration. -- __!__ Jay and Teresa Masino ___(_)___ http://www2.ari.net/jmasino ! ! ! http://www.oceancityairport.com http://www.oc-adolfos.com |
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Mike Beede wrote:
I heard a couple of the Mars Rover drivers talk at a conference a couple weeks ago. Someone asked them if manned exploration made any sense vs. the Rovers. They both agreed that a human would be greatly more capable than a robot. Sure, but is it worth the money or the risk? -- __!__ Jay and Teresa Masino ___(_)___ http://www2.ari.net/jmasino ! ! ! http://www.oceancityairport.com http://www.oc-adolfos.com |
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Ok.. so let me get this straight.. The shuttle didn't pass "preflight",
so the flight is being delayed for safety reasons and modify or update the equipment just a little bit more.. Sure sounds a lot like you are miffed because they are trying real hard to avoid a case of "get there-itis". So what if its been 2 years.. the last time it was over 4, wasnt it? And the first one was a case of "I TOLD YOU SO" regarding the o-rings on the SRB's..Theres nothing wrong with wanting to get it right.. Astronauts and engineers are professionals, not daredevils with a death wish. I would applaud the setback. Just like I would look another pilot in the eye and say "Good Call" for scrubbing for equipment or weather issues. Dave Jay Honeck wrote: After more than two years, and less than a month from scheduled launch, NASA decides to pull the shuttle off the launch pad, transport it back to the vehicle assembly building, and install a HEATER? This took two years to figure out? I swear, Gene Kranz must shake his head in disbelief at what has become of our space program. Can anyone imagine NASA going to the moon with this kind of hand-wringing, risk averse management? Here is the full article: ************************************************** ************** NASA Delays Post-Columbia Flight Again By MARCIA DUNN, AP Aerospace Writer NASA on Friday delayed by another two months the first space shuttle flight since the Columbia disaster, saying it needs more time to ensure that the fuel tank does not shed dangerous pieces of ice at liftoff. Discovery is now scheduled for launch no earlier than July 13. The flight had been targeted for late May. A large chunk of foam insulation from the external fuel tank punched a hole in Columbia's wing that led to the shuttle and crew's demise during re-entry in February 2003. Now, the lingering concern involves the possible buildup of ice on the tank once it's filled with super-cold fuel, and the hazard such shards would pose if they came off during the launch and hit the shuttle. NASA's new administrator, Michael Griffin, announced the delay at a midmorning televised news conference, saying it was the result of recent launch-debris reviews. "This is consistent with our overall approach to return to flight, which is that we're going to return to flight. We are not going to rush to flight, and we want it to be right, so we're doing what we need to do to ensure that," Griffin said. Extra repairs to Discovery's fuel tank will be needed, namely the addition of a heater, said NASA's top spaceflight official, Bill Readdy. The work means that NASA will have to remove Discovery from the launch pad and return it to the massive Vehicle Assembly Building. The prime area of concern is a 17-inch-diameter liquid oxygen line that runs 70 feet down the lower half of the 154-foot tank. Its expansion joints have produced ice in the past. After the Columbia accident, NASA devised a foam skirt, or so-called drip lip, to wick moisture away from the joints. Engineers believe it would reduce ice formation by 50 percent. Shuttle managers decided a more comprehensive repair was needed. Technicians will install a heater at the uppermost joint, something already planned for flights beyond Discovery's. To add the heater on Discovery, the shuttle will have to be hauled back to its hangar, which will add days if not weeks to launch preparations. NASA is also concerned about possible ice formation on the brackets that hold the oxygen line to the tank. The shuttle team is dealing with a few other unrelated problems with Discovery, involving balky engine-cutoff sensors in the fuel tank and thermal blankets contaminated recently with hydraulic fluid. Readdy said the extra two months will provide time to resolve all of these issues, and they will be tackled first while the shuttle is still at the launch pad. Another fueling test of Discovery's tank may be necessary, Readdy said. The test a month ago ago uncovered the intermittent sensor trouble and a few other problems. Griffin said he accepted shuttle managers' recommendation to postpone the flight, to perform the extra work. "I want to launch as soon as we can," said Griffin, who took over the top NASA job just two weeks ago. But he added that he wants the launch to be safe. "Schedule matters," he said. "It shouldn't matter to the point of causing people to do dumb things or to take ill-advised actions ... We want to launch Discovery when we can because the completion of the international space station depends upon an expeditious launch schedule. We don't want to launch it sooner than we can." Columbia was brought down on Feb. 1, 2003, by a gash in the left wing that was caused by a suitcase-size piece of foam that broke off the tank during liftoff. All seven astronauts were killed 16 days later during re-entry. NASA wants the first two post-Columbia launches held in daylight to ensure good photography of the shuttle and its fuel tank, which has been modified to prevent big pieces of foam insulation from coming off. Daylight also is needed over the North Atlantic in order to capture good photos of the fuel tank as it drops off eight minutes after liftoff. The July window extends from July 13 until July 31. If Discovery does not fly in July, the next opportunity would come in September. The 12-day mission will supply much-needed supplies and replacement parts to the space station. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
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