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On Jan 29, 3:41*pm, JF Mezei wrote:
On 13-01-29 12:20, SalemHanna wrote: But there's no way of knowing when the foam problem would have next caused fatalities if left uncorrected, The later part is of course the big question. If let to its own devices, would NASA have eventually corrected the foam problem ? They knew of it, but didn't put it in a high priority. And while they wouldn't have retro-foamed existing tanks, they may have set new standards for foaming new tanks which would have reduced the problems.. Also, post assembly complete, with reduced flight rate, the odds of an accident happening would have also gone down. if you read wayne hales article it makes a interesting point. they didnt image columbia because his boss thought it hopeless and had decided its best to not tell the astronauts..... let them live to re entry happy rather than die in orbit after running out of air...... the larger issue for the future, we should always have enough back up capacity in case of a problem. like some emergency launch supplies to orbit capacity. |
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On Feb 3, 7:44*pm, Jeff Findley wrote:
In article f19ffb38-6157-4e04-bfe1- , says... if you read wayne hales article it makes a interesting point. they didnt image columbia because his boss thought it hopeless and had decided its best to not tell the astronauts..... Cite? *I don't often read is blog. *But I will note that on the subject of Challenger, his opinion on the cause is not consistent with your belief that "management caused the failure". *You should go back and read the CAIB from cover to cover. *Life is more complex than your oversimplifications. let them live to re entry happy rather than die in orbit after running out of air...... the larger issue for the future, we should always have enough back up capacity in case of a problem. like some emergency launch supplies to orbit capacity. This B.S. again? *There isn't one credible scenario, even Columbia, which would have absolutely required what you're asking for. Jeff -- "the perennial claim that hypersonic airbreathing propulsion would magically make space launch cheaper is nonsense -- LOX is much cheaper than advanced airbreathing engines, and so are the tanks to put it in and the extra thrust to carry it." - Henry Spencer WASHINGTON (AP) — A NASA top official wrestled with what he thought was a hypothetical question: What should you tell the astronauts of a doomed space shuttle Columbia? When the NASA official raised the question in 2003 just days before the accident that claimed seven astronauts' lives, managers thought — wrongly — that Columbia's heat shield was fine. It wasn't. Columbia, NASA's oldest shuttle, broke apart over Texas 10 years ago Friday upon returning to Earth after a 16-day mission. But the story of that question — retold a decade later — illustrates a key lesson from the tragedy, says Wayne Hale, a flight director who later ran the shuttle program for NASA. That lesson: Never give up. No matter how hopeless. And to illustrate the lesson, Hale in his blog tells for the first time the story of his late boss who seemingly suggested doing just that. The boss, mission operations chief Jon Harpold, asked the now- retired Hale a what-if question after a meeting that determined — wrongly — that Columbia was safe to land despite some damage after takeoff. "You know there is nothing we can do about damage to the (thermal protection system)," Hale quotes Harpold a decade later. "If it has been damaged, it's probably better not to know. I think the crew would rather not know. Don't you think it would be better for them to have a happy successful flight and die unexpectedly during entry than to stay on orbit, knowing that there was nothing to be done until the air ran out." When Harpold raised the question with Hale in 2003, managers had already concluded that Columbia's heat shield was fine. They told astronauts they weren't worried about damage from foam insulation coming off the massive shuttle fuel tank during launch, hitting a wing that allowed superheated gases in when the shuttle re-entered the atmosphere. No one was aware of the seriousness of the damage at the time. This was a what-if type question that conveyed a fatalistic attitude about the heat shield system being unfixable, which was "a wrong- headed cultural norm that we had all bought into," Hale said in a Thursday telephone interview. "There was never any debate about what to tell the crew," he said. In fact, NASA officials were overconfident in the heat shield on Columbia. A day after launch, NASA saw video of the foam from the shuttle's fuel tank hit the shuttle wing, something that had happened before. NASA officials studied the damage and determined it wasn't a problem. NASA managers even sent the crew a 15-second video clip of the foam strike and "made it very clear to them no, no concerns," according to the independent board that later investigated the accident. Eight times, NASA had the opportunity to get a closer look at the damage— using military satellites — and NASA mistakenly ignored those chances to see how bad the problem was, the accident board concluded. And had NASA realized the severity of the problem, the space agency would not have just let the astronauts die without a fight or a word, despite Harpold's hypothetical question, Hale said. "We would have pulled out all the stops. There would have been no stone left unturned. We would have had the entire nation working on it," Hale said. Ultimately, Hale said he thinks whatever NASA would have tried in 2003 with limited time and knowledge probably would have failed. And the astronauts would have been told about the problem and their fate had engineers really known what was happening, Hale said. When NASA started flying shuttles again, Hale told the new team of mission managers: "We are never ever going to say that there is nothing we can do." NASA developed an in-flight heat shield repair kit. The space shuttles were retired in 2011. Harpold died in 2004. Hale said he is now writing about the issue because he wanted future space officials not to make the mistakes he and his colleagues did. The loss of the Columbia astronauts — people he knew — still weighs on Hale. "You never get over it. It's always present with you," Hale said. "These are people I knew well. Several of them, I worked closely with. I was responsible for their safety. It's never going to go away." ___ Online: Wayne Hale's blog: http://waynehale.wordpress.com/ so wayne believes the effort would of failed? why would that have been? time was short, care packages of food oxygen etc could of extended the crews lives long enough till another orbiter could of rescued the crew...... but nasa has no emergency supplies to orbit capacity, one day that could be useful for ISS or a soyuz in trouble........ Reading between the lines of waynes statement they may not have imaged the orbiter because his boss thought it wouldnt of mattered....... at least thats my take on his statement |
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In article 0742dbcf-7f3c-47d3-ad57-
, says... WASHINGTON (AP) ? A NASA top official wrestled with what he thought was a hypothetical question: What should you tell the astronauts of a doomed space shuttle Columbia? When the NASA official raised the question in 2003 just days before the accident that claimed seven astronauts' lives, managers thought ? wrongly ? that Columbia's heat shield was fine. It wasn't. Columbia, NASA's oldest shuttle, broke apart over Texas 10 years ago Friday upon returning to Earth after a 16-day mission. But the story of that question ? retold a decade later ? illustrates a key lesson from the tragedy, says Wayne Hale, a flight director who later ran the shuttle program for NASA. That lesson: Never give up. No matter how hopeless. And to illustrate the lesson, Hale in his blog tells for the first time the story of his late boss who seemingly suggested doing just that. The boss, mission operations chief Jon Harpold, asked the now- retired Hale a what-if question after a meeting that determined ? wrongly ? that Columbia was safe to land despite some damage after takeoff. "You know there is nothing we can do about damage to the (thermal protection system)," Hale quotes Harpold a decade later. "If it has been damaged, it's probably better not to know. I think the crew would rather not know. Don't you think it would be better for them to have a happy successful flight and die unexpectedly during entry than to stay on orbit, knowing that there was nothing to be done until the air ran out." When Harpold raised the question with Hale in 2003, managers had already concluded that Columbia's heat shield was fine. They told astronauts they weren't worried about damage from foam insulation coming off the massive shuttle fuel tank during launch, hitting a wing that allowed superheated gases in when the shuttle re-entered the atmosphere. No one was aware of the seriousness of the damage at the time. This was a what-if type question that conveyed a fatalistic attitude about the heat shield system being unfixable, which was "a wrong- headed cultural norm that we had all bought into," Hale said in a Thursday telephone interview. "There was never any debate about what to tell the crew," he said. In fact, NASA officials were overconfident in the heat shield on Columbia. A day after launch, NASA saw video of the foam from the shuttle's fuel tank hit the shuttle wing, something that had happened before. NASA officials studied the damage and determined it wasn't a problem. NASA managers even sent the crew a 15-second video clip of the foam strike and "made it very clear to them no, no concerns," according to the independent board that later investigated the accident. Eight times, NASA had the opportunity to get a closer look at the damage? using military satellites ? and NASA mistakenly ignored those chances to see how bad the problem was, the accident board concluded. And had NASA realized the severity of the problem, the space agency would not have just let the astronauts die without a fight or a word, despite Harpold's hypothetical question, Hale said. "We would have pulled out all the stops. There would have been no stone left unturned. We would have had the entire nation working on it," Hale said. Ultimately, Hale said he thinks whatever NASA would have tried in 2003 with limited time and knowledge probably would have failed. And the astronauts would have been told about the problem and their fate had engineers really known what was happening, Hale said. When NASA started flying shuttles again, Hale told the new team of mission managers: "We are never ever going to say that there is nothing we can do." NASA developed an in-flight heat shield repair kit. The space shuttles were retired in 2011. Harpold died in 2004. Hale said he is now writing about the issue because he wanted future space officials not to make the mistakes he and his colleagues did. The loss of the Columbia astronauts ? people he knew ? still weighs on Hale. "You never get over it. It's always present with you," Hale said. "These are people I knew well. Several of them, I worked closely with. I was responsible for their safety. It's never going to go away." ___ Online: Wayne Hale's blog: http://waynehale.wordpress.com/ so wayne believes the effort would of failed? why would that have been? time was short, care packages of food oxygen etc could of extended the crews lives long enough till another orbiter could of rescued the crew...... No one at the time believed that there was a problem with the TPS. Based on the best information they had at the time, they made the best call they could. You're leaping to conclusions far beyond a reasonable "what could have been". but nasa has no emergency supplies to orbit capacity, one day that could be useful for ISS or a soyuz in trouble........ No credible scenario exists to justify this capability, especially since all manned spaceflight by the US is going up on Russian Soyuz capsules to ISS. ISS is the "safe haven" in any current credible scenario. Reading between the lines of waynes statement they may not have imaged the orbiter because his boss thought it wouldnt of mattered....... at least thats my take on his statement Do note that his statements are made in hindsight. Jeff -- "the perennial claim that hypersonic airbreathing propulsion would magically make space launch cheaper is nonsense -- LOX is much cheaper than advanced airbreathing engines, and so are the tanks to put it in and the extra thrust to carry it." - Henry Spencer |
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On Feb 4, 9:48*am, Jeff Findley wrote:
In article 0742dbcf-7f3c-47d3-ad57- , says... WASHINGTON (AP) ? A NASA top official wrestled with what he thought was a hypothetical question: What should you tell the astronauts of a doomed space shuttle Columbia? When the NASA official raised the question in 2003 just days before the accident that claimed seven astronauts' lives, managers thought ? wrongly ? that Columbia's heat shield was fine. It wasn't. Columbia, NASA's oldest shuttle, broke apart over Texas 10 years ago Friday upon returning to Earth after a 16-day mission. But the story of that question ? retold a decade later ? illustrates a key lesson from the tragedy, says Wayne Hale, a flight director who later ran the shuttle program for NASA. That lesson: Never give up. No matter how hopeless. And to illustrate the lesson, Hale in his blog tells for the first time the story of his late boss who seemingly suggested doing just that. The boss, mission operations chief Jon Harpold, asked the now- retired Hale a what-if question after a meeting that determined ? wrongly ? that Columbia was safe to land despite some damage after takeoff. "You know there is nothing we can do about damage to the (thermal protection system)," Hale quotes Harpold a decade later. "If it has been damaged, it's probably better not to know. I think the crew would rather not know. Don't you think it would be better for them to have a happy successful flight and die unexpectedly during entry than to stay on orbit, knowing that there was nothing to be done until the air ran out." When Harpold raised the question with Hale in 2003, managers had already concluded that Columbia's heat shield was fine. They told astronauts they weren't worried about damage from foam insulation coming off the massive shuttle fuel tank during launch, hitting a wing that allowed superheated gases in when the shuttle re-entered the atmosphere. No one was aware of the seriousness of the damage at the time. This was a what-if type question that conveyed a fatalistic attitude about the heat shield system being unfixable, which was "a wrong- headed cultural norm that we had all bought into," Hale said in a Thursday telephone interview. "There was never any debate about what to tell the crew," he said. In fact, NASA officials were overconfident in the heat shield on Columbia. A day after launch, NASA saw video of the foam from the shuttle's fuel tank hit the shuttle wing, something that had happened before. NASA officials studied the damage and determined it wasn't a problem. NASA managers even sent the crew a 15-second video clip of the foam strike and "made it very clear to them no, no concerns," according to the independent board that later investigated the accident. Eight times, NASA had the opportunity to get a closer look at the damage? using military satellites ? and NASA mistakenly ignored those chances to see how bad the problem was, the accident board concluded. And had NASA realized the severity of the problem, the space agency would not have just let the astronauts die without a fight or a word, despite Harpold's hypothetical question, Hale said. "We would have pulled out all the stops. There would have been no stone left unturned. We would have had the entire nation working on it," Hale said. Ultimately, Hale said he thinks whatever NASA would have tried in 2003 with limited time and knowledge probably would have failed. And the astronauts would have been told about the problem and their fate had engineers really known what was happening, Hale said. When NASA started flying shuttles again, Hale told the new team of mission managers: "We are never ever going to say that there is nothing we can do." NASA developed an in-flight heat shield repair kit. The space shuttles were retired in 2011. Harpold died in 2004. Hale said he is now writing about the issue because he wanted future space officials not to make the mistakes he and his colleagues did. The loss of the Columbia astronauts ? people he knew ? still weighs on Hale. "You never get over it. It's always present with you," Hale said. "These are people I knew well. Several of them, I worked closely with. I was responsible for their safety. It's never going to go away." ___ Online: Wayne Hale's blog:http://waynehale.wordpress.com/ so wayne believes the effort would of failed? why would that have been? time was short, care packages of food oxygen etc could of extended the crews lives long enough till another orbiter could of rescued the crew...... No one at the time believed that there was a problem with the TPS. Based on the best information they had at the time, they made the best call they could. *You're leaping to conclusions far beyond a reasonable "what could have been". but nasa has no emergency supplies to orbit capacity, one day that could be useful for ISS or a soyuz in trouble........ No credible scenario exists to justify this capability, especially since all manned spaceflight by the US is going up on Russian Soyuz capsules to ISS. *ISS is the "safe haven" in any current credible scenario. Reading between the lines of waynes statement they may not have imaged the orbiter because his boss thought it wouldnt of mattered....... at least thats my take on his statement Do note that his statements are made in hindsight. Jeff do note that earlier shuttle flights had returned wth wing damage approaching burn thru but no one cared.... |
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"bob haller" wrote in message
... On Feb 4, 9:48 am, Jeff Findley wrote: In article 0742dbcf-7f3c-47d3-ad57- , says... WASHINGTON (AP) ? A NASA top official wrestled with what he thought was a hypothetical question: What should you tell the astronauts of a doomed space shuttle Columbia? When the NASA official raised the question in 2003 just days before the accident that claimed seven astronauts' lives, managers thought ? wrongly ? that Columbia's heat shield was fine. It wasn't. Columbia, NASA's oldest shuttle, broke apart over Texas 10 years ago Friday upon returning to Earth after a 16-day mission. But the story of that question ? retold a decade later ? illustrates a key lesson from the tragedy, says Wayne Hale, a flight director who later ran the shuttle program for NASA. That lesson: Never give up. No matter how hopeless. And to illustrate the lesson, Hale in his blog tells for the first time the story of his late boss who seemingly suggested doing just that. The boss, mission operations chief Jon Harpold, asked the now- retired Hale a what-if question after a meeting that determined ? wrongly ? that Columbia was safe to land despite some damage after takeoff. "You know there is nothing we can do about damage to the (thermal protection system)," Hale quotes Harpold a decade later. "If it has been damaged, it's probably better not to know. I think the crew would rather not know. Don't you think it would be better for them to have a happy successful flight and die unexpectedly during entry than to stay on orbit, knowing that there was nothing to be done until the air ran out." When Harpold raised the question with Hale in 2003, managers had already concluded that Columbia's heat shield was fine. They told astronauts they weren't worried about damage from foam insulation coming off the massive shuttle fuel tank during launch, hitting a wing that allowed superheated gases in when the shuttle re-entered the atmosphere. No one was aware of the seriousness of the damage at the time. This was a what-if type question that conveyed a fatalistic attitude about the heat shield system being unfixable, which was "a wrong- headed cultural norm that we had all bought into," Hale said in a Thursday telephone interview. "There was never any debate about what to tell the crew," he said. In fact, NASA officials were overconfident in the heat shield on Columbia. A day after launch, NASA saw video of the foam from the shuttle's fuel tank hit the shuttle wing, something that had happened before. NASA officials studied the damage and determined it wasn't a problem. NASA managers even sent the crew a 15-second video clip of the foam strike and "made it very clear to them no, no concerns," according to the independent board that later investigated the accident. Eight times, NASA had the opportunity to get a closer look at the damage? using military satellites ? and NASA mistakenly ignored those chances to see how bad the problem was, the accident board concluded. And had NASA realized the severity of the problem, the space agency would not have just let the astronauts die without a fight or a word, despite Harpold's hypothetical question, Hale said. "We would have pulled out all the stops. There would have been no stone left unturned. We would have had the entire nation working on it," Hale said. Ultimately, Hale said he thinks whatever NASA would have tried in 2003 with limited time and knowledge probably would have failed. And the astronauts would have been told about the problem and their fate had engineers really known what was happening, Hale said. When NASA started flying shuttles again, Hale told the new team of mission managers: "We are never ever going to say that there is nothing we can do." NASA developed an in-flight heat shield repair kit. The space shuttles were retired in 2011. Harpold died in 2004. Hale said he is now writing about the issue because he wanted future space officials not to make the mistakes he and his colleagues did. The loss of the Columbia astronauts ? people he knew ? still weighs on Hale. "You never get over it. It's always present with you," Hale said. "These are people I knew well. Several of them, I worked closely with. I was responsible for their safety. It's never going to go away." ___ Online: Wayne Hale's blog:http://waynehale.wordpress.com/ so wayne believes the effort would of failed? why would that have been? time was short, care packages of food oxygen etc could of extended the crews lives long enough till another orbiter could of rescued the crew...... No one at the time believed that there was a problem with the TPS. Based on the best information they had at the time, they made the best call they could. You're leaping to conclusions far beyond a reasonable "what could have been". but nasa has no emergency supplies to orbit capacity, one day that could be useful for ISS or a soyuz in trouble........ No credible scenario exists to justify this capability, especially since all manned spaceflight by the US is going up on Russian Soyuz capsules to ISS. ISS is the "safe haven" in any current credible scenario. Reading between the lines of waynes statement they may not have imaged the orbiter because his boss thought it wouldnt of mattered....... at least thats my take on his statement Do note that his statements are made in hindsight. Jeff do note that earlier shuttle flights had returned wth wing damage approaching burn thru but no one cared.... Yes, but NONE (as far as I can recall) had damage to the leading edge. Wayne Hale in his blog discusses the (as does the CAIB I believe) fact that no one really believed the leading edge could suffer the sort of damage it did from the strike it suffered. In addition, their analysis of the video of the hit showed no debris over the wing. As such they were going based on CRATER estimates of damage to the tiles underneath the wing. Unfortunately, while they were right about the CRATER estimates, they were wrong about the leading edge strength. And as he makes the point in his blog, they were completely wrong in accepting ANY strikes. I will point out that NASA is FAR from alone in this mistake. MANY industries make the mistake accepting deviations from the norm as "ok". This was a big part of the Challenger disaster. Folks knew about O-ring issues, but were accepting it, despite the fact it was never supposed to happen. -- Greg D. Moore http://greenmountainsoftware.wordpress.com/ CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net |
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*But I will note that on the subject
of Challenger, his opinion on the cause is not consistent with your belief that "management caused the failure". *You should go back and read the CAIB from cover to cover. *Life is more complex than your oversimplifications. challenger and columbia were both management failures, partially burned thru o rings, partial wing burn thru...... the failures were clearly visible, management ignored the clear indicators of coming disaster, and the crews died |
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"bob haller" wrote in message
... On Jan 29, 3:41 pm, JF Mezei wrote: On 13-01-29 12:20, SalemHanna wrote: But there's no way of knowing when the foam problem would have next caused fatalities if left uncorrected, The later part is of course the big question. If let to its own devices, would NASA have eventually corrected the foam problem ? They knew of it, but didn't put it in a high priority. And while they wouldn't have retro-foamed existing tanks, they may have set new standards for foaming new tanks which would have reduced the problems. Also, post assembly complete, with reduced flight rate, the odds of an accident happening would have also gone down. if you read wayne hales article it makes a interesting point. they didnt image columbia because his boss thought it hopeless and had decided its best to not tell the astronauts..... Umm, I've been reading Wayne's blog. I don't see where he made that point. He does admit he thought he had asked someone to inquire about imaging, the other person recalls being asked what it would take or something like that. He admits there was a failure to communicate there. He also discusses the compartmentalization of information and ability to communicate, especially with the military (most flight controllers had allowed any security clearance they had to elapse after the DOD flights ended). let them live to re entry happy rather than die in orbit after running out of air...... Again, discussed purely in the hypothetical. Unfortunately ABC news in on article and others picked up on it made it sound like NASA officials knew what was going to happen. the larger issue for the future, we should always have enough back up capacity in case of a problem. like some emergency launch supplies to orbit capacity. -- Greg D. Moore http://greenmountainsoftware.wordpress.com/ CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net |
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