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http://www.floridatoday.com/news/spa...804SHUTTLE.htm
CAPE CANAVERAL-- NASA plans to have a rescue shuttle ready for just the first two post-Columbia missions. After that, they might go back to business as usual. If the first two flights make NASA confident the safety fixes to the shuttles are working, agency managers said they might determine it's no longer necessary to have a rescue vehicle on standby for future missions. "After that, we will take a look and evaluate . . . and see where we need to go from there," said John Casper, a former astronaut now leading NASA's effort to implement recommendations made by the Columbia Accident Investigation Board. When Discovery blasts off on the first return-to-flight mission, as early as the spring, NASA says Kennedy Space Center will be ready to launch Atlantis on a rescue mission within 45 days. On the second flight, a rescue shuttle will be ready to go within 58 days. That's the amount of time that engineers estimate there would be food, water and working life support systems aboard the International Space Station to keep a larger crew of 10 people alive if the shuttle somehow becomes stranded there on one of the first two flights. Safety changes, such as reducing the amount of external tank foam debris battering the orbiters' heat shields, will be tested on those flights. "We need to understand the fixes that we've done we need to understand how well the systems work," shuttle program manager Bill Parsons said. Having a rescue shuttle on standby never was a requirement before Columbia because the agency was confident it was flying a reliable vehicle, Parsons said. If the safety modifications work as planned, engineers and managers may regain confidence that a rescue shuttle is not necessary. That's not the only post-Columbia change that might only last two launches. A requirement to launch during the daytime so that tracking cameras can get clear images of possible debris strikes also may go away after the first two launches, NASA has said. Getting rid of those two requirements would be a big boost to meeting President Bush's directive to finish building the space station and retire the aging shuttles by 2010. Doing so will require flying four to six times per year, a rate that was difficult to meet prior to Columbia. They dismissed suggestions by people inside and outside the agency that a rescue can't be pulled off, however. "We know it's do-able," Parsons said. Contact Kelly at 242-3660 or HAVE A GREAT DAY! |
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One wonders if it might not be better to pay the Russians for some spare
Soyuz systems instead, and send them up empty to dock one at a time to evacuate the bulk of the crew, and leave one or two behind to look after the Shuttle until it can be fixed. My feelings are here that all of this mess has been caused by the eggs in one basket syndrome, and the inability to see that their craft cannot last forever. They should have been flying a replacement by now if the powers that be had thought it through and got it funded. Anyway, I suppose its still the only game in town. Brian -- Brian Gaff....Note, this account does not accept Bcc: email. graphics are great, but the blind can't hear them Email: __________________________________________________ __________________________ __________________________________ "bob haller" wrote in message ... http://www.floridatoday.com/news/spa...804SHUTTLE.htm CAPE CANAVERAL-- NASA plans to have a rescue shuttle ready for just the first two post-Columbia missions. After that, they might go back to business as usual. If the first two flights make NASA confident the safety fixes to the shuttles are working, agency managers said they might determine it's no longer necessary to have a rescue vehicle on standby for future missions. "After that, we will take a look and evaluate . . . and see where we need to go from there," said John Casper, a former astronaut now leading NASA's effort to implement recommendations made by the Columbia Accident Investigation Board. When Discovery blasts off on the first return-to-flight mission, as early as the spring, NASA says Kennedy Space Center will be ready to launch Atlantis on a rescue mission within 45 days. On the second flight, a rescue shuttle will be ready to go within 58 days. That's the amount of time that engineers estimate there would be food, water and working life support systems aboard the International Space Station to keep a larger crew of 10 people alive if the shuttle somehow becomes stranded there on one of the first two flights. Safety changes, such as reducing the amount of external tank foam debris battering the orbiters' heat shields, will be tested on those flights. "We need to understand the fixes that we've done we need to understand how well the systems work," shuttle program manager Bill Parsons said. Having a rescue shuttle on standby never was a requirement before Columbia because the agency was confident it was flying a reliable vehicle, Parsons said. If the safety modifications work as planned, engineers and managers may regain confidence that a rescue shuttle is not necessary. That's not the only post-Columbia change that might only last two launches. A requirement to launch during the daytime so that tracking cameras can get clear images of possible debris strikes also may go away after the first two launches, NASA has said. Getting rid of those two requirements would be a big boost to meeting President Bush's directive to finish building the space station and retire the aging shuttles by 2010. Doing so will require flying four to six times per year, a rate that was difficult to meet prior to Columbia. They dismissed suggestions by people inside and outside the agency that a rescue can't be pulled off, however. "We know it's do-able," Parsons said. Contact Kelly at 242-3660 or HAVE A GREAT DAY! --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.732 / Virus Database: 486 - Release Date: 29/07/2004 |
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sounds like NASA has learned *nothing* from either the Challenger or
Columbia accidents. Same old same old, schedule pressure trumps anything else. In the months after Challenger NASA released the revised flight mainfest, and it was basically the same as the pre-51L manifest except the dates were pushed back, the Vandenberg missions were removed, and the orbiters adjusted. But they *still* were planning the same unreachable flight rate. Exact same thing here. Exact same slippage of safety standards and acceptance of out-of-tolerance conditions that ultimately led to Challenger and Columbia. I guess they are gambling that there simply will not be enough flights left on the manifest this time to have another LOCV accident. It's time NASA's manned spaceflight program goes bye-bye. We get it. -- Terrell Miller "Brian Gaff" wrote in message ... One wonders if it might not be better to pay the Russians for some spare Soyuz systems instead, and send them up empty to dock one at a time to evacuate the bulk of the crew, and leave one or two behind to look after the Shuttle until it can be fixed. My feelings are here that all of this mess has been caused by the eggs in one basket syndrome, and the inability to see that their craft cannot last forever. They should have been flying a replacement by now if the powers that be had thought it through and got it funded. Anyway, I suppose its still the only game in town. Brian -- Brian Gaff....Note, this account does not accept Bcc: email. graphics are great, but the blind can't hear them Email: __________________________________________________ __________________________ __________________________________ "bob haller" wrote in message ... http://www.floridatoday.com/news/spa...804SHUTTLE.htm CAPE CANAVERAL-- NASA plans to have a rescue shuttle ready for just the first two post-Columbia missions. After that, they might go back to business as usual. If the first two flights make NASA confident the safety fixes to the shuttles are working, agency managers said they might determine it's no longer necessary to have a rescue vehicle on standby for future missions. "After that, we will take a look and evaluate . . . and see where we need to go from there," said John Casper, a former astronaut now leading NASA's effort to implement recommendations made by the Columbia Accident Investigation Board. When Discovery blasts off on the first return-to-flight mission, as early as the spring, NASA says Kennedy Space Center will be ready to launch Atlantis on a rescue mission within 45 days. On the second flight, a rescue shuttle will be ready to go within 58 days. That's the amount of time that engineers estimate there would be food, water and working life support systems aboard the International Space Station to keep a larger crew of 10 people alive if the shuttle somehow becomes stranded there on one of the first two flights. Safety changes, such as reducing the amount of external tank foam debris battering the orbiters' heat shields, will be tested on those flights. "We need to understand the fixes that we've done we need to understand how well the systems work," shuttle program manager Bill Parsons said. Having a rescue shuttle on standby never was a requirement before Columbia because the agency was confident it was flying a reliable vehicle, Parsons said. If the safety modifications work as planned, engineers and managers may regain confidence that a rescue shuttle is not necessary. That's not the only post-Columbia change that might only last two launches. A requirement to launch during the daytime so that tracking cameras can get clear images of possible debris strikes also may go away after the first two launches, NASA has said. Getting rid of those two requirements would be a big boost to meeting President Bush's directive to finish building the space station and retire the aging shuttles by 2010. Doing so will require flying four to six times per year, a rate that was difficult to meet prior to Columbia. They dismissed suggestions by people inside and outside the agency that a rescue can't be pulled off, however. "We know it's do-able," Parsons said. Contact Kelly at 242-3660 or HAVE A GREAT DAY! --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.732 / Virus Database: 486 - Release Date: 29/07/2004 |
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hallerb wrote:
Getting rid of those two requirements would be a big boost to meeting President Bush's directive to finish building the space station and retire the aging shuttles by 2010. Doing so will require flying four to six times per year, a rate that was difficult to meet prior to Columbia. This is exactly what I was afraid of. They are now rushing things to get done...to finish the damn program all because of a stupid date. The rescue shuttle idea, fine I can see that being dropped. One orbiter is usually being prepared for a flight anyway and could likely be ready to go to rescue an orbiter stranded at ISS anyway (hell, a rescue mission for STS 107 was theoretically possible, and Columbia was just carrying an old EDO pallet). But it is way too soon to talk about bringing back night launches for the sake of meeting a schedule to retire a vehicle is insane. They shouldn't even be talking about this one until a number of missions have been completed with minimal foam shedding from the ET. Though I do seem to recall reading that astronauts who had flown as chase pilots for the shuttle noted that the SRB's do create enough light during launch that possible a chase aircraft with high powered cameras could photograph for possible foam strikes. In any case, NASA really shouldn't be so damn concerned about meeting that 2010 date...the President shouldn't...nobody should. That was a bad attempt at harkening back to Kennedy's "before this decade is out" directive. When ISS is finished retire the shuttle...if that takes till 2012 or 2013...so be it. NASA might now be paranoid that if it fails to get all the ISS components up by the end of 2010 congress or the President may say "sorry, you won't get to finish it now!" -A.L. |
#5
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![]() On Wed, 4 Aug 2004, Brian Gaff wrote: One wonders if it might not be better to pay the Russians for some spare Soyuz systems instead, and send them up empty to dock one at a time to evacuate the bulk of the crew, and leave one or two behind to look after the Shuttle until it can be fixed. It's illegal for NASA to buy Soyuz spacecraft thanks to the Russians selling nuclear technology to the Iranians. There is also the issue of how capable the Russian Soyuz spacecraft infrastructure is in ramping up production, even if the order and money for new spacecraft was placed in at the soonest possible time.... Say tomorrow. The same is true with Progress. -Mike |
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"Terrell Miller" wrote in
: Exact same thing here. Exact same slippage of safety standards and acceptance of out-of-tolerance conditions that ultimately led to Challenger and Columbia. Incorrect. The two actions in question are not "safety standards"; neither would deleting them be an "out-of-tolerance condition". First, the rescue shuttle. The CAIB issued *no* recommendation regarding rescue shuttles. This omission was *deliberate* - after discussion, the proposal was rejected. NASA chose to implement rescue shuttles on their own for the early return-to-flight missions because those flights will necessarily serve as testbeds for the actual safety improvements recommended by the CAIB, so an extra level of safety would therefore be prudent until these other improvements are validated by flight experience. Therefore, rescue shuttles are not a safety standard, but an action taken *above and beyond* safety standards. Eliminating them is therefore not a "slippage of safety standards". Second, night launches. The relevant CAIB recommendation (R3.4-1) does not require daylight launches. R3.4-1 was, in fact, carefully worded *not* to preclude night launches - only that the imaging system provide at least three useful views of the shuttle from liftoff to SRB separation. This is possible at night using the onboard (SRB/ET) cameras and airborne (WB-57) cameras. Again, NASA restricted itself to day launches *not* because it was required to, but because doing so would provide a means to verify that the upgraded imaging systems are, in fact, working. So returning to night launches is not a "slippage of safety standards", either. It's time NASA's manned spaceflight program goes bye-bye. We get it. No, I'm afraid you don't get it. You jumped to conclusions after reading a shallowly-written Florida Today article, without bothering to examine the article *in context*. That means understanding what the reporters were covering in the article (a NASA press conference announcing the release of their latest return-to-flight planning document), understanding what was actually written in the document, and understanding that document in the context of the CAIB recommendations. -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
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On Wed, 4 Aug 2004 08:27:28 -0400, "Terrell Miller"
wrote: sounds like NASA has learned *nothing* from either the Challenger or Columbia accidents. Same old same old, schedule pressure trumps anything else. Or to put it differently, the real world reared its ugly head. Brian |
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#9
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![]() In any case, NASA really shouldn't be so damn concerned about meeting that 2010 date... They aren't. -- JRF Nasa has every incentive to drag their feet on that date...... The end of the shuttle will bring about wholesale layoffs. no government agency willing downsizes itself gutting the workforce HAVE A GREAT DAY! |
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Jorge R. Frank wrote:
Though I do seem to recall reading that astronauts who had flown as chase pilots for the shuttle noted that the SRB's do create enough light during launch that possible a chase aircraft with high powered cameras could photograph for possible foam strikes. From chase planes, or from aboard the stack itself. From chase planes. No camera to my knowledge has ever been tested on the stack itself for a night launch. In any case, NASA really shouldn't be so damn concerned about meeting that 2010 date... They aren't. "Getting rid of those two requirements would be a big boost to meeting President Bush's directive to finish building the space station and retire the aging shuttles by 2010." This wasn't a quote from anyone in NASA...nor was it suggested in the Florida today article to even paraphrase the thoughts of someone in NASA, but you still gotta wonder if that is playing a factor in NASA's thinking. The launch windows are a lot smaller with only daytime launches. I agree night launches shouldn't be totally ruled out, but I don't think this matter should even be seriously considered until some results are seen in terms of how the modified ET's handle and how the new imaging equipment performs. -A.L. |
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