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First on the Moon: The Untold Story
On 8/8/2012 12:10 AM, Val Kraut wrote:
On Tue, 7 Aug 2012 10:24:53 +0100, "GordonD" wrote: Remember LM was designed with many backup modes to assure success. Supposidly Armstrong had a restless night - the engineers on the ground knew the procedures would work. Val Kraut Thanks for the info V.K. My only comment is that if Neil could survive the LM trainer, he could take care of a lunar landing. If they were looking for sensational, they should have looked into that one, would have taken a lot less creative writing... Dave |
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First on the Moon: The Untold Story
Greg (Strider) Moore wrote:
"Ken S. Tucker" wrote in message ... Greg (Strider) Moore wrote: "Ken S. Tucker" wrote in message ... GordonD wrote: "Ken S. Tucker" wrote in message ... GordonD wrote: Just watched the above documentary, which I assumed was from 2 - 3 years ago but the copyright date at the end was 2005. It was a somewhat sensationalised account of the Apollo 11 flight, focusing on the problems encountered during the mission (the program alarms during descent, the delayed landing leading to low fuel levels and the breaking of the ascent engine arm switch) though they also threw in the sighting of the SLA panel. The impression that came across was that it was more by luck than anything else that the flight was a success. However at one point they stated that the LES wouldn't have worked because in the event of an emergency it would take two seconds to go into operation, whereas the Saturn V would be a big fireball in only half a second. The person who said this was David Baker, author of several books on the space programme, who could in no way be described as a kook. Was he right on this occasion, and if so why hasn't more been made of it? My thoughts as well. I'll hypothesize that the effectiveness of the LES depends on the nature of the anomaly. If a small fire begins the LES would be a lifesaver prior to a catastrophe, IIRC the Ruskies used the system once successfully. Yes, Soyuz T-10, in an off-pad abort when the launch vehicle caught fire. Accounts say it took several seconds for the escape system to be triggered. The earlier abort on Soyuz 18 didn't involve the LES as it was later in the launch phase, after it had been jettisoned. I think you are right about that part of the documentary as being sensational. The whole thing came across that way. The problem with the ascent engine arm switch was portrayed as a real horror story, whereas in reality it was spotted before the moonwalk and the astronauts simply decided that was something they'd have to fix later. There was certainly no panic - I don't think *anything* would cause Armstrong to panic! I'm not sure how or why they inadvertently over flew the intended landing location they were trained for, and in turn had a narrowing margin of time to land, and a defunct radar altimeter, but there's no question that landing was harrowing. They had the Sun on their backs and were able to use the LM shadow as an altimeter. That seems well done in the documentary. Ken They overflew the landing zone because Armstrong spotted more boulders than they thought and wanted a clearer area to land. That's not quite what I have heard, let me quote from wiki Apollo 11, "As the descent began, Armstrong and Aldrin found that they were passing landmarks on the surface 4 seconds early and reported that they were "long": they would land miles west of their target point." Hmm, wasn't aware of that quote. You might find a better ref. It was that 4 seconds that nearly mucked things up. After the landing it was never mentioned much. Interesting. Might be worth perusing Carrying the Fire and some other sources to confirm. Thanks. Welcome, some more from an unusual link... http://www.popsci.com/military-aviat...i-moon-landing "When Apollo 11’s lunar lander, the Eagle, separated from the orbiter, the cabin wasn’t fully depressurized, resulting in a burst of gas equivalent to popping a champagne cork. It threw the module’s landing four miles off-target." Ken |
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First on the Moon: The Untold Story
Ken S. Tucker wrote:
http://www.popsci.com/military-aviat...i-moon-landing "When Apollo 11’s lunar lander, the Eagle, separated from the orbiter, the cabin wasn’t fully depressurized, resulting in a burst of gas equivalent to popping a champagne cork. It threw the module’s landing four miles off-target." 10. The inner bladder of the space suits—the airtight liner that keeps the astronaut’s body under Earth-like pressure—and the ship’s computer’s ROM chips were handmade by teams of “little old ladies.” OK, so it is PopSci but still - "ROM chips???" I assume that was trying to refer to hand-wired core memory? rick jones -- firebug n, the idiot who tosses a lit cigarette out his car window these opinions are mine, all mine; HP might not want them anyway... feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... |
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First on the Moon: The Untold Story
On 11/08/2012 03:54, Rick Jones wrote:
Ken S. Tucker wrote: http://www.popsci.com/military-aviat...i-moon-landing "When Apollo 11’s lunar lander, the Eagle, separated from the orbiter, the cabin wasn’t fully depressurized, resulting in a burst of gas equivalent to popping a champagne cork. It threw the module’s landing four miles off-target." 10. The inner bladder of the space suits—the airtight liner that keeps the astronaut’s body under Earth-like pressure—and the ship’s computer’s ROM chips were handmade by teams of “little old ladies.” OK, so it is PopSci but still - "ROM chips???" I assume that was trying to refer to hand-wired core memory? rick jones Correct, it was the rope core memory. |
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First on the Moon: The Untold Story
On Tuesday, August 7, 2012 11:10:58 PM UTC-5, Val Kraut wrote:
Remember LM was designed with many backup modes to assure success. Supposidly Armstrong had a restless night - the engineers on the ground knew the procedures would work. ....And then there's the final alternative: pop the panel off, flip the breaker with the pen, launch, and once the AM reached orbit, clip the wires to the breaker. Barring the lack of a pen, clip the wires, strip the insulation - with teeth if necessary - twist the wires together, launch, orbit, clip, dock, return home. In polite circles, we called this "Romulan Engineering". OM |
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