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number of layers in Apollo, ISS spacesuit ?
Hi, Could someone help be to find the correct version ? I read at http://en.wikipedia.org/wiki/Extrave..._Mobility_Unit that the apollo EVA suit was made of 21 layers. It is the first time I read this. Most websites tell that the A7L suit used for EVA during the moon missions had only 7 layers Question : what suit used Apollo crew during EVA ? An A7L made of 7-layers or something else ? Do you also confirm that it was only for ISS that NASA used a 14-layer suit to made the EMU. Some speak of a 15 layer suit ? Was the original EMU made of 14 layers, and the lastest one, a bit lighter named ISS EMU made of 15 layers ? Thanks for your light Thierry |
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number of layers in Apollo, ISS spacesuit ?
i think 21 for apollo landing suits.
there was a story a few years ago about them literally falling apart from the incompatiple layers debonding or something. each had a important job but ere never designed to co exist 30 plus years. they were trying to figure out how to stop the detoriation |
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number of layers in Apollo, ISS spacesuit ?
Thierry wrote: Hi, Could someone help be to find the correct version ? I read at http://en.wikipedia.org/wiki/Extrave..._Mobility_Unit that the apollo EVA suit was made of 21 layers. It is the first time I read this. Most websites tell that the A7L suit used for EVA during the moon missions had only 7 layers Question : what suit used Apollo crew during EVA ? An A7L made of 7-layers or something else ? From "U.S. Space Gear, Outfitting the Astronaut" by Lillian D. Kozloski, the lunar extravehicular suit A7LB used on Apollo 14, 15, 16 and 17 included: Layers: 1 - Teflon cloth 2 - Beta cloth 3,5,7 - Beta marquisette 4,6 - Aluminized gridded Kapton 8,10,12,14,16 - Aluminized Mylar performated film 9,11,13,15,17 - Nonwoven Dacron 18 - Neoprene-coated Nylon 19 - Nylon fabric 20 - Neoprene-coated Nylon 21 - Lycra jersey 22 - Lightweight Nomex cloth In addition, the Liquid Cooling Garment is listed as: 23 - Nylon spandex (Hold vinyl tubing) 24 - Vinyl tubing (Water cooling distribution 25 - Porous nylon (Comfort layer) Do you also confirm that it was only for ISS that NASA used a 14-layer suit to made the EMU. Some speak of a 15 layer suit ? Was the original EMU made of 14 layers, and the lastest one, a bit lighter named ISS EMU made of 15 layers ? The same reference shows a shuttle EMU consisting of: For the thermal micrometeoroid garment: 1 - Ortho-fabric (Gore-Tex fibers woven with Nomex, backed with Kevlar) 2-6, Aluminized Mylar backed with unwoven Dacron 7 - Neoprene-coated nylon ripstop and the PGA consisting of: 8 - Dacron woven with axial lines 9 - Polyurethane-coated Nylon and a liquid cooling garment of 10 - Nylon acetate spandex woven with tubing 11 - Nylon acetate Note that some of these are listed as separate layers in the A7LB suit, but combined in the EMU suit. This doesn't answer all your question, but is at least a starting point. Thanks for your light Thierry |
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number of layers in Apollo, ISS spacesuit ?
Thierry wrote:
Hi, Could someone help be to find the correct version ? I read at http://en.wikipedia.org/wiki/Extrave..._Mobility_Unit that the apollo EVA suit was made of 21 layers. It is the first time I read this. Most websites tell that the A7L suit used for EVA during the moon missions had only 7 layers Question : what suit used Apollo crew during EVA ? An A7L made of 7-layers or something else ? Do you also confirm that it was only for ISS that NASA used a 14-layer suit to made the EMU. Some speak of a 15 layer suit ? Was the original EMU made of 14 layers, and the lastest one, a bit lighter named ISS EMU made of 15 layers ? Thanks for your light Thierry First of all, man, stay the hell away from Wikipedia, unless you're looking for info on pressure suits used by Star Trek characters, or information on pressure suit technology in Klingonese. Large numbers of junior-high and high-school kids (at least in the USA) are being summarily flunked for citing Wikipedia on their research papers due to its editing methods and perverse refusal to publish articles written by actual experts in their subjects. That said, peep:http://www.astronautix.com/craft/a7l.htm There were several mods to the A7L for intra- and extra-vehicular use; there was the standard one that you always see them in in all those old pictures, there were at least two mods for use in lunar EVA involving micrometeoroid-protective coverings, cleated overshoes and helmet sheild/visor assemblies, and there were mods further down the line for use in SkyLab's different EVA requirements. 'Fraid I don't recall much about the Shuttle/ISS EVA suits other than their being far more advanced despite their outward resemblance to the old Apollo EVA gear. Wishing they'd been able to put a camera on Armstrong's helmet, -- .. "Though I could not caution all, I yet may warn a few: Don't lend your hand to raise no flag atop no ship of fools!" --grateful dead. __________________________________________________ _____________ Mike Flugennock, flugennock at sinkers dot org "Mikey'zine": dubya dubya dubya dot sinkers dot org |
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