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#11
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Here's a link from a better source. I realize that people have opinions
about this, but has there been a greater incidence of foam shedding since the change was made in 2000? http://www.space.com/missionlaunches...ft_030506.html |
#12
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This one is a NASA link after STS-87. Looks less and less like an urban
legend to me. http://quest.arc.nasa.gov/people/jou...s87-12-23.html |
#13
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"Gil" wrote in message oups.com... Here's a link - it's not where I got the story from originally, but I do remember reading about this after the Columbia accident. I realize the source here is suspect, but is this story completely fabricated? http://www.newsmax.com/archives/ic/2...28/93055.shtml Completely, no. But very poorly researched. For example, the 11x number represents initial numbers, not later numbers where the foam damage had been mostly mitgated. http://images.chron.com/content/news.../28/a-hits.jpg shows some good information. Note that an '85 flight far surpasses anything since the new foam. In addition it fails to note both the bipod ramp foam block and the one that came off the PAL ramp were the old foam. Gil |
#14
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Roy Smith wrote: Most mechanical problems boil down to one of two things: 1) It's too tight. 2) It's too loose. I knew a girl once who got loose when she got tight. ;-) Pat |
#15
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On Sat, 30 Jul 2005 23:09:30 -0500, Pat Flannery wrote:
I knew a girl once who got loose when she got tight. ;-) You didn't let her slip away, did you? Dale |
#16
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"Gil" wrote in
oups.com: This one is a NASA link after STS-87. Looks less and less like an urban legend to me. http://quest.arc.nasa.gov/people/jou...s87-12-23.html That depends on what issue you're talking about. It is a fact that NASA changed the blowing agent for the mechanically- applied acreage foam in 1997, and that this resulted in an increase in orbiter TPS damage due to "popcorning" in the shuttle flights for a year or two afterward. But it is also a fact that NASA continually tweaked the foam after that, and by 2000 had gotten TPS damage down to pre-1997 levels. And it is also a fact that the change in blowing agent did not affect hand- sprayed foam like the bipod ramps and PAL ramp. Therefore, the statement that the change to "environmentally friendly foam" contributed to the Columbia accident (or the PAL ramp loss on the current flight), either directly or indirectly, *is* an urban legend. -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
#17
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Roy Smith writes:
In article , John Steinberg wrote: Carsten A. Arnholm wrote: Yes. Launch the shuttle first and *then* apply the foam. FYI: http://facilities.grc.nasa.gov/spf/ I've just done some very quick scratch figuring and the real answer isn't better foam application but rather a better ablative material. Turns out my materials science manual has the answer on page 831. Duct tape. Two wrappings around the problematic ET and she's good to go. Only potential problem: it might survive re-entry. Most mechanical problems boil down to one of two things: 1) It's too tight. 2) It's too loose. It therefore follows that a roll of duct tape and a can of WD-40 should be able to fix most problems. Is that original? I'd love to use it in my sig! Cheers, alex. |
#18
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Give it basalt composite fibers.
Foam and highly insulative basalt composite fibers (possibly a layer or two of basalt micro-balloons to boot) is just the ticket to ride, and I believe it's well proven as well as being dirt cheap at perhaps representing less overall mass per R-factor. In fact, the entire tank could have been a 100% composite of basalt and perhaps a touch of silica if need be. ~ Don't look: in spite of the orchestrated status quo, it seems there's been other life upon Venus http://guthvenus.tripod.com/gv-town.htm Russian/China LSE-CM/ISS (Lunar Space Elevator) as situated within the ME-L1/EM-L2 sweet-spot http://guthvenus.tripod.com/lunar-space-elevator.htm Venus ETs, Earthly ETs plus a few other somewhat testy topics by; Brad Guth / GASA-IEIS http://guthvenus.tripod.com/gv-topics.htm |
#19
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In article , Roy Smith
wrote: Most mechanical problems boil down to one of two things: 1) It's too tight. 2) It's too loose. It therefore follows that a roll of duct tape and a can of WD-40 should be able to fix most problems. Usage instructions: If you want to make something fast, lubricate it with WD-40, but if you want to make something fast, strap it down with duct tape. -- David M. Palmer (formerly @clark.net, @ematic.com) |
#20
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"Gil" wrote in message oups.com... Here's a link - it's not where I got the story from originally, but I do remember reading about this after the Columbia accident. I realize the source here is suspect, but is this story completely fabricated? http://www.newsmax.com/archives/ic/2...28/93055.shtml What would make you suspect anything? The W coffee mugs for sale? Or maybe the Reagan souvenirs? |
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