Hi Markus I believe however that NASA has set a weight of about 3 kilograms- or about 7 pounds-for the weight of the piece that flaked off the ET. If that same piece hit the leading edge of the wing of a B-747 at the wing root at Mach .89, well it's a good chance the stressed leading edge would lose it's effectiveness and the dynamic pressure would begin to work on the spar it's attached to. At any rate a shot of the leading edge in planform from below is up on the Spaceflight Now main page at: http://spaceflightnow.com/ best, Don Ledger Markus Mehring wrote: > On Fri, 7 Feb 2003 10:46:28 -0700, you ("Dave Radomski - KT0H" > <kt0h@attbi.com>) wrote: > > >>... also suggest that piece of foam was probably partially/fully frozen >>(? -400F or so ?)... pretty hefty brick! > > > Only an issue if the ET foam would be soaked with water like a sponge > (rain, condensation, etc.), which it is designed not to do. The one thing > you want to avoid when launching a rocket is to carry unnecessary weight, > and a tank insulation soaked with water would be an extreme weight penalty. > > > CU! Markus > > ----------------------------------------------------------------- > Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' > in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org > http://www.satellite.eu.org/seesat/seesatindex.html > > ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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