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To: willcousa who wrote (172349)	2/4/2003 9:27:22 AM
From: Sig	Respond to of 176387

<<I met some test group folks in Dallas and there were more lost than alive. It is a very risky business. Add to that being anywhere near a rocket and the risk grows a great deal. I remember there were a lot of blow-ups at Santa Susana.>>> The complexity and the test failures behind the machine are staggering > I still find it hard to believe it works There was not much left of a hillside test sight when I first got to SS - it was melted down Cracked 6 in glass in the shelter maybe 600 ft away. One of my jobs to estimate the number of injector plates needed for Atlas engine program. The average life was 0.7 seconds before they melted or exploded. Now they can last for hours. Here is a bit of whats in those rockets like the turbo pumps to push the fluids into the injectors. 3 stage pumps, 100 to 422 psi, 422 psi to 4300 psi, 4300 to 7420 psi at 26,000 rpm and nearly 60,000 hp Another for the hydrogen at 6516 psi. Put 3 of them ( they are one unit) in a vehicle and you have 180,000 hp just to feed fuel and light-off the main engines (haahaha) engineeringatboeing.com science.ksc.nasa.gov