"Damon Hill" wrote in message
31...
"Danny Deger" wrote in
:

Did anyone see the Delta Heavy launch? It had/has lots of unburned
hydrogen around the booster that ignites at lift off. It looks like
the darn thing is going to blow up.

That seems to be part of the RS-68s design, using lots of hydrogen
to chill down the engines just prior to ignition. It was anticipated
and allowed for with insulating blankets and inert gas purges, but
it sure looks like a Bad Moment In Launch History until it lifts off.
I've heard a hint that Boeing/Rocketdyne is working on the problem.

--Damon


I have recently "retired" (see my web site) from NASA and the word on the
street at NASA was the first thing Boeing would have to do to man rate the
Delta Heavy is to have it NOT look like it is going the blow up at lift off.

--
Danny Deger

NASA offered me $15,000 to take down my web site. Take a look and see why.
www.dannydeger.net