On Tue, 15 Oct 2002 22:27:43 -0400, "Sean Patrick Daly"
<[EMAIL PROTECTED]> wrote:

>In my never ending search for a longer lasting/highly reactive catalyst
>pack, I've noticed that the folks over at Boeing claim to have developed a
>catalyst bed that was tested to 10,285 seconds with 98% H2O2. I'm sure that
>this is not news to most of you, and may even seem like a normal number. To
>me... it seems outrageous.

Depends on the surface chemistry of the catalyst pack.  Some pack
designs expend the catalyst in order to be effective.  The longer
lasting designs, obviously, don't.

>http://www.boeing.com/defense-space/space/rdyne/whatsnew/042502_h2o2.html

>"The catalyst bed testing demonstrated that we can
>successfully create gas that can be used to drive gas
>turbines, provide thrust as a monopropellant, provide
>an oxidizer for bi-propellant engines, or function as an
>igniter for a rocket engine when combined with fuels
>like kerosene," said Lorier.

They claim to have used a small hot gas generator as an igniter for a
conventional liquid-liquid combustion chamber.  They imply one of the
liquids was peroxide, but they don't actually say it.

-R

--
"...And the last thing I remember is asking,
'What could go wrong?'"
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