On Fri, 23 Jan 2004, Alexander Mikhailov wrote:
> is it possible to use peroxide for regenerative
> cooling of byprop chambers?
Yes, that's the normal approach for such chambers, e.g. on Black Arrow.
You have to be careful not to get it *too* hot... but almost any coolant
will have a temperature limit, e.g. kerosene definitely does. Peroxide is
a really excellent coolant, dense and with a high specific heat, and much
of the propellant mass for a peroxide/kerosene engine is in the peroxide,
so this works very well.
The only real snag is that peroxide is highly incompatible with copper,
normally the chamber material of choice (by itself or in alloys) for
regenerative cooling, so you have to either use something else or at least
plate the cooling passages with something else.
Henry Spencer
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