On Thu, 2004-06-10 at 17:13, George William Herbert wrote:
> I looked a lot at making a lot of little nozzles out > of a single plate either cast or machined with > micronozzles across the plate. Cast inconel plates > with the nozzles preformed aren't that expensive, > and can operate at the required temps for many > of the propellants. Probably including your > mixed monoprop. Stainless is probably even > good enough for that mixture.
Sounds really easy to fabricate, even with cooling passages... how bad
is the hit to performance?
-p
Doing it with cooling passeges sounds pretty challenging to me, but we are planning on fabricating a palte with 16 x 1" nozzles, which should be a direct performance comparison with our current 1 x 4" nozzles, if I keep the same expansion ratios. I don't expect it to have a significant performance loss, and we might even get some aeruospike expansion effect at high altitudes if we arrange the nozzles correctly.
John Carmack
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