[AR] Re: Papers/Resources on Film Cooling
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Sat, 3 Oct 2020 22:59:54 -0400 (EDT)
On Sat, 3 Oct 2020, roxanna Mason wrote:
Robert Goddard rocket engine exclusively film cooled and why his ISP was
only in the mid 100's for LOx/gasoline. For some unknown reason he never
employed regenerative cooling and I doubt he was too smart not to co
invent the concept but maybe he didn't think about it.
Between Goddard's secrecy fetish and his lone-wolf operation, there's
precious little information on his thinking and the rationale for his
design decisions, alas.
I'd guess that trying to do regen with gasoline would quickly crud up the
cooling passages with polymerization products. And you wouldn't be able
to count on two batches in a row having exactly the same composition.
Henry
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