[AR] Re: engine life (was Re: Nozzles for Amateur Solids)
- From: "Ray Rocket" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "ar0cketman" for DMARC)
- To: <arocket@xxxxxxxxxxxxx>
- Date: Wed, 14 Mar 2018 00:49:50 +0000 (UTC)
Troy Prideaux <troy@xxxxxxxxxxxxxxxxxxxxx> wrote:
How would that work? A vortex should increase the heat flux to the wall via
increased turbulence and pressure.
Vortex flow forces heavier, denser (cooler) materials to the outside.
Lowell Randall told me that Goddard injected water tangentially into the
chamber while using a pintle injector for propellants. The tangentially
injected water formed an insulating steam blanket. Mr. Randall showed me a
tiny biprop welded from common 2" black pipe fittings that used this method.
Unfortunately, I don't remember the flow proportions.
Other related posts:
