[AR] Re: coaxial injectors, venturi effect
- From: Robert Steinke <robert.steinke@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Fri, 29 Jan 2021 07:42:20 -0800
On Fri, Jan 29, 2021 at 7:28 AM Henry Spencer <hspencer@xxxxxxxxxxxxx>
wrote:
On Fri, 29 Jan 2021, Peter Fairbrother wrote:
...I was wondering whether this might allow you to only use one high
pressure pump for the LOX, and use the Venturi effect (if that is the
correct name) to pump the fuel.
The term you're looking for is not "venturi" but "jet pump".
Another issue is that you wouldn't want the propellants to burn until they
exit the jet pump at high pressure, but they would be mixed in the low
pressure region inside the pump so there might be flashback problems.
As an exercise for the reader, design a dieseling jet pump where the
propellants autoignite from the temperature rise in the pressure recovery
section of the pump.
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