[AR] Re: Fwd: Pintle Injector Design References
- From: "Ed LeBouthillier" <codemonky@xxxxxxxxxxxxx>
- To: <arocket@xxxxxxxxxxxxx>
- Date: Sat, 24 Jan 2015 12:20:28 -0800
Clearly, I'm in the dark when it comes to pintle injectors. Can anybody
provide a distinction?
Here's a better definition from the site you mentioned:
http://britishreactionresearch.blogspot.com/2012/11/shear-coaxial-injector-experiments.html
It says:
"The basic mechanism of coaxial atomisation is stripping of the liquid
stream by the higher velocity co-flowing gas. "
So, as they point out, in the coaxial shear injector, two coaxially-flowing
propellants interact at a surface in such a way that the turbulence caused
by their differential speed causes atomization.
The point is that the two streams are completely coaxially (and axially)
introduced into the combustion chamber.
However, in the pintle injector, one stream is usually axial, but the other
stream is introduced with a tangential component; therefore, the two streams
impinge. Again, the mixing mechanism is the impingement.
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