[AR] Re: Nozzle shapes
- From: Alexander Mikhailov <avmich@xxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Tue, 12 Nov 2013 15:29:05 -0800 (PST)
As I understand, single component injectors are more popular in USA, and
comparatively double component injectors - in Russian engines.
SpaceX's Merlin uses pintles.
A very interesting case is F-1 where the main task was to avoid oscillations,
not improve combustion, and the injector pattern was essential...
On Tuesday, November 12, 2013 3:24 PM, George Herbert
<george.herbert@xxxxxxxxx> wrote:
On Tue, Nov 12, 2013 at 2:51 PM, Alexander Mikhailov <avmich@xxxxxxxxx> wrote:
....
>And one more thing - it's strange to hear that US, with the tradition
>of using pintle injectors, have more optimal combustion process, while
>Russian injectors commonly have many much smaller injectors, matched
>by flow. Pintle should have other advantages, I guess...
The US pintle engines were mostly involved with the Lunar Module descent engine
(LMDE) and its derivatives (which ended up in the TR201 which was classic
Delta's second stage engine),
Nearly all flown US engines are classic injectors.
--
-george william herbert
george.herbert@xxxxxxxxx
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