Author Topic: Western ORSC and the P111 Rocket Engine  (Read 410 times)

Offline MegabytePhreak

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Western ORSC and the P111 Rocket Engine
« on: 06/02/2018 07:15 PM »
I saw the german P111 engine from the late 50s mentioned in the context of the Raptor oxidizer turbopump arrangement.
https://forum.nasaspaceflight.com/index.php?topic=41363.msg1826739#msg1826739

I found some description of it in this JAXA/Astrium presentation (page 9 of the PDF).
https://forum.nasaspaceflight.com/index.php?topic=41363.msg1826739#msg1826739

It is described as LOX-Kerosene staged combustion, with an oxygen rich preburner. What is interesting to me is that by most accounts, Oxygen-Rich Staged Combustion (ORSC), was considered impractical by western engineers until after the fall of the Soviet Union. To the point that engineers were disbelieving of the performance figures for the NK-33 and RD-180 when they were first communicated.

Does anyone know more about this engine and and it's history? Why didn't it serve as proof positive that ORSC was possible? Were there unresolved issues with the engine not described in the slides above? Does the short preburner-chamber path reduce the difficulty? Perhaps the engine was not known in the US at the time?

Online Archibald

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Re: Western ORSC and the P111 Rocket Engine
« Reply #1 on: 06/03/2018 06:13 AM »
... that ackward moment when you realize that Jeff Bezos personal fortune is far above NASA annual budget... 115 billion to 18 billion...

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