Comments on: Pintle Injector Rocket Engines http://blog.nss.org/?p=1900 Blogging for the creation of a spacefaring civilization Wed, 22 May 2013 04:13:29 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Martha Adams http://blog.nss.org/?p=1900&cpage=1#comment-6433 Martha Adams Mon, 06 Sep 2010 03:46:23 +0000 http://blog.nss.org/?p=1900#comment-6433 When I looked at the description of the pintle injector, I saw a thing so simple and effective I had to think a little for it to sink in. I fetched a copy of the TRW paper, very interesting reading. This shows large powerful machines can be simple, the developmental end point you are always trying for. Too bad we can't do a spacesuit like that -- or can we, somehow? How is the noise spectrum from these pintle engines different from that of earlier varieties? I've an intuitive feeling the sound is very different, markedly lower amplitude in the higher frequencies. And I'd look for the pintle engine to be less vulnerable to longitudinal ship oscillation. Titeotwawki -- Martha Adams [2010 Sep 05] When I looked at the description of the pintle injector, I saw a thing so simple and effective I had to think a little for it to sink in. I fetched a copy of the TRW paper, very interesting reading. This shows large powerful machines can be simple, the developmental end point you are always trying for. Too bad we can’t do a spacesuit like that — or can we, somehow?

How is the noise spectrum from these pintle engines different from that of earlier varieties? I’ve an intuitive feeling the sound is very different, markedly lower amplitude in the higher frequencies. And I’d look for the pintle engine to be less vulnerable to longitudinal ship oscillation.

Titeotwawki — Martha Adams [2010 Sep 05]

]]> By: Martijn Meijering http://blog.nss.org/?p=1900&cpage=1#comment-6025 Martijn Meijering Sun, 01 Aug 2010 22:08:39 +0000 http://blog.nss.org/?p=1900#comment-6025 There's a great TRW paper about pintle injectors at the following URL: http://smartdata.usbid.com/datasheets/usbid/2001/2001-q1/pintleenginepaperaiaafinal.pdf TRW Pintle Engine Heritage and Performance Characteristics It includes some great pictures of water flowing through the injector (outer flow only, innerflow only, combined flow), illustrating the principle very nicely. There’s a great TRW paper about pintle injectors at the following URL:

http://smartdata.usbid.com/datasheets/usbid/2001/2001-q1/pintleenginepaperaiaafinal.pdf
TRW Pintle Engine Heritage and Performance Characteristics

It includes some great pictures of water flowing through the injector (outer flow only, innerflow only, combined flow), illustrating the principle very nicely.

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