Basic valveless pulsejet question

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ngdbud@hotmail.com - 08 Mar 2006 00:12 GMT

For rear facing intake valveless pulse jet, Whats the rule of thumb for
length of the combustion chamber compared to length of the entire
engine. Does anybody have some good tips on designing theese types of
engines?

Thanks in advance!

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robin.hague@uktic.org - 08 Mar 2006 15:32 GMT

I'm sure I've seen some detailed plans on the web in the past, I shall
post the link here if I can find it. Otherwise it would probably be
possible to measure the relative sizes from one of the many pictures on
the web and then apply them to the tube sizes you have handy. They
made one on scrapheap challenge as well in the last year or so. One
team made a gas turbine from a turbocharger and the other built a
lockwood pulse jet. Both successfully powered small Karts!
Best
Robin

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stans4@prolynx.com - 08 Mar 2006 16:04 GMT

> I'm sure I've seen some detailed plans on the web in the past, I shall
> post the link here if I can find it. Otherwise it would probably be
[quoted text clipped - 5 lines]
> Best
> Robin

This guy was the tech support behind the cameras on that episode:
http://aardvark.co.nz/pjet/

Looks like he's got engineering data for sale, too. Hope the O.P.'s
neighbors are a looong ways away...

Stan

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Jack - 12 Mar 2006 21:40 GMT

http://www.aardvark.co.nz/pjet/

> For rear facing intake valveless pulse jet, Whats the rule of thumb for
> length of the combustion chamber compared to length of the entire
> engine. Does anybody have some good tips on designing theese types of
> engines?
>
> Thanks in advance!

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Model Forum / General / Rockets / March 2006

Basic valveless pulsejet question