At 07:06 PM 5/11/2004 -0600, you wrote:
Hey everyone,

Just wanted to let you know there is a new update on the igniter project posted, with
some pictures:


http://www.et.byu.edu/groups/sdc/IgniterProject/updates/11May04.html

We'll probably have some more to post in a week or so. Any feedback is welcome!

~Jonathan Goff
 BYU Space Development Club

One comment :


"From what we've seen so far, most of them run from $200+, and they also are mostly designed for very low outlet pressures (<150psi). "

I would suggest that designing experimental rockets for 150 psi feed pressures is a good idea. Lots of industrial stuff is designed for 150 psi working pressure, and you can save a lot of money over going to higher pressure stuff. You only wind up with a 2:1 expansion ratio or so, but all the other rocket lessons are going to be the same, and if anything does pop, it will be a less violent pop...

John Carmack



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