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Posted: Sun May 27, 2007 9:06 pm
by sandman
if this was the next task for the next competition, then i would enter if i could get the funds in time
Posted: Tue May 29, 2007 12:35 pm
by joannaardway
markfh11q wrote:I find a lot of these dilemmas can be sorted out by taking a look at the modern combustion engine. Have you considered water cooling? A thin reservoir around the chamber, connected to a pump and then a coiling of 1/4" copper tubing in front of a fan, should be able to do the job. Keep in mind that it'd still get pretty hot, though. 8)
I have considered water cooling - it has some problems, so I'm wondering if anything else could do better though.
Posted: Tue May 29, 2007 2:53 pm
by sandman
well, i just made this up um what about using compresses air aroung the barrel and with every shot let some out so it will cool down
P1V1=P2V2
Posted: Tue May 29, 2007 3:15 pm
by mark.f
I believe you mean P<sub>1</sub>/T<sub>1</sub> = P<sub>2</sub>/T<sub>2</sub> ?
Probably would need a very high pressure to make this work. You could make a pressure-rated enclosure around the gun on the "low" side of a freon pump to use the same basic principle, with higher efficiency.
EDIT: what's with my damn formatting today?!?!?
Posted: Tue May 29, 2007 4:12 pm
by sandman
lol, yep i did, i just forgot the half that you posted,(the part i needed).
Posted: Tue May 29, 2007 4:48 pm
by clide
Air cooling would probably be most simple and still be fairly effective. Just have some fins coming out radially from the chamber and a fan to blow across them. You could have some type of heat insulator around the outside of the fins so you can hold onto it.