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Hydrogen spud gun

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Unread postAuthor: squeaks » Mon Jan 22, 2007 5:15 pm

Okay, BC, we won't get in a squeaking fight but I have to make two small points.

#1 electrolysis is a very efficient energy conversion, with some getting appr. 90% efficiency. Plus hydrogen COULD(just a guess) potentially be much more powerful than propane.

#2 The skin theory is just a theory. I would say to take the mythbusters' word as gospel would be stupid. On the other hand there are several good points for either side. On one hand, cotton burns really fast whereas the skin for the hindenburg just had the dope on it(which to my knowledge doesn't burn very fast). Now as to that jacobs ladder thing, anything will burn in a jacobs ladder. You could put concrete in a jacobs ladder and it'll burn. Also, it is rediculous to say that the hydrogen in the hindenburg did not ignite. The second that the skin burnt to expose the hydrogen to the air it would have ignited. On the other hand, the effect the hydrogen had on the blimps crash/explosion is unknown and probably will forever remain as such. Also, the mythbusters did show that the skin could create a small scale thermite reaction. It may have been larger if the mythbusters had the dope formula wrong. The main lesson behind the hindenburg is a simple one. No matter what don't fill your blimp with explosive and paint it with something that might just accelerate that.

Whoa, I just had a revelation. I wonder if the hindenburg was filled with helium would it have smothered the fire? Thermite does oxidize itself, but was there a great enough thermite concentration on the hindenburg? Too many questions, too little color on news reel footage. Anyone got a time machine :?:
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Unread postAuthor: medievalman » Mon Jan 22, 2007 6:32 pm

Yeah, I might be able to send you one, but the shipping would cost a fortune! This is what the beast looks like:

:computer: :computer: :computer:
:clock: :iroc: :clock:

You Like? lol!
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Unread postAuthor: BC Pneumatics » Mon Jan 22, 2007 8:19 pm

#1.. Not sure what point you are making... I agree with that, thought it still is far from free.

#2 The reason they used a Joccob's Ladder was to test the theory that it was ignited by a spark jumping sections of the frame. After they colored the film, many people (That had witnessed the real deal) said that the colors that support the 'Thermite Theory' looked most like the even itself.
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Unread postAuthor: Mic Whitey » Mon Feb 12, 2007 5:42 pm

go for it. its sweet. i've done it. got the hydrogen from school. use a far away electric ignitor. and boom. i blew up one gun, too much boom.
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Unread postAuthor: Kenny_McCormic » Mon Feb 12, 2007 11:13 pm

or aluminum abs seems to hold up better than pvc in a combustion also
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