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DDT video!!!

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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DDT video!!!

Unread postAuthor: SpudFarm » Sat Mar 15, 2008 4:13 pm

i did a easy search on youtube and got some results...
(look at other videos of this guy)[youtube]http://www.youtube.com/watch?v=D-dLjHJuFWQ[/youtube]
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Last edited by SpudFarm on Sat Mar 15, 2008 4:24 pm, edited 1 time in total.
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Unread postAuthor: LikimysCrotchus5 » Sat Mar 15, 2008 4:15 pm

Link doesnt work
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4SPC, My 4" piston 3" porting cannon
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Unread postAuthor: POLAND_SPUD » Sat Mar 15, 2008 4:20 pm

oh jesus just remove the last 3 letters 'url'

EDIT
it's ok now
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Unread postAuthor: potatoflinger » Sat Mar 15, 2008 4:27 pm

Wow, that's pretty impressive!
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Unread postAuthor: brogdenlaxmiddie » Sat Mar 15, 2008 4:27 pm

wow..... That was pretty damn amazing :D I like how the flag in the back was like POOSHH everytime it fired....
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Unread postAuthor: Hotwired » Sat Mar 15, 2008 4:33 pm

Thats a hell of a test rig. Looks like a porcupine.

Interesting stuff. You can certainly see that the detonation is significantly more violent than the deflagration.

*edit: thats not just a test rig. It's a pulse detonation engine :shock:
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Last edited by Hotwired on Sat Mar 15, 2008 4:36 pm, edited 2 times in total.
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Unread postAuthor: SpudFarm » Sat Mar 15, 2008 4:33 pm

larda has build one also (that smart bastard JK)
i just though (barrel on that thing)
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Unread postAuthor: D_Hall » Sat Mar 15, 2008 4:42 pm

Meh... Try this one on for size. ;) 'Tis a little toy we played with at the office a few years ago...

Image

link to video
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Unread postAuthor: SpudFarm » Sat Mar 15, 2008 4:51 pm

wow that was nice... :)
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Unread postAuthor: SpudFarm » Sat Mar 15, 2008 5:25 pm

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Unread postAuthor: DYI » Sat Mar 15, 2008 6:03 pm

It seemed that the first video wasn't operating at anywhere near a high enough frequency to generate useful thrust. But it was probably just tuned down somehow.

D_Hall's device, on the other hand... :twisted:
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Unread postAuthor: D_Hall » Sat Mar 15, 2008 6:12 pm

To be fair, 'tweren't my device. 'Twere Pratt & Whitney's device (we just got to do some testing for P&W).
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Unread postAuthor: SpudFarm » Sat Mar 15, 2008 6:25 pm

DYI i said look at the other vids of that guy...
there is a hydrogen/oxygen at 25HZ there..
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Unread postAuthor: potatoflinger » Sat Mar 15, 2008 7:42 pm

I like this video a little better though...
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Unread postAuthor: Matheusilla » Sat Mar 15, 2008 7:49 pm

Holy friggin crap! Now there's some engineering! I've never seen anything so efficient.
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