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Vera suffers a setback. :(

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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Unread postAuthor: jeepkahn » Wed Aug 12, 2009 2:04 pm

poultry hell, this thing can launch the other white meat.... lol... when pigs fly...lol

I crack me up sometimes...
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Unread postAuthor: ramses » Wed Aug 12, 2009 3:20 pm

john bunsenburner wrote:A x meter long spudgun that generates several thousand psi apon firing, and that most probably cost sever hundreds of thousands of dollars to build is so much more fun!


IIRC, 20 meters long, generating only around 500psi, with a budget of I think $10k

john bunsenburner wrote:Hmm...if you guys use plastic projectiles please use a long rubber dart once and get your self the record for largest pneumatic dildo ever built, ask your boss if that would be a fair deal.


maybe d_hall could put that on his other website*

*not a link to his actual website, you perverts!!!
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POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
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Unread postAuthor: john bunsenburner » Wed Aug 12, 2009 4:20 pm

Just considered it wouldn't work, Vera is a chick...

Hmm, I say make a vacume gun with a rubber barrel...
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Unread postAuthor: D_Hall » Wed Aug 12, 2009 4:47 pm

c11man wrote:i know hybrids are awesome but why was this desided to be a hybrid cannon? and what "x" is it?

it's only a 2X(*), but I need heated gases to push the mass flows through the breech. Cold gas won't do it.


(*) Nominally. When we hydrostat the chamber we'll have strain gages all over it to see how it responds. If it does well, we may be able to take it to 3X.
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Simulation geek (GGDT / HGDT) and designer of Vera.
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Unread postAuthor: D_Hall » Sat Aug 15, 2009 2:05 pm

And yesterday Vera suffered another setback. :evil:

I'm not entirely sure what happened, but there's been a policy change. Our welders are no longer cleared to operate in my area and Vera is too large to take down to their area (she won't fit through the door).

So right now work is at a standstill until we can get some paperwork in place. The paperwork shouldn't be a big deal, but it will take some time to get in place.

ARGH!

Fracking safety Nazis.



edit: @Ramses.... Budget is a funny thing. I've spent close to $20k on Vera ($5k just on nuts and bolts!) but that's because I had a lot of spare parts at my disposal and my labor costs are coming from a different pot of money. Were somebody to build her from scratch and have to pay for the labor, she'd probably cost on the order of $400k.
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