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Quicker burst disc loading

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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Quicker burst disc loading

Unread postAuthor: CS » Wed Sep 12, 2012 1:26 pm

Looking for ideas that improve the speed of loading a burst disc. The main issue is locking the joint under compression so that it will not come apart under combustion.

Two designs I've found so far:

http://i250.photobucket.com/albums/gg26 ... G00352.jpg

^comment: Those fittings would be expensive for the six chambers I'm planning.

http://i499.photobucket.com/albums/rr35 ... achiso.jpg

^comment: No locking mechanism, I suppose the hydrualic pressure would hold the joint closed under pressure, however I would only be able to use pneumatic cylinders... Those would hold under pre-ignition mix, but not the combustion.

Any ideas?
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 12, 2012 2:11 pm

Any ideas?


Replace the burst disk with a friction seal if you're using hard projectiles.
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Unread postAuthor: Crna Legija » Thu Sep 13, 2012 6:48 am

use hydraulic quick connect!
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Unread postAuthor: CS » Thu Sep 13, 2012 5:53 pm

The picture shows what I'm thinking of. Problem being that all six chambers have to be precisely aligned or not all the joints will seal. If it did happen adding shims might correct mis alignment.

Some old man tried telling me I've never had an orginal idea, I'm starting to believe.
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