Here is another suggestion (blue arrow up, green arrow towards target): ustovaBrzda.png This option lacks the drawbacks of already stated options: 1/ Nobody behind you will get blast of gases as in second option, or get hit by an object twice the mass of your bullet as in fist option 2/ It will be m...

The first option would work. As for second option, I don't see any reason why Venturi effect wouldn't work. Something like this would work, too: But it requires more then plumbing equipment. So does the adapter piece.

Consider a lever instead of a pull pin to release the mechanism, as the friction from the force of the "pressurized medium" will make it difficult to open. OK, little clarification. By "connected to the (same) pressure tank" I meant the inlets can be, but don't have to be, connected to the same tan...

Do you have the material facilities to contain the forces involved? Not yet. I can imagine a very "steampunk" looking looking device made mostly of brass and copper with gauges everywhere. That would be super cool, albeit steel seems more practical. I designed extra fast valve for starter: valve.pn...

I have seen the principle in action as a child. It was at camping site fire, at which a can of paraffin wax was resting and heating up. After the wax spontaneously ignited it was allowed to heat up some more, and than a can of water on long handle was poured into it. The result was mushroom shaped f...

Hello, I didn't want my (re)discovery and adjustment to be forgotten, so I publish it here and now: ArchimedovoDelo.png ********************************* I suppose there were problems in ancient times regarding materials. The cannon was probably never fired with a bullet. However it seems probable i...