Fairly interesting concept they have here - maybe not on the chemistry side of things, but they have a very nice implementation of a semi-automatic combustion gun at least!
For those that haven't heard of it yet - the LVVWS, or Lund Variable Velocity Weapons System is a gun that seemingly just use electrolysis to "split" water and provide a variable amount of propellant to a projectile which is in most cases - a rubber bullet. They are advertising this on the basis that it can be a less-than-lethal weapon, and instantly convert to a, well lethal weapon?
take a look on their website for yourself!
http://lundtechnologies.com/products.html
and a patent:
http://www.freepatentsonline.com/7254914.pdf
Interesting...
One possible benefit of the electrolysis is that it supplies both the oxidizer and fuel, so venting the combustion chamber may not be as much of an issue... (although looking through the patent, it seems they address the exhaust gasses)
Another benefit of electrolysis is that it can power a small onboard fuel cell, which can then perform even more electrolysis and it will never need batteries! PM MACHINE!!!! [/boyntonstu talk]
Just so everyone is clear - the fact that it uses "browns gas" or whatever you want to call it is not the interesting part (although using onboard electrolysis is clever!), the fact that it is a repeatable self-contained unit is!
