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The human cannonball principle is the subject of a patent application by the US Defense Advanced Research Projects Agency, whereby a rail-guided chair driven by compressed air is brought to a sudden stop, propelling the special forces member, police officer or firefighter onto the roof of a tall building. [8] [9]
In industry, however, they are illegal for compressed air applications—if they are damaged under pressure the plastic can fail explosively. [ 11 ] ABS (Acrylonitrile butadiene styrene) : Another popular plastic piping material, more expensive and less common than PVC but available in the same sizes and pressure ratings.
A ping-pong ball moving at a high enough speed can inflict a lethal injury. Busted Adam and Jamie began by hitting balls by hand with a paddle and achieved a maximum speed of 75 mph (121 km/h). Adam built a compressed-air launcher and got the ball up to 140 mph (230 km/h) at a pressure of 95 psi (660 kPa).
The AL-52 is a compressed air launcher of British origin manufactured by Plumett Ltd. The AL-52 is capable of launching grappling hooks for the likes of special forces and line throwing. [ 1 ] The AL-52 can also be mounted onto the ground for launching heavier payloads.
The FN 303 uses compressed air to fire projectiles from a 15-round drum magazine. It is designed to incapacitate the target through blunt trauma without causing critical injuries, and is most widely used for riot control and other kinds of combat where lethal weapons should be avoided.
Dynamite gun, any of a class of artillery pieces that use compressed air to propel an explosive projectile; FN 303, a semi-automatic less-lethal riot gun; Holman Projector, a naval anti-aircraft weapon; M61 Vulcan, a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon