| 摘要 |
A portable compressed gas foam system having a rocket engine, fueled with hydrogen peroxide and a suitable propellant, which produces exhaust gases. The exhaust gases are injected into a water tank, aerating the water and pressurizing the water tank. Foam concentrate may be added to the tank or separately in a mixing stage and is aerated by the aerated and pressurized water. The aeration produces bubbles in the foam and entrains exhaust gas within the bubbles. The aerated foam can then be sprayed onto a fire through a foam injection nozzle, extinguishing the fire both by wetting the burning materials and by smothering it by reducing the amount of oxygen available to burn. The invention may also be adapted for use in a firehose or in an underslung bucket. |
