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An airborne foam delivery apparatus is adapted to be carried as a slung bucket beneath a helicopter to deliver a high volume of fire suppressant foam for wildland firefighting. The delivery apparatus comprises a liquid tank for holding a foamable liquid. A support frame extends downward from the liq

An airborne foam delivery apparatus is adapted to be carried as a slung bucket beneath a helicopter to deliver a high volume of fire suppressant foam for wildland firefighting. The delivery apparatus comprises a liquid tank for holding a foamable liquid. A support frame extends downward from the liquid tank to support the liquid tank above the ground during ground operations. Three nozzles are directed generally downwardly from beneath the liquid tank within a protective apron. A liquid valve is positioned between the liquid tank and the each nozzle. Each liquid valve is remotely operable to allow passage of the foamable liquid through the corresponding nozzle. A pressure regulator is connected to receive compressed air from gas containers mounted within the liquid tank, and to controllably discharge the compressed air into the liquid tank to maintain a positive regulated pressure within the liquid tank. The positive pressure expels the foamable liquid through tile nozzles when tile liquid valves are operated. An aerating screen is positioned beneath each nozzle to aerate and foam the foamable liquid as it emerges from the nozzle.

대표청구항 ▼

An airborne foam delivery apparatus for operation beneath an aircraft to deliver a high volume of fire suppressant foam, the foam delivery apparatus comprising: a liquid tank having an interior for holding a foamable liquid, the liquid tank being capable of withstanding a positive internal pressure,

An airborne foam delivery apparatus for operation beneath an aircraft to deliver a high volume of fire suppressant foam, the foam delivery apparatus comprising: a liquid tank having an interior for holding a foamable liquid, the liquid tank being capable of withstanding a positive internal pressure, the liquid tank being adapted to be carried by the aircraft; a nozzle which is directed downwardly from the liquid tank; a liquid valve operably interposed between the liquid tank and the nozzle, the liquid valve being operable between open and closed positions to allow passage of the foamable liquid through the nozzle; a gas container which is chargeable with compressed gas; a pressure regulator connected to receive the compressed gas from the gas container, the pressure regulator having an output which is in fluid communication with the liquid tank interior to controllably discharge the compressed gas from the gas container into the liquid tank, the pressure regulator maintaining a positive regulated pressure within the liquid tank to expel the foamable liquid through the nozzle when the liquid valve is in its open position; and protective apron extending downwardly from the liquid tank and encircling the nozzle, the protective apron having an upper portion which is formed by a screen to allow air to pass therethrough.