This invention relates to a forest,
terrain and urban fire fighting device and method, and more particularly, to a fire extinguishing
system and method offering
reduced risk of
fire spread and safety of firemen. This extinguishing device consists of an encapsulated cryogenic
projectile with a
payload of solidified and frozen mixture of
carbon dioxide,
nitrogen, combination of gases and compacted
solid extinguishing agents. These strategically located and cryogenically stored devices are launched at the
outbreak of fire, aerially or terrestrially over a blaze. An embedded explosive charge is detonated at a predetermined and optimum height causing the solidified gases / compacted
solid extinguishing agents to be dispersed instantaneously and forcefully over targeted and specified areas. The release of
high pressure, low temperature
oxygen exclusion gases penetrate the fire from above,
chills the substrate and extinguishes the fire. As
carbon dioxide is heavier than air it hangs as a cloud over the extinguished substratum effectively preventing reignition.
Fly ash, fine quarry dust or any
solid or semisolid extinguishing agent can also be made to disperse under force over the fires in the same mode which cuts off the
oxygen supply to the burning substrates. By effectively checking and cooling the fuel complex substrate by successive pulverizations as needed this invention enables a low cost, scalable, and effective urban,
terrain and forest fire intervention / extinguishing process.