On demand, non-halon, fire extinguishing systems
First Claim
1. A fire extinguishing system including:
- a non-halon fire suppressor charge formulated to produce complete conversion of the starting materials to fire suppressing gases N2, CO2, CO and water vapor in a quantity sufficient to decrease the available atmospheric oxygen in the hydrocarbon fuel tank to such an extent that the burning of hydrocarbon fuel can not be sustained within the tank;
said non-halon fire suppressor charge being selected from the group consisting of;
(A) H2 NNH3 NO3 and 1,1-(5'"'"'-tetrazolyl ) -guanyltetrazene hydrate in a molar ratio of from 10;
1 to 14;
1, and(B) NH4 NO3 and 1,1-(5'"'"'-tetrazolyl)-guanyltetrazene hydrate in a molar ratio of from 5;
1 to 7;
1.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and process for on-demand generation of inert, non-flammable gases and water vapor to decrease the available atmospheric oxygen in the ullage of a hydrocarbon fuel storage tank to a level that will not support combustion of the hydrocarbon fuel, is disclosed. One, or more, of a variety of non-Halon, fire suppressor charges are selectively contained in one or more gas generating cartridges. The gas generating cartridge(s), when activated, cause release of these charges to promote rapid chemical reactions and supply inert, non-flammable gases and water vapor to the tank ullage. Activation is accomplished in aircraft by, either pilot action or, by pressure and temperature sensors contained within the hydrocarbon fuel tank.
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Citations
4 Claims
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1. A fire extinguishing system including:
- a non-halon fire suppressor charge formulated to produce complete conversion of the starting materials to fire suppressing gases N2, CO2, CO and water vapor in a quantity sufficient to decrease the available atmospheric oxygen in the hydrocarbon fuel tank to such an extent that the burning of hydrocarbon fuel can not be sustained within the tank;
said non-halon fire suppressor charge being selected from the group consisting of; (A) H2 NNH3 NO3 and 1,1-(5'"'"'-tetrazolyl ) -guanyltetrazene hydrate in a molar ratio of from 10;
1 to 14;
1, and(B) NH4 NO3 and 1,1-(5'"'"'-tetrazolyl)-guanyltetrazene hydrate in a molar ratio of from 5;
1 to 7;
1. - View Dependent Claims (2, 3, 4)
- a non-halon fire suppressor charge formulated to produce complete conversion of the starting materials to fire suppressing gases N2, CO2, CO and water vapor in a quantity sufficient to decrease the available atmospheric oxygen in the hydrocarbon fuel tank to such an extent that the burning of hydrocarbon fuel can not be sustained within the tank;
Specification