Ammunition and explosives – Igniting devices and systems
Patent
1975-12-18
1976-11-30
Brown, David H.
Ammunition and explosives
Igniting devices and systems
102 81, 102 90, F42B 2516, F42C 500
Patent
active
039942260
ABSTRACT:
A flueric initiator for a fuel-air explosive bomb possesses a sealed hous containing a pressurized gas, a plurality of igniter devices and a means for rupturing the housing and ejecting the igniter devices into the atmosphere. Each igniter device consists of a small gas container, a resonance tube, and explosive charge adjacent to the closed end of the resonance tube, and a nozzle connected to the gas container and communicating with the housing plenum through one or more vents. The housing is initially charged to a pressure considerably higher than the functioning pressure of the nozzle-resonance tube combination.
When the sealed housing is ruptured and the igniter devices are ejected after bomb impact and fuel dispersal, the pressure outside the igniter devices is reduced to ambient pressure, causing the pressurized gas in the gas container to flow out through said nozzle and impinge upon the open end of the resonance tube, thereby reducing the gas pressure until it reaches the level at which resonance tube heating occurs. This rapid heating takes place only after a well-defined, predetermined, settable time delay, detonating the explosive charge and consequently the fuel-air cloud.
REFERENCES:
patent: 3570401 (1971-03-01), Euker
patent: 3596603 (1971-08-01), Gryting et al.
patent: 3630150 (1971-12-01), Rakowsky
patent: 3630151 (1971-12-01), Rakowsky
patent: 3672300 (1972-06-01), Axelson et al.
patent: 3863571 (1975-02-01), Campagnoolo et al.
patent: 3938438 (1976-02-01), Anderson et al.
Corrado Anthony P.
Marchese Vincent P.
Rakowsky Edward L.
Brown David H.
Edelberg Nathan
Erkkila A. Victor
The United States of America as represented by the Secretary of
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