Extendible wafer igniter with perforations adjacent the foot por

Details Extendible wafer igniter with perforations adjacent the foot por Extendible wafer igniter with perforations adjacent the foot por

1983-11-17

1986-03-11

Nelson, Peter A.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

102205, 102287, 102380, 60256, F42B 1510

Patent

active

045746990

ABSTRACT:
A closed urethane cylindrical case includes a mounting base or foot which runs parallel to the axis of the case and is bonded to the surface of the propellant grain of a full head-end-web rocket motor. Contained within the case are one or more spaced tube initiators and concentrically positioned discs or webs of high energy propellant. Flaming gases resulting from actuation of the tube initiators and consequent burning of the propellant wafers are projected over the surface of the rocket motor propellant from a plurality of nozzle ports that are provided in the cylindrical case, in the quadrants thereof adjacent the surface of the rocket motor propellant. Cylindrical case length and the number of tube initiators and propellant wafers including their spacing can be selected as required to achieve a desired mass flow rate.

REFERENCES:
patent: 3143853 (1964-08-01), Sobey
patent: 3324656 (1967-06-01), Bradshaw
patent: 3332353 (1967-07-01), Burkardt et al.
patent: 3392673 (1968-07-01), King
patent: 3581662 (1971-06-01), Grebert et al.
patent: 3667396 (1972-06-01), Barrett
patent: 4378674 (1983-04-01), Bell
patent: 4498292 (1985-02-01), White
patent: 4503773 (1985-03-01), Bolieau

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