Variable aperture annular nozzle for rocket motor igniter

Details Variable aperture annular nozzle for rocket motor igniter Variable aperture annular nozzle for rocket motor igniter

1981-03-26

1983-04-05

Croyle, Carlton R.

Power plants

Combustion products used as motive fluid

Combustion products generator

60254, 60256, 60271, 102202, F02C 726, F02K 100, F02K 995, F02K 997

Patent

active

043786740

ABSTRACT:
A single port rocket motor igniter nozzle features an adjustable throat or annulus that is formed by a tapered flange and an opening in an igniter body that contains a propellant charge, the position of the flange relative to the opening being adjustable to vary the throat area by a calibrated central shaft. The igniter allows rapid evaluation of propellant grain designs and nozzle throat areas, and as a result, enables the faster development and assembly of a less expensive igniter that is operative to produce at optimum pressure and burning rate, and to effectively propagate, the high temperature gases that are needed for rocket motor propellant ignition.

REFERENCES:
patent: 571940 (1896-11-01), Binford
patent: 2481059 (1949-09-01), Africano
patent: 2870599 (1959-01-01), Long
patent: 3167912 (1965-02-01), Ledwith
patent: 3234731 (1966-02-01), Dermody

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