초록 ▼

An igniter which is removably insertable in a rocket motor nozzle throat. The igniter includes a sleeve which has a body portion and a plurality of flexible and frangible tab members extending axially from one end of the body portion and spaced circumferentially thereabout and which have first porti

An igniter which is removably insertable in a rocket motor nozzle throat. The igniter includes a sleeve which has a body portion and a plurality of flexible and frangible tab members extending axially from one end of the body portion and spaced circumferentially thereabout and which have first portions which in combination define a diameter which is greater than the nozzle throat diameter. The frangible portions of the tab members in combination define an outer diameter which is substantially equal to the throat diameter. The body portion of the sleeve has a diameter which is greater than the throat diameter. The sleeve is insertable in the nozzle throat by flexing the tab members so that the first portions clear the throat and so that the frangible portions of the tab members are disposed in the throat. The tab members, in combination, have an inner diameter which is substantially equal to the inner diameter of the body portion of the sleeve. After the sleeve has been inserted in the throat, an igniter tube having a diameter substantially equal to the inner diameter of the sleeve is inserted into the sleeve and secured thereto thereby forcing the tab members into their original positions to lock the igniter into position during the ignition process. When the pressure in the rocket motor chamber reaches a predetermined pressure, the frangible portions of the tab members break so that the igniter is ejected from the nozzle.

대표청구항 ▼

An igniter removably insertable in a rocket motor nozzle throat, the igniter comprises a sleeve having an axis and a generally cylindrical aperture means extending axially therethrough for insertion of an igniter tube therein, said sleeve comprises a body portion and a plurality of tab members exten

An igniter removably insertable in a rocket motor nozzle throat, the igniter comprises a sleeve having an axis and a generally cylindrical aperture means extending axially therethrough for insertion of an igniter tube therein, said sleeve comprises a body portion and a plurality of tab members extending axially from one end of said body portion and spaced apart circumferentially thereof, a first portion on each said tab member which extends radially outwardly such that a diameter defined by the plurality of said first tab member portions in combination is greater than a diameter of the nozzle throat, said tab members being composed of a material which allows said tab members to flex whereby said first tab member portions are movable radially inwardly so that said plurality of said first tab member portions may be inserted through the nozzle throat, said body portion having a diameter greater than a diameter of the nozzle throat, and the igniter further comprises an igniter tube containing ignition material which igniter tube is removably insertable in said sleeve aperture means and removably attachable to said sleeve, means for igniting said ignition material, and frangible means for effecting separation of said plurality of first tab member portions from said sleeve at a predetermined pressure in the rocket motor.