F - Mech Eng,Light,Heat,Weapons – 41 – D
Patent
F - Mech Eng,Light,Heat,Weapons
41
D
89/16
F41D 7/06 (1985.01)
Patent
CA 1266391
IN-LINE ANNULAR PISTON FIXED BOLT REGENERATIVE VARIABLE CHARGE LIQUID PROPELLANT GUN WITH VARIABLE HYDRAULIC CONTROL OF PISTON Abstract of the Disclosure A regenerative liquid propellant gun structure in which the differential area piston is annular, has an open peripheral cylindrical skirt extending away from the combustion chamber to define a propellant reservoir, and has an aperture in the piston head permitting over- running of a fixed bolt. The fixed bolt is cylindrical with an enlarged band to fit the aperture to block flow of peopellant until firing and to define with the edge of the aperture a variable annual orifice for propellant injection as the piston moves. There is a second free piston overruning the bolt having a forward portion mating with both the inside of the differential area piston and the exterior of the cylindrical skirt so that the skirt constitutes a piston in a circular deshpot in the second piston. The second piston also contains a fluid accumulator, fluid conduit means interconnecting the accumulator and the dashpot and means for changing the cross sectional area of the fluid conduit means to provide a variable hydraulic resistance to the differential area piston during firing.
503013
Company General Electric
Eckersley Raymond A.
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