Research/Patents/US 4928571
US 4928571Tier 1 — UAP Program Assignee

LIQUID PROPELLANT GUN

Assignee

General Dynamics

Filed as: GENERAL DYNAMICS ARMAMENT SYSTEMS, INC.

Filed

Aug 10, 1989

Granted

May 29, 1990

Location

SHELBURNE VT US

Abstract

A liquid propellant gun system has an annular differential piston journaled for telescopic movement with respect to an annular control valve and to the chamber of the firing bore; uses the piston, the valve and the projectile as valve means for controlling the injection of liquid propellant into the combustion chamber of the gun system; uses a displacement type control means to limit the rate of the loading of liquid propellant and to provide a positive evacuation of misfired liquid propellant from the combustion chamber; and incorporates a vernier control circuit to give direct control over the performance of the gun.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jan 17, 1990

Rescinded

Feb 28, 1990

Duration

1 month

Inventor

  • 1MELVIN J. BULMAN

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records