Coaxial dual hollow piston regenerative liquid propellant gun

Details Coaxial dual hollow piston regenerative liquid propellant gun Coaxial dual hollow piston regenerative liquid propellant gun

1980-06-16

1982-07-27

Brown, David H.

Ordnance

Pneumatic

F41F 104

Patent

active

043411479

ABSTRACT:
A regenerative liquid propellant gun having structure which reacts to combustion pressure to dispense and regulate the flow of liquid propellant from an included reservoir as one parameter for obtaining a predetermined pressure/time curve of gun chamber pressure. A first coaxial pumping piston is a differential area pressure piston operating between the combustion chamber and the primary propellant reservoir. A second coaxial piston in a bore in the first piston opens and closes injection ducts running through the pumping piston from the primary reservoir to the bore to interdict flow of propellant to the combustion chamber as a result of relative motion of the two pistons as one or both move responsive to propellant combustion pressure. The second piston may also be a differential area piston operating between the combustion chamber and a second reservoir which may also dispense propellant to the combustion chamber or may be a part of a separate hydraulic system dedicated to hydraulic control of the second piston. The disclosure includes several alternative arrangements for control of the relative movement between the pistons.

REFERENCES:
patent: 3138990 (1961-10-01), Jukes et al.
patent: 3160064 (1964-12-01), Bell et al.
patent: 4023463 (1977-05-01), Tassie
patent: 4033224 (1977-07-01), Holtrop
patent: 4050349 (1977-09-01), Graham
patent: 4063486 (1977-12-01), Ashley
patent: 4099445 (1978-07-01), Singelmann et al.
patent: 4100836 (1978-07-01), Hofmann
patent: 4269107 (1981-05-01), Campbell
patent: 4281582 (1981-08-01), Jagua

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