Continuous bore evacuation system

Details Continuous bore evacuation system Continuous bore evacuation system

1992-10-01

1993-09-21

Brown, David H.

Ordnance

Lubricant injector

89 141, F41A 1306, F41A 1308

Patent

active

052459055

ABSTRACT:
A continuous bore evacuation system for aspirating the noxious gas products associated with the firing of tank rounds and for cooling all or part of the gun barrel between rounds. The bore evacuator employs an annular container which is fixed to the exterior surface of the gun barrel, preferably just ahead of the powder chamber. A plurality of canted ports lead from the container into the bore so that gas products can fill the container after a projectile passes the ports, and a compressed gas can be pumped in through check-valves to continuously clear the bore of gas products after launch. The ports may be arranged in a cochlear manner so that the flow of gas is substantially helical. In another embodiment, an aerosol solvent is injected into the compressed gas to prevent accumulation of propellant residue within the container, check-valves, and bore evacuator holes.

REFERENCES:
patent: 940101 (1909-11-01), Wetzel
patent: 1160778 (1915-11-01), Smart
patent: 2146554 (1939-02-01), Rossmann
patent: 2427374 (1947-09-01), Walker
patent: 2766661 (1956-10-01), Margulis
patent: 2791940 (1948-05-01), Speake et al.
patent: 2807986 (1957-10-01), Howard et al.
patent: 3118342 (1964-01-01), Campione et al.
patent: 4024790 (1977-05-01), Heiderer
Bundy, et al, "High Conductivity Thermal Shrouds and Continuous Bore Evacion System (CBES)," BRL-TR-3336 (May 1992).

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