Ordnance – Pneumatic
Patent
1995-02-23
1996-03-19
Bentley, Stephen C.
Ordnance
Pneumatic
F41A 104
Patent
active
054995671
ABSTRACT:
A weapons system that fires projectiles of 20 to 500 millimeters or larger in diameter using a compression-ignition combustion of common fuel oils in conjunction with pre-compressed air as the firing force, in which automatic breech loading occurs during resetting, to enable a continuous, automatic rapid fire. Fuel pumped at a high pressure enters a combustion chamber, previously filled with high pressure air from an external compressor, where an extremely rapid combustion occurs, resulting in compression of the air in a charge chamber. A control valve then opens, allowing compressed air from the charge chamber, where high pressure fuel is then injected and instantly vaporized and combusted to propel a projectile through a barrel. A loading ram concurrently engraves the next round into a breech block chamber. In the resetting process, the valve reseats, air from an external compressor enters the combustion chamber via a check valve, and the combustion chamber is vented to the atmosphere. The breech assembly rotates to position a new projectile in the barrel so that the firing process can repeat.
REFERENCES:
patent: 2391636 (1945-12-01), McArthur
patent: 3380345 (1968-04-01), Nelson
patent: 4100836 (1978-07-01), Hofmann
patent: 4281582 (1981-08-01), Jaqua
patent: 4341147 (1982-07-01), Mayer
patent: 4745841 (1988-05-01), Magoon et al.
patent: 4852458 (1989-08-01), Bulman
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