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Colt Mk 12 cannon
The Colt-Browning Mk 12 was a 20 mm cannon widely used by the US Navy after World War II.
The Mk 12 was similar to the wartime Hispano HS 404/M3 used on a variety of American and British fighter aircraft, but it used a lighter projectile with a bigger charge for better muzzle velocity and faster rate of fire at the cost of hitting power.
In service, the Mk 12 proved less than satisfactory. Although its muzzle velocity and rate of fire were acceptable, it was inaccurate and frequently unreliable -- pilots of the F-8 Crusader over Vietnam appreciated the cannon in principle, but jams and stoppages were common.
Nevertheless, the Mk 12 was standard cannon armament on gun-armed US Navy fighters from the early 1950s to the early 1960s, including the F4D Skyray, F-3 Demon, A-4 Skyhawk, F-8 Crusader, and A-7 Corsair II.
The Mk 12 is not the same as the Pontiac M39 cannon used on the F-100 and F-101 of the USAF, despite the similar caliber.
Specifications
- Type: single-barrel automatic cannon
- Caliber: 20 mm (0.79 in)
- Operation: gas
- Length: N/A
- Weight (complete): 46 kg (101.4 lb)
- Rate of fire: 1,000 rpm
- Muzzle velocity: 1,010 m/s (3,300 ft/s
- Projectile weight: 110 g (3.88 oz)
This article is licensed under the GNU Free Documentation License at http://www.gnu.org/copyleft/fdl.html
You may copy and modify it as long as the entire work (including additions) remains under this license.
You must provide a link to http://www.gnu.org/copyleft/fdl.html
To view or edit this article at Wikipedia go to http://www.wikipedia.org/wiki/Colt_Mk_12_cannon
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