Ho-401 was a Japanese aircraft
autocannon
An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bull ...
that saw limited, if any, use during
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
. It was a large-caliber version of the 37 mm
Ho-203 cannon
Ho-203 was a Japanese autocannon that saw considerable use during World War II. It was a long-recoil automation of the Year 11 Type direct-fire infantry gun. It was fed by a 15-round closed-loop ammunition belt. It was operationally used only as ...
. The cannon was used on the ground attack aircraft,
Kawasaki Ki-102
The Kawasaki Ki-102 (Army Type 4 assault aircraft) was a Japanese warplane of World War II. It was a twin-engine, two-seat, long-range heavy fighter developed to replace the Ki-45 ''Toryu''. Three versions were planned: the Ki-102a day fighter, K ...
.
Specifications
*Caliber: 57 mm (2.25 in)
*Ammunition: 57 x 121R (1,550 g)
*Weight: 150 kg (330 lb)
*Rate of fire: 80 rounds/min
*Muzzle velocity: 495 m/s (1,624 ft/s)
References
The Pacific War Encyclopedia
Aircraft guns
Autocannon
Machine guns of Japan
57 mm artillery
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