Ho-401 cannon

Ho-401 was a Japanese aircraft autocannon that saw limited, if any, use during World War II. It was a large-caliber version of the 37 mm Ho-203 cannon. The cannon was used on the ground-attack, Kawasaki Ki-102b heavy fighter of the Imperial Japanese Army Air Force.

Ho-401 cannon
Type	Aircraft cannon
Place of origin	Imperial Japanese army
Service history
Wars	World War II
Specifications
Mass	150 kg (330 lb)
Length	2,000 mm (79 in)
Barrel length	800 mm (31 in)
Cartridge	57 x 121R (1,550 g)
Calibre	57 mm (2.2 in)
Action	Short recoil-operated
Rate of fire	80 rounds/min
Muzzle velocity	495 m/s (1,620 ft/s)
Feed system	16-round drum

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)

Bibliography

• Gustin, Emmanuel; Williams, Anthony G. (2003). Flying Guns: The Development of Aircraft Guns, Ammunition and Installations 1933–1945. Marlborough, UK: Airlife. ISBN 978-1-84037-227-4.

External links

• The Pacific War Encyclopedia