Mitsubishi B5M


Mitsubishi B5M
B5M
Role Attack
Manufacturer Mitsubishi
First flight 1937
Introduction 1937
Primary user Imperial Japanese Navy
Number built 125 (B5M), 145 (B5M1)

The Mitsubishi B5M was an Imperial Japanese Navy land-based attack aircraft with an Allied reporting name of "Mabel" (also known as "Kate 61"). It was designed in response to a 1935 specification for a new bomber for use on the IJN aircraft carriers. The machine was to have a crew of three, folding wings for flight deck storage, a speed of not less than 322 km/h (200 mph), a flight endurance of not less than seven hours, and the ability to carry at least 800 kg (1,760 lb) of bombs - a tall order for a single-engine aircraft of the mid-1930s. It was intended as a backup for the Nakajima B5N "Kate" torpedo bomber. Although designed as a carrier based aircraft, it was relegated to land-based torpedo bomber duties in World War II. 125 were built.

The Japanese Navy designation was 九七式二号艦上攻撃機, or Navy Type 97 No.2 Carrier Attack Bomber. The "number 2" was to distinguish it from the Nakajima B5N, which was called 'Navy Type 97 No.1 Carrier Attack Bomber'.

Contents

Variants

  • B5M1:Three-seat attack aircraft for the Imperial Japanese Navy. In the design and building of the B5M1, the Japanese obtained a great deal of useful information from an American built Northrop A5 bomber that they had purchased, brought to Japan, dismantled, and analyzed.[citation needed] The aircraft that Mitsubishi produced first flew in 1937 and was an all-metal, low-wing cantilever monoplane with fixed undercarriage with large wheel spats. The crew of three sat in a long canopy that had a smooth transition to the fuselage. The B5M1s began equipping Japanese Naval units in late 1937, but their performance was never as satisfactory as was that of other Japanese aircraft carrier-based bombers. The B5M1's performance was considered marginal and only 145 were manufactured. While they had originally been intended for aircraft carrier use, the majority were employed during the early months of World War II from land bases in Southeast Asia and in China, where they were confronted by weak or no enemy fighter opposition. These machines ended their careers as trainers, target tugs, and kamikazes.

Operators

 Japan

Specifications (Mitsubishi B5M1)

General characteristics

Performance

Armament

  • Guns: 2 × fixed, forward-firing 7.7 mm (0.303 in) Type 97 machine guns mounted in wings, 1 × 7.7 mm (0.303 in) Type 89 machine gun in flexible mount in rear cockpit
  • Bombs: up to 1,000 kg (2,204 lb) of bombs carried externally

See also

Aircraft of comparable role, configuration and era

Related lists

References

Notes

Bibliography

  • Francillon, René J. Japanese Aircraft of the Pacific War. London: Putnam, 1970. ISBN 370 00033 1.
  • Francillon, René J. Japanese Aircraft of the Pacific War. London: Putnam & Company Ltd., 1979. ISBN 0-370-30251-6.



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