KB (plane)

The flying boat for the experiment that coastal defense justice society of Japan produced KB experimentally. It is all first Japanese metal airplanes. Imperial Army and the Great Japanese Empire navy dealt with the production of the body jointly, and the navy performed the use.

Summary

The coastal defense justice society decided that I produced all first Japanese metal planes and trial manufacture flying boat that it was (1922) in September for 1,922 years to assume it the study materials of the soldier. The design of the body was entrusted Tokyo Imperial University aviation laboratory and "all metal airplane design committees" consisting of the members of army and navy with, and 横田成沽技師 was in charge of the design superintendent in charge person. As for the production of the body, a Yokosuka naval shipyard manufacture of arms department airplane factory performed the production of power, a flight control, the equipment of a ship army Tokyo gunner arsenal. The body name was considered to be all metal seaplanes at first, but I am named "KB" (1924) in March in 1924 when work on the army side was completed by "coastal defense" of the coastal defense justice society. I had effect of the Great Kanto Earthquake, and the work was completed in delay, December, 1924.

The body is presented to the navy and starts a flight test at the Taura shore. It was judged that speed performance and the detached room water landing performance were good while adding small improvement to a body, but, in the case of the seventh flight test performed (1926) on March 22 in 1926, they broke a posture during a gliding descent, and an accident to make nose dive, and to crash on the sea surface occurred, and all died at their post four crews. Development of KB of the prepared thing is not continued, and the spare hull will construct all metal flying boats (のちの third loyalty and courage flying boat) which changed a design newly. The left spare hull was used as experiment machine parts of the Tokyo gunner arsenal afterwards.

Except that, as for the body, a part of the wing is Habu tension by twin-engine plane flying boat of the high wing having a single wing; all; is made of metal. The engine was going to be equipped with a domestic engine (official name 200 hp) at first, but was changed to the BMW-3A engine made in Germany because development was late. The metal propeller or type V bias wing prop of 2 feathers are new direction, too, and coastal defense justice society acquires a patent in Japan with a metal hull. In addition, the cause of the crash is thought to be the trouble of the flight control.

Specifications

• Full length: 13.95m
• Overall width: 21.78m
• Overall height: 4.00m
• Self-respect: 2,012 kg
• Gross weight: 3,086 kg
• An engine: BMW-3A water-cooled series six cylinders (liftoff 230 hp) *2
• Maximum velocity: 201km/h
• Service ceiling: 6,500m
• A flying range: 2,000km
• A crew: Four people

References

• For Tadashi Nozawa "日本航空機総集立川, army Airlines arsenal, 満飛, day country" publication cooperation company, 1,980 years, it is 135-136 pages. National bibliography number: 80027840。

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This article is taken from the Japanese Wikipedia KB (plane)

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