Hiro
The Naval Arsenal of Hiro (Hiro Kaigun Kosho, in Hirosho summary) is a missing Japanese aeronautical manufacturer.
With beginning of the year 20 the Imperial Navy had two aeronautical workshops with Yokosuka and Sasebo, but with the limited capacities. The Naval Arsenal of Kure thus created on August 1st, 1920 an aeronautical department and, to have sufficient space with its activity, created an arsenal appendix 5 km in the south-west of Kure. The new factory was completed in October 1921 and in October 1923 launched out in the production under license of the Felixstowe F.5.
Become in April 1923 an autonomous establishment, Hirosho played a crucial role in the development of the Japanese aircraft industry, passing from construction wood to the steel construction with coating working on flying-boats. After having developed an entirely metal bomber twin-engine monoplane with median wing, G2H1, the arsenal transferred its knowledge to make at the private company Mitsubishi in the middle of the Thirties and centred its activities on the maintenance and the repair of the planes of the Imperial Navy. Appendices were even made up in Ohita and Maizuru.
During the war Hiro will produce under license of the Nakajima B5N, Aichi E13A, Aichi D4Y and various engines. A new flying-boat, the H10H1, was also developed, but the program was stopped because of more urgent priorities of war.
Sources
" Japanese Aircraft 1910-1941, " Robert C. Mikesh & Shorzoe Abe.
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