Yokosuka H5Y
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The Yokosuka H5Y (short designation) or Yokosuka Navy Type 99 Flying Boat Model 11 (九九式飛行艇, 99shiki hikōtei) (long designation), given the allied code name Cherry, was an IJNAS flying boat in service from 1938.
Design and development
The H5Y was designed by Yokosuka to meet an Imperial Japanese Naval Air Service's requirement for a twin-engine maritime reconnaissance flying boat, which was intended to match the performance of contemporary four-engine flying boats while being cheaper to build and easier to maintain. Two prototypes were built at the 11th Naval Arsenal, Hiro, being completed in 1936.[1]
The H5Y was a twin-engine parasol wing aircraft, and thus resembled a scaled-down version of the Kawanishi H6K "Mavis". Performance was found to be poor however, with the aircraft underpowered and suffering from structural problems, which delayed production. Only twenty were built between 1936 and 1941. Yokosuka Naval Air Arsenal built the aircraft at the Dai-Juichi Kaigun Kokusho facility.[1][2][3]
Operational history
The H5Y was accepted for production in 1938 as the Type 99 Flying Boat Model 11, production deliveries starting in 1939.[1] However, production was quickly cancelled owing to the poor performance, with only twenty being built.[4] Although some were used for coastal anti-submarine patrols early in World War II, they were quickly transferred to second-line duties such as transport or training.[1]
Variants
- H5Y
- 2 Prototypes constructed at the Hiro Naval Arsenal
- H5Y1
- Production model, 18 built.
- Yokosuka Navy Type 99 Flying Boat Model 11
- The long formal designation of the H5Y.
Operators
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Specifications (Yokosuka H5Y1)
Data from Warplanes of the Second World War, Volume Five: Flying Boats[1]
General characteristics
- Crew: 6Template:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/lengthTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/engTemplate:Aircraft specs/engTemplate:Aircraft specs/engTemplate:Aircraft specs/lengthTemplate:Aircraft specs/convert
- Propellers: 3-bladed variable-pitch propellersTemplate:Aircraft specs/length
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- Endurance: 26 hoursTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
- Time to altitude: Template:Cvt in 24 minutesTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convertTemplate:Aircraft specs/convert
Armament
- Guns: 3× 7.7 mm (.303 in) machine guns
- Bombs: 2× 250 kg (552 lb) bombsScript error: No such module "Check for unknown parameters".
See also
Related lists
References
- Notes
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- Bibliography
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External links
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- www.combinedfleet.com
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- [1]
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