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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.

H5Y
Yokosuka H5Y Type 99 Flying Boat "Cherry"
Role Flying boat
Manufacturer Yokosuka
First flight 1936
Introduction 1939
Primary user Imperial Japanese Navy Air Service (IJNAS)
Produced 1938 - 1941
Number built 20

Design and development


The H5Y was designed by Yokosuka to meet an IJNAS 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 20 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, only 20 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


 Japan

Specifications (Yokosuka H5Y1)


3-view drawing of the Yokosuka H5Y
3-view drawing of the Yokosuka H5Y

Data from Warplanes of the Second World War, Volume Five: Flying Boats[1]

General characteristics

Performance

Armament


See also


Related lists


References


Notes
  1. Green 1972, pp. 136–137.
  2. Mikesh, Robert; Shorzoe, Abe (1990). Japanese Aircraft 1910–1941. London: Putnam. p. 262. ISBN 0-85177-840-2.
  3. Francillon, René J. (1979). Japanese Aircraft of the Pacific War. London: Putnam & Company Limited. p. 495. ISBN 0-370-30251-6.
  4. Donald 1997, p. ?.
Bibliography



На других языках


[de] Yokosuka H5Y

Die Yokosuka H5Y (alliierter Codename: Cherry) war ein Flugboot der Kaiserlich Japanischen Marine. Es wurde von 1936 bis 1941 gebaut und als „Marinetyp 99“-Flugboot bezeichnet.
- [en] Yokosuka H5Y

[it] Yokosuka H5Y

Lo Yokosuka H5Y, indicato anche Idrovolante Yokosuka per la marina Tipo 99 Modello 11 (九九式飛行艇 99shiki hikōtei?) in base alle convenzioni di designazione allora vigenti, e al quale venne assegnato il nome in codice alleato Cherry[2]) fu un idrovolante a scafo centrale, bimotore e monoplano ad ala alta, disegnato dall'ufficio di progettazione giapponese Kūgishō, il Primo arsenale tecnico aeronavale di Yokosuka[N 1] ed impiegato dalla Dai-Nippon Teikoku Kaigun Kōkū Hombu, la componente aerea della Marina imperiale giapponese, durante la seconda guerra sino-giapponese e le prime fasi della seconda guerra mondiale.

[ru] Yokosuka H5Y

Yokosuka H5Y (яп. 九九式飛行艇, летающая морская лодка Тип 99 модель 11) — серийная летающая лодка Императорского флота Японии периода Второй мировой войны.



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