Heinkel HD 26

The Heinkel HD 26 was a reconnaissance seaplane developed in Germany during the 1920s for production in Japan. It was intended as a smaller, single-seat counterpart to the HD 25, to provide a spotter aircraft for warships, to take off from a short ramp. The HD 26 was a conventional biplane with staggered wings, twin float undercarriage, and an open cockpit.

HD 26
Role Reconnaissance seaplane
National origin Germany
Manufacturer Heinkel, Aichi
First flight 1928
Primary user Imperial Japanese Navy
Number built 2

The pattern aircraft supplied by Heinkel was powered by a 300 hp Hispano-Suiza V-8 engine, but the single example of the Aichi Navy Type 2 Single-seat Reconnaissance Seaplane built by Aichi had an Aichi-built 420 hp Bristol Jupiter VI instead. Launching ramps were built on the battleship Nagato and the cruiser Furutaka for trials, but the HD 25 and HD 26 were already obsolete.[1]

Variants
Heinkel HD 26
Heinkel Doppeldekker 26, German built prototype of a single seat reconnaissance/fighter seaplane[1]
Heinkel Small Reconnaissance Seaplane
Unofficial designation for the Heinkel built prototype[1]
Heinkel-go Reconnaissance Seaplane
An alternative unofficial designation for the HD 26[1]
Aichi Navy Type 2 Single-seat Reconnaissance Seaplane
The official designation for the Heinkel and Aichi built prototypes[1]

Specifications (Aichi-built)

General characteristics

  • Crew: Two, pilot and observer
  • Length: 8.44 m (27 ft 8 in)
  • Wingspan: 11.80 m (38 ft 9 in)
  • Height: 3.59 m (11 ft 10 in)
  • Wing area: 37.8 m2 (407 sq ft)
  • Empty weight: 1,150 kg (2,540 lb)
  • Gross weight: 1,500 kg (3,310 lb)
  • Powerplant: 1 × Aichi-built Bristol Jupiter VI , 420 kW (310 hp)

Performance

  • Maximum speed: 211 km/h (132 mph, 115 kn)
  • Rate of climb: 6.7 m/s (1,310 ft/min)

References
Notes
  1. Mikesh, Robert and Shorzoe Abe. Japanese Aircraft 1910–1941. London: Putnam, 1990. ISBN 0-85177-840-2
Bibliography
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 499.
  • Mikesh, Robert and Shorzoe Abe. Japanese Aircraft 1910–1941. London: Putnam, 1990. ISBN 0-85177-840-2


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