Heinkel He 57

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Heinkel He 57 Heron
Heinkel HE 57 front view from Flight 1931-05-29.jpg
Front view of Heinkel He 57 at Stockholm International Aero Show 1931
Role Amphibious flying boat
National origin Germany
Manufacturer Heinkel
Designer Dr Ernst Heinkel
First flight 1929-30
Introduction 1930 Paris Aero Show
Number built 1

The Heinkel He 57 was a single engine amphibious flying boat built in 1929.

He 57

Development[]

The sole He 57 {factory designation HE.57) was built by the Ernst-Heinkel-Flugzeugwerken at Warnemunde in 1929.[1] It was displayed at the Paris Aero Show in December 1930 and at the Stockholm International Aero Show in May 1931.[2] It was purchased by the flying school at List auf Sylt who used it as a trainer.[1]

Design[]

The double stepped hull was made of aluminum. The wings used wood spars and aluminum ribs with fabric covering. The landing gear was hydraulically raised with a manual pump.[2]


Specifications Heinkel He 57[]

Data from Flight[2] unless noted

General characteristics

  • Capacity: 6
  • Length: 11.8 m (38 ft 9 in) [1]
  • Wingspan: 16.00 m (52 ft 6 in)
  • Wing area: 39.2 m2 (422 sq ft)
  • Gross weight: 2,440 kg (5,380 lb)
  • Powerplant: 1 × Pratt and Whitney Wasp Radial, 340 kW (450 hp)
  • Propellers: 2-bladed

Performance

  • Maximum speed: 195 km/h (121 mph, 105 kn)
  • Service ceiling: 3,800 m (12,500 ft) [1]
  • Time to altitude: 5 min to 1,000 m (3,300 ft)
  • Wing loading: 62.3 kg/m2 (12.75 lb/sq ft)
  • Landing speed: 93 km/h (58 mph; 50 kn)

References[]

  1. ^ a b c d Gütschow, Fred (1978). Die deutschen Flugboote. Stuttgart: Motorbuch Verlag. pp. 204–6. ISBN 3-87943-565-0.
  2. ^ a b c "I.L.I.S. The Stockholm International Aero Show". Flight. XXIII (22): 472–4. 29 May 1931.
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