Friedrichshafen FF.31

The Friedrichshafen FF.31 was a German lightweight two-seat floatplane of the 1910s produced by Flugzeugbau Friedrichshafen.

FF.31
Role Two-seat coastal patrol floatplane
Manufacturer Flugzeugbau Friedrichshafen
First flight 1910s
Introduction 1915
Primary user German Imperial Navy
Number built 2

Development and design

The FF.31 was a biplane floatplane with a central nacelle and two open cockpits. The engine was mounted at the rear of the nacelle, driving with a pusher propeller. The twin open-frame tail booms extended aft from the wings to carry the tail unit. A version of the FF.31 with a fixed tailskid landing gear was designated the FF.37.

Operational history

FF.31s took part in a Sea battle where the German Imperial Navy was defeated, in May 1915.

Variants

FF.31
Production floatplane
FF.37
FF.31 with fixed tailskid landing gear.

Operators

 German Empire

Specifications (FF.31)

Data from [1]

General characteristics

  • Crew: 2
  • Length: 10.15 m (33 ft 4 in)
  • Upper wingspan: 16.85 m (55 ft 3 in)
  • Lower wingspan: 15.8 m (51 ft 10 in)
  • Height: 3.7 m (12 ft 2 in)
  • Wing area: 60 m2 (650 sq ft)
  • Empty weight: 1,063 kg (2,344 lb)
  • Gross weight: 1,535 kg (3,384 lb)
  • Powerplant: 1 × Maybach IR 6-cylinder water-cooled in-line piston engine, 120 kW (160 hp)
  • Propellers: 2-bladed pusher propeller

Performance

  • Maximum speed: 98 km/h (61 mph, 53 kn)
  • Range: 500 km (310 mi, 270 nmi)
  • Rate of climb: 0.9 m/s (180 ft/min)
  • Time to altitude: 500 m (1,600 ft) in 9 minutes 30 seconds ; 800 m (2,600 ft) in 16 minutes

Armament

See also

Related lists

References

  1. Kober, Theodor von; Borzutzki, Siegfried. Flugzeugbau Friedrichshafen GmbH : Diplom-Ingenieur Theodor Kober (in German) (1. Aufl ed.). Burbach. pp. 104–105. ISBN 978-3927513600.

Further reading

  • The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). Orbis Publishing.
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