DFS Kranich

Kranich
An AB Flygplan Se-103, a Swedish licence-built Kranich.
Role Two-seat sailplane
Manufacturer Karl Schweyer AG (primary manufacturer)
Designer Hans Jacobs for DFS
First flight 1935
Variants SZD-C Żuraw

The DFS Kranich is a type of German glider. It was developed by Hans Jacobs for the Deutsche Forschungsanstalt für Segelflug (DFS).

History

Series production of the Kranich (Crane) took place in the aircraft division of Karl Schweyer AG in Mannheim. The two-seater was, in its version 2, the most widely built two-seat glider in Germany from 1935 to 1939. Several hundred examples were built; exact numbers are not known.

On 11 October 1940 Erich Klöckner in a Kranich achieved the record height in a glider of 11,460 m. Because it occurred in wartime, the altitude record was not recognized by the Allied occupying powers, and Klöckner only received official recognition by the Fédération Aéronautique Internationale (FAI) in the late 1990s.[1] This record height was only exceeded ten years after the flight by the American Bill Ivans during a similar scientific program in the Sierra Nevada.

In 1942 30 Kranichs were built by the Swedish manufacturer AB Flygplan in Norrköping, and delivered to the Swedish Air Force for training purposes. These machines were given the military designation Flygplan Se 103.

Between 1950 and 1952 50 examples of a slightly modified copy of the Kranich II were built in Poland, known as the SZD-C Żuraw (żuraw is Kranich in Polish = "crane").

After the war, Jacobs designed the Kranich III, a new development very different from its predecessors. It was developed and produced at the Focke-Wulf aircraft factory in Bremen. The first flight was on 1 May 1952, piloted by Hanna Reitsch. Thirty-seven were built.

Variants

Kranich II
Kranich
The initial prototype designed by Hans Jacobs for the DFS.
Kranich II
Production aircraft built primarily by Karl Schweyer AG and by Mraz, Czechoslovakia, but also in Poland and Sweden
Flygplan Se 103
License production of 30 aircraft in Sweden for the Swedish Air Force
SZD-C Żuraw
License production of a modified Kranich in Poland
Focke-Wulf Kranich III
A major re-design.

Specifications (Kranich II)

Fuselage of a DFS Kranich II-B1 built in 1938

Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde[2]

General characteristics

Performance

Notes

  1. aerokurier magazine 1/1999: Erich Klöckners Vorstoß zur Tropopause, Motor Presse 1999
  2. Shenstone, B.S.; K.G. Wilkinson; Peter Brooks (1958). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs dans Le Monde (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 91–94.

References

  • Shenstone, B.S.; K.G. Wilkinson; Peter Brooks (1958). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs dans Le Monde (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 91–94. 

Further reading

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