LF1 wren

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LF1 wren
Wren 1994
Type: STOL - light aircraft
Design country:

German Reich NSGerman Reich (Nazi era) German Empire


Technical University of Braunschweig

First flight:

December 1940

Number of pieces:


The slow aircraft LF1 Wren was a single-seat, propeller-driven STOL - light aircraft , the early 1940s by students under the direction of Hermann Winter at the Technical University of Braunschweig at the Institute of Aircraft developed and built.


Winter played a key role in the development of the Fieseler Storch in the 1930s . After leaving the Fieseler company, he took over a chair at the Institute for Aircraft Construction at the TU Braunschweig in August 1938. In the course of the training of its students, a low-speed aircraft was designed and built there in 1939/40. Teaching and research were in the foreground here, a special purpose was not specified.

Because of the limited financial resources, the aircraft should have the smallest possible dimensions and use an economical engine. The slow flight characteristics should at least correspond to those of the stork. Construction of the machine (code D-YBAR) in the institute's workshops began in mid-1940 and was completed at the end of 1940. The first flight took place in December 1940, on November 11, 1942 the aircraft was lost during flight tests in an accident.

Since the military was interested in a slow aircraft for submarine observation, as an anti-tank weapon and for training purposes, a second prototype was built by 1943, which was confiscated by the British after the end of the Second World War . After a short military and several years of private use, this aircraft is now in the branch of the Deutsches Museum in Schleissheim .

Two other aircraft of this type were built in the 1950s, one was destroyed in an accident in 1957. The pilot Oskar-Heinrich Bär , a well-known German fighter pilot of the Second World War, was killed.

On June 10, 1955, the "Wren" was the first motorized aircraft built in Germany after the war to receive a D-EBAR license. The type certificate was issued on October 5, 1955.

Received aircraft

The 2nd prototype D-EBCQ in the Schleissheim aircraft yard
  • D-EBCQ (No. 2) is located in the Schleissheim aircraft yard .
  • D-EBBR (No. 4) is owned by the TU Braunschweig and was previously exhibited in the Manfred Pflumm International Aviation Museum under the previous registration D-EBCG in Villingen-Schwenningen.

Technical specifications

Parameter Data
crew 1
length 6.08 m
span 8.02 m
height 2.38 m
Wing area 9.20 m²
Empty mass 256 kg
Takeoff mass 355 kg
Cruising speed
Minimum speed 50 km / h
Take-off and landing area 20 m × 100 m
Top speed 180 km / h
Service ceiling 4650 m
Range 400 km
Engine Zündapp Z 9-092 with 37 kW / 50 PS
Tank capacity 40 l

See also


  • FK Franzmeyer: The history of the LF1 “Wren” slow aircraft. Chronicle of the first aircraft built and certified in the Federal Republic of Germany after World War II . Airplane Profile No. 3, UNITEC-Medienvertrieb eK, Stengelheim, Germany, 2000.
  • H. Winter: The single-seat low-speed aircraft LF1 and its flight performance . VDI magazine, Volume 88, No. 3/4, p. 43, January 22, 1944.
  • H. Redemann: LF1 wren . Flug Revue & Flugwelt International, No. 6, p. 48 ff., Stuttgart, 1974.
  • G. Brinkmann, K. v. Gersdorff, W. Schwipps: The German aviation - sports and travel aircraft guidelines of a diverse development , Bernard & Graefe Verlag 1995, ISBN 3-7637-6110-1 .
  • J. Fricker: Zaunkönig - A study in slow motion . AIR International, Issue May, pp. 229, Key Publishing, UK, 1982.
  • ders .: Slow bird from Brunswick - part 1 & 2 . Air International, Issue November & December, pp. 52 / pp. 62, Key Publishing, UK, 1992.

Web links

Commons : LF1 Wren  - Collection of images, videos and audio files
  • www.ifl.tu-bs.de : Institute for Aircraft and Lightweight Construction at the Technical University of Braunschweig, accessed on March 5, 2009
  • www.ifl.tu-bs.de : Detailed history and technical description, accessed on March 5, 2009
  • [1] : The German data sheet of the wren, accessed on May 2, 2019

Individual evidence

  1. Flugwerft Schleißheim : LF1 Zaunkönig, accessed on March 5, 2009
  2. International Aviation Museum at Schwenningen Airfield ( Memento from February 1, 2009 in the Internet Archive ): LF1 Wren, accessed on March 5, 2009