Karl Luerenbaum

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Karl Lürenbaum (born March 1, 1900 in Bonn ; † March 20, 1983 in Königswinter ) was a German aircraft engine researcher at the German Aviation Research Institute and, after 1945, a full professor at RWTH Aachen University .


Karl Lürenbaum was born in Bonn in 1900. At the end of the 1920s Lürenbaum joined the German Aviation Research Institute (DVL) in Berlin-Adlershof , where he initially worked as an assistant to Wunibald Kamm in the engine department of the DVL. On June 1, 1937 Lürenbaum was appointed full research professor.

On April 30, 1949, Lürenbaum was appointed professor for machine elements and machine dynamics at RWTH Aachen University, where Friedrich Seewald had been gathering a group of former DVL employees since 1946 for a later resumption of DVL research activities. Together with Otto Fuchs , Karl Lürenbaum was appointed as the first full board member of DVL in West Germany in January 1951, which they both held until 1954. With the approval of powered flight in West Germany by the Allies, Lürenbaum set up the Institute for Engine Dynamics at RWTH Aachen University in 1955, which he headed until his retirement.

Research priorities

A scientific focus of Lürenbaum in the time before 1945 at the DVL was in the area of ​​the vibrations of the motor-propeller system

Lürenbaum received one of his first research assignments at the newly established Institute for Engine Dynamics in 1956 from Walter Horten , who needed a suitable long-distance drive for his flying wing developments. Pinnekamp carried out the theoretical and test bench work at the institute. The Pützer jackdaw was developed as a test vehicle at Alfons Pützer KG in Bonn . Lürenbaum continued the work on the long-distance shaft drive as part of a SR-57 project funded by the Ministry of Economic Affairs and developed a 6 m long long-distance shaft construction for the test vehicle Pützer Bussard by 1959. Karl Lürenbaum's institute was also closely involved in converting the Bussard for Bölkow GmbH to a ring tail. Lürenbaum continued the close collaboration on these projects with Alfons Pützer in the early 1960s with the development of the remote drive for the two folding propellers for the Pützer MS-60 .

From the mid-1960s, Lürenbaum u. a. with the development of turbofan engines , as they were later used by Hanno Fischer at Rhein-Flugzeugbau Sirius .


  • Karl Lürenbaum: Vibration of Crankshaft Propeller Systems , SAE Technical Paper 360147, 1936
  • Karl Lürenbaum: The measuring car of the Institute for Machine Dynamics of the German Aviation Research Institute (DVL), Aachen , research reports from the Ministry of Economics in North Rhine-Westphalia, Springer-Verlag, 1956, ISBN 978-3-663-04576-2
  • Karl Lürenbaum: Use of strain gauges in industry , lecture volume , Vulkan-Verl. Classen, 1967
  • Karl Lürenbaum: Vibrations of the engine-propeller system , writings of the German Academy of Aviation Research , issue 5, R. Oldenbourg Verlag, 1939
  • Karl Lürenbaum, Otto Kirch: The method of Rosard , in: For the calculation of coupled natural frequencies of blades of axial turbo machines , 1966, pp. 17-22
  • W. Meyer zu Capellen: The coupling of two universal joints - dedicated to Prof. Lürenbaum on the occasion of his 65th birthday , in: Industrieanzeiger Drive, Gear, Control, JG87, No. 8

Individual evidence

  1. ^ German biography - Wunibald Kamm
  2. ^ German Historical Museum - daily facts
  3. RWTH Aachen University Archive
  4. RWTH Aachen: Personnel and Course Directory for SS 1950
  5. ^ DLR - Institute for High Frequency Technology , article about Otto Fuchs
  6. Karl Lürenbaum: vibrations of the system motor propeller , lecture at the 5th Science Meeting, Jan. 1939
  7. ^ Paul Zöller, Hanns-Jakob Pützer: Pützer aircraft. Dec. 2018, ISBN 978-3-7481-2096-4