Karl Gehlen

Karl Gehlen (born March 9, 1883 in Düsseldorf , † April 22, 1933 in Berlin ) was a German aircraft engineer.

Life

Karl Maria Hubert Gehlen was a son of the businessman Balthasar Hubert Gehlen and his wife Wilhelmine, born. Pfaffrath. Gehlen received his doctorate in 1912 with a thesis on lateral stability and lateral steering of flying machines , excerpts of which were published in the magazine for flight technology and motorized airship travel. At this point he had already been working as an assistant at H. Reissner in Aachen for several years . In his dissertation he demonstrated that most aircraft of his time were laterally unstable, which explains many accidents in the early days of aircraft construction.

From 1913 he was the technical director of Flugzeugbau Friedrichshafen GmbH. During his time in Friedrichshafen he mainly drove the development of heavy war aircraft, e.g. B. the FF 49 B and FF 49 C, ahead. After the end of the First World War , he moved to the aircraft department of a Dutch company. He later worked for Kienzle or Kienzle's subsidiary for nine years before he became a consulting engineer in Berlin.

His marriage to Anna Miller, a daughter of the Friedrichshafen architect Josef Miller , in 1913 gave birth to four sons.

Publications

• Lateral stability and lateral control of flying machines , in: Zeitschrift für Flugtechnik und Motorluftschiffahrt 4, 1913, pp. 173–77, 186–91, 201–06 and 213–21
• Testing of clock springs , in: Werkstattstechnik 26, 1932, pp. 402-04
• Comparison of different wage procedures , in: Der Betrieb 11, 1932, pp. 214-17
• A clear raw balance sheet with a short-term income statement , in: Der Betrieb 11, 1932, pp. 353–58
• Equity interest and prime costs , in: Maschinenbau 11, 1932, pp. W 69-W 70

literature

• Julius Krauss:  Gehlen, Karl. In: New German Biography (NDB). Volume 6, Duncker & Humblot, Berlin 1964, ISBN 3-428-00187-7 , p. 134 ( digitized version ).

Web links

• A patent pending by Karl Gehlen