Karl Jaeckel

Karl Friedrich Wilhelm Jaeckel (born October 11, 1908 in Käntchen , Schweidnitz district , Lower Silesia ; † January 24, 1984 in Hamburg ) was a German engineer , mathematician and university professor .

Life

Jaeckel completed his studies in 1934 in Breslau (Lower Silesia) as a graduate engineer and then worked until 1939 as an assistant at the chair for higher mathematics at the Technical University of Breslau . There he became a Dr.-Ing. PhD with a functional analytical thesis on the determination of maximum eigenvalues ​​for certain boundary value problems . His doctoral supervisor was Werner Schmeidler . In 1938 he became a Dr.-Ing. habil. and was appointed lecturer in November 1939 .

From 1940 to 1946 he taught at the Technical University of Berlin, with interruptions due to military service . From 1946 to 1949 he worked at the Aviation Research Institute in Braunschweig -Völkenrode, where he was posted during the war, where he a. a. dealt with currents around rotating airfoils.

On March 7, 1949, Jaeckel qualified as a professor in mathematics and went to the Technical University of Hanover , where he was a lecturer in 1951 and was appointed adjunct professor in the field of applied mathematics and functional analysis on October 2, 1952 .

In 1958 Jaeckel returned to the Technical University of Berlin as a scientific advisor, where he was appointed full professor for a chair in mathematics in 1962. In 1964 he became Wolfgang Haack's successor as director of the computer institute, which in 1974, the year he retired , became part of the central computer center (ZRZ) of the TU.

Fonts (selection)

• About the determination of maximum eigenvalues ​​for certain boundary value problems . Breslau 1936, OCLC 258301193 (dissertation at the Technical University of Wroclaw).
• About the forces on accelerated moving, variable wing profiles . In: Engineer Archive . tape 9 , no. 5 , July 18, 1938, ISSN  0020-1154 , p. 371–395 , doi : 10.1007 / BF02086049 (habilitation thesis at the Technical University of Wroclaw).

Jaeckel also published over 30 specialist articles, mainly in aviation research (1938–1942) and in the journal for applied mathematics and mechanics (1950–1957).

• Contribution to the theory of the wing extreme stretching (=  German aviation research . No. 1608 ). Headquarters for scientific reporting of the aviation research of the general aviation master, Berlin-Adlershof 1942, OCLC 312667257 .

With Walter Just he wrote the treatise Aerodynamics of Helicopters and Gyroscopes in two volumes in 1954 .

• Aerodynamics of helicopters and gyroscopes (=  reports from the German Helicopter Study Group . Part 1: Introduction, performance calculations ). Stuttgart 1954, OCLC 832439938 .
• Aerodynamics of helicopters and gyroscopes (=  reports from the German Helicopter Study Group . Part 2: Calculation of the rotor ). Stuttgart 1954, OCLC 832439960 .

literature

• Willibald Reichertz: East Germans as lecturers at the Technical University of Hanover (1831–1956) . In: East German family studies . XVIII (55th year), issue 3.Degener & Co, 2007, ISSN  0472-190X , p. 109-120 .
• Ernst Heinrich Hirschel, Horst Prem, Gero Madelung: Aeronautical research in Germany. Publishing house Bernhard u. Gräfe, 2001.
• Jaeckel, Karl Friedrich Wilhelm. In: Catalogus Professorum 1831–1981. Festschrift for the 150th anniversary of the University of Hanover. Volume 2. W. Kohlhammer, Stuttgart / Berlin / Cologne / Mainz 1981, ISBN 3-17-007321-4 , pp. 127 and 413 (the 2006 commemorative publication on the 175th anniversary of the university contains the same information).

Individual evidence

1. ↑ Kürschner's German Scholar's Calendar. 1966.