7 maart 1997
J.L. van Ingen (1932) graduated in 1954 from the Department of Aeronautical Engineering at Delft University. Already in 1952 he was charged as a student-assistant with the development of a research program for the just realised low-speed-low-turbulence wind tunnel. A long lasting research program on viscous flows was established with special emphasis on boundary layer control for drag reduction and high lift augmentation. In 1966 he obtained his Ph.D from TU Delft on a research project on boundary layer laminarisation by suction. The academic year 1966-1967 was spent at the Lockheed Georgia Research Lab where he did pioneering research on the use of Computer Graphics for airfoil design. After his return to Delft this experience led to a two-track research program combining the basic research of staff and students in viscous flows with that of design oriented student- and staff projects. At TU Delft he held various positions such as assistant-, associate- and full professor. In recognition of his contributions to boundary layer research he was invited in 1996 by the German GAMM ( Gesellschaft fuer Angewandte Mathematik und Mechanik) and DGLR( Deutsche Gesellschaft fuer Luft- und Raumfahrt) to present the prestigious Prandtl Memorial Lecture. This lecture with the title “Looking back at 40 years of teaching and research in Ludwig Prandtl’s heritage of boundary layer flows“ gives a good summary of the research by him and his associates. In addition to teaching and research he made important contributions to the management of the Department. (Dean( 1972-1974), vice-Dean (1986-1991), Dean(1991-1997). An important occurrence in his last period as Dean was the demise of Fokker (1996) that threatened to have a large negative effect on the Department. This crisis was overcome and Delft Aerospace managed to remain one of the leading European Aerospace Engineering Departments. After his formal retirement in 1997 he remained active for some more years in representing the Department in international post graduate programs such as ECATA and SpaceTech. During his active years at the University he had taken part in various EU projects. Up until now he continues his support to the European Union by acting as reviewer for research projects such as AWIATOR and AVERT. Moreover he has led important EU studies such as the “Education Study” on the future of European Aerospace Engineering Education and an “Accreditation Study” on possible future accreditation systems for European Aerospace Engineering Departments.