This volume contains the contributions to the scientific anniversary colloquium in honor of the 100th birthday of Hermann Schlichting, Braunschweig, September 2007. His outstanding achievements in boundary layer theory and aircraft aerodynamics are reviewed by invited scholars. Contributions of current leading research by the institutes formerly lead by Hermann Schlichting, the Institute of Fluid Mechanics of the Technische Universitat Braunschweig and the Institute of Aerodynamics and Flow Technology of German Aerospace Center, in the fields of numerical flow simulation, experimental...