Department of Aeroanutics & Astronautics; Instructor 1941-1945; Assistant Professor 1945-1949; Associate Professor 1949-1955; Director, Flight Control Laboratory 1953-1955; Hunsaker Visiting Professor of Aeronautics 1968-1969; Dean of the School of Engineering 1977- 1984; Senior Lecturer in Aeronautics 1984- .
