‡a
An investigation of a ground vortex formed by the interaction of a rotor wake with free air in the presence of a groundplane, 1972 t.p. (Michael Charles Sullivan; M.S. in engineering, University of Washington; Department, Aeronautics and Astronautics)
‡a
university of washington department of aeronautics and astronautics
‡A
University of Washington. Department of Aeronautics and Astronautics
‡9
1