Accession Number : AD0710694

Title :   A METHOD FOR CALCULATING HELICOPTER VORTEX PATHS AND WAKE VELOCITIES.

Descriptive Note : Final rept. Nov 68-Dec 69,

Corporate Author : AIR VEHICLE CORP SAN DIEGO CALIF

Personal Author(s) : Levinsky,E. S. ; Strand,T.

Report Date : JUL 1970

Pagination or Media Count : 72

Abstract : A simple method is developed for calculating the time averaged velocity field induced at large distances from the rotor by a helicopter in steady horizontal motion. The influence of the ground plane and of horizontal winds on the rotor wake and velocity field is included. (Author)

Descriptors :   (*HELICOPTER ROTORS, *DOWNWASH), VORTICES, VELOCITY, WAKE, FLOW FIELDS, MATHEMATICAL PREDICTION

Subject Categories : Aerodynamics
      Helicopters
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE