Accession Number : AD0738610

Title :   Review of MIT Research on Airfoil Dynamics Stall 1964 - 1971.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s) : Ham,Norman D.

Report Date : SEP 1971

Pagination or Media Count : 33

Abstract : Research on the dynamic stall of airfoils and helicopter blades is described, beginning with wind tunnel tests and helicopter flight tests which led to the current research. Flutter criteria, tests of two-dimensional airfoils undergoing large transient motions, and a partial theory of airfoil dynamic stall are presented. The application of the two-dimensional results to the loading and motion of rotor blades due to stall is described. Unsteady boundary layer analyses and tests, and their relationship to the development of a complete flow separation model, to airfoil design, and to blade-vortex interaction effects are summarized.

Descriptors :   (*AIRFOILS, STALLING), (*ROTOR BLADES(ROTARY WINGS), STALLING), AIRFOILS, THEORY, WIND TUNNEL MODELS, TWO DIMENSIONAL FLOW, DYNAMICS, BOUNDARY LAYER, VORTICES, INTERACTIONS, FLIGHT TESTING, HELICOPTER ROTORS, FLOW SEPARATION, MATHEMATICAL MODELS

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE