Accession Number : AD0731566

Title :   High L/D Supersonic Lifting Systems.

Descriptive Note : Final rept. Jan-Jul 71,

Corporate Author : FLIGHT DYNAMICS RESEARCH CORP BURBANK CALIF

Personal Author(s) : Alperin,Morton

Report Date : JUL 1971

Pagination or Media Count : 55

Abstract : The system investigated is comprised of two elements whose shape and relative position create a beneficial interference effect similar to that achieved by swept wings. The particular geometry of the Compound System is investigated for the capability of recovering loss in L/D resulting from the airfoil thickness without the favorable interference effect. Although the basic concept was conceived in terms of triangular shaped airfoils with interfering shock waves which interacted with the airfoil boundary layers, the information derived from this simplified analysis has been utilized to derive airfoil shapes to accomplish the desired effect without undesirable shock boundary layer interactions. (Author)

Descriptors :   (*SUPERSONIC AIRFOILS, AERODYNAMIC CHARACTERISTICS), DRAG, LIFT, INTERACTIONS, MATHEMATICAL ANALYSIS, SHOCK WAVES, WIND TUNNEL MODELS, OPTIMIZATION

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE