Accession Number : AD0697179

Title :   RESEARCH ON ELLIPTICAL AIRFOIL WITH JET CIRCULATION CONTROL.

Descriptive Note : Final rept.,

Corporate Author : TEXAS UNIV AUSTIN DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Yuan,S. W. ; Westkaemper,J. C. ; Kishi,J. S.

Report Date : JAN 1969

Pagination or Media Count : 86

Abstract : Results are presented from an experimental investigation of the performance characteristics of elliptical airfoils with a jet-flap. Several 18% elliptical airfoils with 12-inch chord were tested in a subsonic wind tunnel. Circulation control was provided by ejecting air from the model airfoil through spanwise slots in the trailing edge of the airfoil. Tests included models mounted with a sweep angle with the tunnel flow direction, with spanwise variation in jet slot width, and with different jet-flap angles. The results are presented in graphical form for the purpose of comparing characteristics. (Author)

Descriptors :   (*AIRFOILS, CONTROL JETS), (*HELICOPTER ROTORS, *CONTROL JETS), ELLIPSOIDS, FLAPS(CONTROL SURFACES), WIND TUNNEL MODELS, MODEL TESTS, TRAILING EDGE

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE