Accession Number : AD0685517

Title :   INVESTIGATION OF DISTRIBUTION OF PRESSURE ON SOME STAR-SHAPED BODIES AT MACH APPROX. = 4,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Gonor,A. L. ; Shvets,A. I.

Report Date : 26 JUL 1968

Pagination or Media Count : 12

Abstract : The results of an experimental investigation of pressure distribution on star-like bodies in supersonic flows in an aerodynamic wind tunnel at M = 3.85 plus or minus 0.1 and Re = 6,000,000 are presented. The models, experimental setup, and measuring techniques are described in detail. Pressure measurements were obtained by manometers with tetrabromoethane liquid (gravity = 2.96 g/cm cc). The boundary layer effect upon the flow structure for various angles between wings is investigated and shock wave structures for various angles of attack (from 5 to 15 deg) are analyzed. A comparison of the experimental results with the exact theoretical data obtained previously by the author shows good agreement for all models. The ratios between the wave drags of equivalent circular cones and wave drags of models calculated from experimental data indicate that in certain cases predicted by theory the wave drag is reduced several times. (Author)

Descriptors :   (*AERODYNAMIC CONFIGURATIONS, SUPERSONIC CHARACTERISTICS), PRESSURE, DISTRIBUTION, REYNOLDS NUMBER, BOUNDARY LAYER, SHOCK WAVES, ANGLE OF ATTACK, DRAG, CONICAL BODIES, WIND TUNNEL MODELS, USSR

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE