Accession Number : ADA019412

Title :   The Study of the Effect of Shock Interaction of Axisymmetric Concave Conic Shapes in Hypersonic Flow.

Descriptive Note : Final technical rept. Dec 73-Dec 74,


Personal Author(s) : Richards,Bryan E. ; Kenworthy,Michael A.

Report Date : SEP 1975

Pagination or Media Count : 67

Abstract : Heat transfer and pressure distributions have been measured on three concave biconic configurations in the von Karman Institute Longshot free piston wind tunnel at M = 15 and 20. The test flow parameters achieved closely simulate aerodynamic re-entry conditions. Information derived from the measurements and also single spark and high speed cine schlieren flow visualisation photographs enabled a qualitative description of the complicated two-shock steady flow system to be made and to explain the reason for the very high pressures and heat transfer rates measured on the concave surface. The effect of changing tip geometry, surface roughness, model incidence and flow conditions on the interaction is examined experimentally. (Author)

Descriptors :   *Shock waves, *Hypersonic flow, *Nose cones, Surface roughness, Reentry vehicles, Wind tunnels, Ablation, Flow fields, Shock tubes, Nitrogen

Subject Categories : Guided Missile Reentry Vehicles
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE