Accession Number : AD0706531

Title :   HYPERSONIC LAMINAR SEPARATION ON A CONE WITH SLIP FLOW,

Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V STUTTGART-VAIHINGEN (WEST GERMANY)

Personal Author(s) : Album,H. Harvey

Report Date : 14 APR 1969

Pagination or Media Count : 8

Abstract : An experimental investigation was made of hypersonic, axisymmetric, laminar separation of a thick, slip-flow viscous layer on a cone that is isothermal and slightly cooled. Minutely blunted cones with half-angles of 5 deg and attached compression flares from 20 to 90 deg were used. The freestream had a Mach number of about 14.5 at the model tip and was slightly divergent. Experimental observations included surface-pressure measurements and Pitot surveys of attached and separated flows. These measurements are converted into approximate velocity profiles, Mach number profiles, displacement thicknesses, and shock shapes. The flows just upstream of separation interaction were influenced by (1) tip bluntness as far as 1000 tip diameters downstream of the tip, (2) weak interaction, and (3) the slight divergence of the freestream. Nevertheless, surface pressures and approximate displacement thicknesses for the separation-interaction regions on the cones are correlated by hypersonic, free-interaction, similarity variables that are obtained from a 'Chapman analysis.' (Author)

Descriptors :   (*REENTRY VEHICLES, *FLOW SEPARATION), HYPERSONIC CHARACTERISTICS, LAMINAR FLOW, CONICAL BODIES, INTERACTIONS, WEST GERMANY

Subject Categories : Aerodynamics
      Guided Missile Reentry Vehicles
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE