Accession Number : AD0784077

Title :   Vapor Screen Technique Development at the Ballistic Research Laboratories.

Descriptive Note : Final rept.,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Nietubicz,Charles J.

Report Date : JUN 1974

Pagination or Media Count : 32

Abstract : Results of the vapor screen technique development in the Ballistic Research Laboratories Supersonic Wind Tunnel No. 1 are presented. A standard light source in conjunction with a schlieren mirror system are compared photographically with the results of using a laser light source. The amount of condensation required, photographic equipment and testing procedure are presented. Vapor screen pictures of main body vortices, photographed through a downstream prism as well as through the tunnel access window are shown. A unique photograph showing a set of vortices being generated prior to separation is presented. The wind tunnel tests were conducted at Mach number 2.25. (Author)

Descriptors :   *Flow visualization, *Supersonic wind tunnels, *Vortices, Vapors, Mist, Wind tunnel models, Laser beams, Scattering, Photographic equipment, Test methods

Subject Categories : Test Facilities, Equipment and Methods
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE