Accession Number : AD0271677

Title :   LABORATORY INVESTIGATION OF THE BASIC NATURE OF LOW DENSITY GAS FLOW AT HIGH SPEEDS

Corporate Author : VIRGINIA UNIV CHARLOTTESVILLE RESEARCH LABS FOR THE ENGINEERING SCIENCES

Personal Author(s) : SCOTT,JOHN E. JR. ; KUHLTHAU,A.R.

Report Date : FEB 1962

Pagination or Media Count : 1

Abstract : The mechanism whereby the neutral molecules of a rarefied gas exchange momentum and energy during collision with a solid surface is treated. A quantitative description of this phenomenon enables a more accurate prediction of the aerodynamic drag and heat transfer associated with high speed flight at high altitudes. Molecular beam scattering from a high speed target rotor is to be performed. An aerodynamic molecular beam system will provide a nearly isoenergetic beam of neutral molecules of large intensity. A mechanical velocity selection device has been designed in order to enable the determination of the distribution of molecular velocities in the beam. An orifice probe measurement is to be made of free molecular curved Couette flows. A concentric cylinder apparatus will be used for the generation of the flow field in the annulus betwen the cylinders. (Author)

Descriptors :   *HYPERSONIC CHARACTERISTICS, *MOLECULAR BEAMS, *RAREFIED GAS DYNAMICS, *SUPERSONIC FLOW, FLUID MECHANICS, GASES, GEOMETRY, MOLECULES, ROTOR BLADES (ROTARY WINGS), ROTOR BLADES (TURBOMACHINERY), SCATTERING

Distribution Statement : APPROVED FOR PUBLIC RELEASE