Accession Number : AD0760132

Title :   Specie Number Density, Pitot Pressure, and Flow Visualization in the Near Field of Two Supersonic Nozzle Banks Used for Chemical Laser Systems.

Descriptive Note : Final rept. 11 Mar 71-5 May 72,

Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AIR FORCE STATION TENN

Personal Author(s) : Whitfield,D. L. ; Lewis,J. W. L. ; Williams,W. D.

Report Date : MAY 1973

Pagination or Media Count : 198

Abstract : An experimental investigation of the gas dynamics in the near field of two supersonic nozzle banks used for chemical laser systems was conducted in the von Karman Gas Dynamics Facility (VKF) of the AEDC. The exhaust gases were simulated by mixtures of hydrogen, helium, and nitrogen. Pitot pressure measurements were made, and the electron beam fluorescence technique was used to obtain specie number density and flow visualization photographs. In addition, a few velocity measurements were made using the laser Doppler velocimeter measuring technique. An analytical investigation of the flow inside the nozzles for various reservoir conditions was also conducted. (Author Modified Abstract)

Descriptors :   (*GAS LASERS, NOZZLE GAS FLOW), (*NOZZLE GAS FLOW, *FLOW VISUALIZATION), SUPERSONIC FLOW, FLOW FIELDS, VELOCITY, PRESSURE, DENSITY, HELIUM, NITROGEN, HYDROGEN, TEST EQUIPMENT, PHOTOGRAPHS

Subject Categories : Lasers and Masers
      Photography
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE