Title :
Non-isentropic effects on the WRDC 20 inch hypersonic wind tunnel calibration
Author :
Buck, Melvin L. ; Draper, Alfred C.
Author_Institution :
Wright Res. & Dev. Center, Wright-Patterson AFB, OH, USA
Abstract :
An experiment was conducted in the Wright Research and Development Center 20-in. hypersonic wind tunnel to assess nonisentropic effects on the test section Mach number. Pressure measurements were made on a blunt 5° cone. These pressures were then compared with a parabolized Navier-Strokes code to define the free-stream Mach number. The results indicate that the nonisentropic effects are not significant. There is no pronounced difference in the Mach number from that determined by the more conventional Pitot pressure probe survey
Keywords :
calibration; hypersonic flow; pressure measurement; wind tunnels; 20 inch; WRDC; calibration; free-stream Mach number; hypersonic wind tunnel; nonisentropic effects; parabolized Navier-Strokes code; pressure measurement; Calibration; Character generation; Computational fluid dynamics; Petroleum; Pollution measurement; Pressure measurement; Probes; Reservoirs; Temperature; Testing;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1989. ICIASF '89 Record., International Congress on
Conference_Location :
Gottingen
DOI :
10.1109/ICIASF.1989.77655
