MEASUREMENT OF PRESSURE DISTRIBUTIONS ON AGARD-E MODEL AT THE NAL LARGE HYPERSONIC WIND TUNNEL

摘要

An experimental study to investigate the characteristics of the hypersonic flow was performed at the NAL (National Aerospace Laboratory). This paper presents the results of experimental pressure distributions on an AGARD-E (hemisphere) model in the NAL large hypersonic wind tunnel at a nominal Mach number of 10 and free-stream Reynolds number per meter of 1.6, 2.6 and 3.7 x 10~6. The experimental results are discussed to evaluate the effects of the modification of the nozzle in comparison with the CFD and the theory. Moreover, the rate of specific heats T was also experimentally estimated by observing the detached shock wave from schlieren photographs.