Satoshi Nonaka, Hiroyasu Mizuno, Kazuyoshi Takayama
37th Aerospace Sciences Meeting and Exhibit, 1999
© 1998 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. The shock shapes over spheres, sharp-cones and double-cones are measured in a ballistic range in the intermediate hypersonic regime. The measurement is made in air for spheres with diameter of 14 and 30 mm, sharp-cones with half-angles of 30- and 45-degree, a double-cone with 25- and 65-degree half-angle, flight speeds between 2.43 and 3.85 km/s and ambient pressures between 600 and 10000 Pa. The flowfield is visualized by shadowgraph or schlieren method using a short-pulse Nd-YAG laser as the light source. The obtained shock shapes are compared with theoretical and calculated values, and the shock layer thickness are shown to vary due to the test conditions, demonstrating the effect of real-gas phenomena and angle of attack.