J. Phys. IV France
Volume 10, Numéro PR11, November 2000
Fourth International Workshop on Ram Accelerators
Page(s) Pr11-109 - Pr11-115
Fourth International Workshop on Ram Accelerators

J. Phys. IV France 10 (2000) Pr11-109-Pr11-115

DOI: 10.1051/jp4:20001112

Experimental study of interaction between oblique detonation wave and rarefaction wave around a hypersonic free projectile

J. Kasahara1, T. Endo2, K. Nishide2, D. Yahata2, T. Fujiwara2 and J.E. Leblanc2

1  Muroran Institute of Technology, Department of Mechanical Systems Engineering, Mizumoto-cho 27-1, Muroran 050-8585, Japan
2  Nagoya University, Center for Integrated Research in Science and Engineering, Chikusa-ku, Furo-cho, Nagoya 464-8603, Japan

Hypersonic projectiles whose speed was beyond the Chapman-Jouguet (C-J) detonation speed, were fired into stoichiometric hydrogen-oxygen premixed gases. The flowfield around the projectile was visualized using a gated CCD camera. A steady-state detonation wave was generated around the projectile. With respect to the flow Mach number behind the wave front, the whole detonation-wave was partitioned into four parts ; (i) strong overdriven detonation wave, (ii) weak overdriven detonation wave, (iii) quasi C-J detonation wave, and (iv) C-J detonation wave. It has been found that a rarefaction wave generated at the projectile shoulder has a significant effect on the structure of the detonation wave.

© EDP Sciences 2000