INITIATION AND STABILIZATION OF AN OBLIQUE DETONATION WAVE BY A HIGH-SPEED SPHERICAL PROJECTILE IN A REACTIVE GAS
V. A. Vasetskii, V. M. Grishchenko, V. V. Leshchevich, O. G. Penyaz’kov
A.V. Luikov Institute of Heat and Mass Transfer, National Academy of Sciences of Belarus, Minsk, Belarus
Keywords: light-gas gun, ballistic experiment, supersonic hydrogen-oxygen flow, oblique detonation wave
Abstract
This paper presents experimentally obtained shadowgraph images of the shock wave structure in an unsteady supersonic reacting flow of a hydrogen-oxygen mixture, generated by a spherical projectile flying at a velocity exceeding the self-sustained detonation velocity. The conditions for the formation of a stabilized oblique detonation wave, initiated by the high-speed projectile both in free space and in the presence of a wedge surface placed at a certain distance along the projectile trajectory, are determined.
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