FORMATION OF HIGH-VELOCITY MICROJETS IN DIFFERENT VARIANTS OF SUPERDEEP PENETRATIONS. M. Usherenko, O. I. Koval', and Yu. S. Usherenko UDC 621.762.4.04. 534.2 The process of formation of a composite material in different variants of dynamic loading of an obstacle of 40 steel by a flux of high-velocity microparticles has been considered. The influence of the loading conditions on the realization of superdeep penetration has been analyzed. Scientific-Research Institute of Pulsed Processes with Pilot Production, Minsk, Belarus. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 1, pp. 93-97, January-February, 2003. Original article submitted July 29, 2002.