S. M. Usherenko,a L. G. Korshunov,b and O. I. Koval'a UDC 534.2 Consideration is given to the possibility of controlling the efficiency of the process of superdeep penetration of a high-velocity microstriker flux into metal obstacles due to the employment of ballast elements in the jet and to additional supply of energy in compression by an explosive charge along the external perimeter. aScientific-Research Institute of Pulsed Processes with Pilot Production, Minsk, Belarus; bInstitute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 6, pp. 3-6, November-December, 2002. Original article submitted April 29, 2002. JEPTER7492020024 JEPTER749204