At present, launchers of light ("Cosmos", "Tsyklon"), medium ("Sojuz", "Zenit") and heavy ("Proton") classifications are used in Russia for injection of SC and space systems deployment (Fig. 1). The available launch vehicles satisfy principally the demands of SC under operation. One of the most important tasks in the field of space rocket enginemanufacturing is a provision of reliable operation of orbit insertion engines and modernization thereof, augmentation of their power performance, margins of serviceability of main aggregates and service life.