METHOD OF LOWERING DETACHABLE PART OF ROCKET CARRIER STAGE AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2020 - IPC B64G1/26 

FIELD: rocket equipment.

SUBSTANCE: group of inventions relates to carrier rockets (CR) with liquid-propellant rocket engines (LPE). Method of lowering the detachable part (DP) of the CR step is based on orientation and stabilization of the position of the DP propulsive assembly forward by the propulsion plant, application of control moments by means of gasification products discharge from tanks through gas-jet nozzles (GJN), and blowing of gas into boundary layer on side surface of DP. At the extra-atmospheric section of the DP descent trajectory and in rarefied layers of the atmosphere, the DP angular motion of the space objects is controlled by GJN. During DP descent, control moments are continuously compared in channels of angular stabilization of pitch and DP, calculated by changing parameters of boundary layer and gas-active system at the same mass second flow rates taking into account actual parameters of motion. When control moments are exceeded due to change of boundary layer parameters control in channels of pitch and DP oscillation is carried out by gas injection system (GIS) into boundary layer of DP, for control in channel of bank GJN is used. In the device for implementation of the method in the pitch and DP channels there installed is the supercharged rocket engine to the boundary layer, which are connected through the controlled valves to supply lines with balloon gas cylinders.

EFFECT: high efficiency of DP lowering.

2 cl, 3 dwg