Pumping-pressure dual-mode liquid-propellant rocket engine system

Abstract

The invention relates to a pumping-pressure dual-mode liquid-propellant rocket engine system, and belongs to the field of filling of spacecraft high-pressure storage tank propellants. The system comprises a thrust chamber, a high-pressure gas-storage tank, a fuel gas generator, two trans-filling systems, an oxidant target storage tank and a fuel target storage tank, wherein each trans-filling system comprises a turbine pump, a main valve, a trans-filling control valve, a one-way valve and a flow regulator, each turbine pump communicates with the fuel gas generator and the corresponding flow regulator, each flow regulator communicates with the corresponding trans-filling control valve and the main valve separately, each trans-filling control valve communicates with the corresponding one-wayvalve, the high-pressure gas-storage tank is provided with two output ends, the two output ends communicate with the fuel gas generator in branches, one one-way valve communicates with the oxidant target storage tank, the other one-way valve communicates with the fuel target storage tank, and the two main valves both communicate with the thrust chamber. The system can carry out orbit insertion, orbit transfer and other tasks as the upper stage or active power of other spacecrafts, and can also trans-fill an attitude control engine storage tank with propellants at the upper stage or in other spacecraft main storage tanks.

Description

technical field [0001] The invention belongs to the field of propellant filling for high-pressure storage tanks of spacecraft, and relates to a pump pressure dual-mode liquid rocket engine system. Background technique [0002] At present, in the domestic upper-level power system, the main engine system and the attitude control engine system are independent of each other. The attitude control engine needs to carry all the propellants required during the entire mission. The scale and structural quality of the attitude control engine supply tank are relatively large. Big. In addition, the total thrust of the attitude control engine is limited by the volume of the attitude control tank. In order to ensure the reliability of the mission, the volume of the attitude control tank will generally have a certain margin, and the excess attitude control propellant is for the upper stage. Increased structural weight and reduced load. At the same time, if an abnormal situation occurs dur...

AI Technical Summary

Problems solved by technology

At the same time, if an abnormal situation occurs during the upper-level work, the attitude control system needs to add a lot of extra work, and it is very likely that the attitude control propellant will be insufficient.

Images