Integrated space propulsion system with orbit and attitude control based on electric pump

Abstract

The invention discloses an electric pump-based rail attitude control integrated space propulsion system, which includes a high-pressure gas cylinder, an oxidant storage tank, a fuel storage tank, an electric pump system, an oxidant pressure accumulator, a fuel pressure accumulator, an orbit control engine and The attitude control engine, the high-pressure gas cylinder is connected to the oxidant storage tank and the fuel storage tank through pipeline 1, and the oxidant storage tank and fuel storage tank are respectively connected to the electric pump system through pipeline 2 and pipeline 3, and the electric pump system is respectively connected through pipeline 5 and pipeline 6 It is connected with the rail control engine, the oxidant pressure accumulator and the fuel pressure accumulator, and the oxidant pressure accumulator and the fuel pressure accumulator are respectively connected with the attitude control engine through pipeline seven and eight. The electric pump system controls the speed and head of the motor pump through the driver, and then controls the pressure and flow of the oxidizer and fuel supplied to the engine. It is easy to adjust and can meet the propellant supply requirements of a wide range of thrust adjustment and multiple starts and stops of the rail control engine.

Description

technical field [0001] The invention relates to the field of space vehicle power systems, in particular to an electric pump-based orbit attitude control integrated space propulsion system. Background technique [0002] The current chemical propulsion system of space vehicles mainly adopts the high-pressure gas extrusion system scheme, and some adopts the turbo pump booster system scheme. With the rapid development of high-performance lithium battery technology and high-speed lightweight motor technology at home and abroad, especially the smooth flight application of Rocketlab's electric Rutherford engine, the electric pump engine has become a new member of chemical space propulsion. The electric pump-based space propulsion system: 1) Compared with the extrusion propulsion system, the tank pressure is lower and the amount of pressurized gas is less, which greatly reduces the structural weight of the propulsion system and can effectively improve the specific impulse performanc...

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Problems solved by technology

[0003] The object of the present invention is to provide an integrated space propulsion system based on an electric pump for rail and attitude control, so as to solve the problems of high tank pressure, large amount of pressurized gas, and large structural quality of the extrusion propulsion system in the prior art. The problem is that the turbopump propulsion system has a complex structure, multiple starts and deep variable thrust are difficult technical problems

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