Orbit and attitude control integrated space marching system based on electric pump

Abstract

The invention discloses an orbit and attitude control integrated space marching system based on an electric pump. The orbit and attitude control integrated space marching system comprises a high-pressure air bottle, an oxidizing agent storage tank, a fuel storage tank, an electric pump system, an oxidizing agent pressure accumulator, a fuel pressure accumulator, an orbit-control engine and attitude-control engines; the high-pressure air bottle is connected with the oxidizing agent storage tank and the fuel storage tank through a pipeline I, the oxidizing agent storage tank and the fuel storagetank are connected with the electric pump system through a pipeline II and a pipeline III correspondingly, the electric pump system is connected with the orbit-control engine and the oxidizing agentpressure accumulator and the fuel pressure accumulator through a pipeline V and a pipeline VI correspondingly, and the oxidizing agent pressure accumulator and the fuel pressure accumulator are connected with the attitude-control engines through a pipeline VII and a pipeline VIII correspondingly. The electric pump system controls the rotating speed and the lift of a motor pump through an actuator,the pressure and flow of an oxidizing agent and fuel supplied for the engines are controlled, the adjustment is convenient, and the supplying requirements for a propellant of large-range thrust adjustment and multi-time starting and stopping of the orbit-control engine can be met.

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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