Variable thrust liquid engine electric drive control propellant supply system

Abstract

The invention provides a variable thrust liquid engine electric drive control propellant supply system, which comprises: a control terminal used for controlling the on-off of a power supply, the rotating speeds of a fuel pump motor and an oxidant pump motor, and the opening and closing of various valves of an engine; a fuel pump motor controller used for adjusting the rotating speed of the fuel pump motor; an oxidant pump motor controller used for adjusting the rotating speed of the oxidant pump motor; the fuel pump motor for driving a fuel pump; the oxidant pump motor used for driving an oxidant pump; the fuel pump for conveying fuel to a thrust chamber; the oxidant pump used for conveying an oxidant to the thrust chamber; and a direct-current power supply used for supplying power to thefuel pump motor controller and the oxidant pump motor controller. According to the invention, the original mechanical turbine is replaced by an electric drive motor control mode, and the fuel pump motor and the oxidant pump motor are controlled by the control terminal to be repeatedly started and paused, so that the purposes of repeated starting of the liquid engine and accurate thrust adjustmentare achieved, and the practicability of the liquid engine in the field of recycling and reusing is greatly improved.

Description

technical field [0001] The present disclosure relates to the technical field of liquid engines, in particular to an electrically driven and controlled propellant supply system for variable thrust liquid engines. Background technique [0002] Liquid propellant rocket engines are referred to as liquid rocket engines for short, and usually consist of thrust chambers, propellant supply systems, valves, regulators, and engine assembly components. Among them, the propellant supply system is a crucial part. Its function is to transport the liquid propellant from the storage tank to the thrust chamber as required. It is usually divided into two types: extrusion type and pump type. The extrusion supply system is to use the inert gas (nitrogen, helium, etc.) of the high-pressure cylinder or other gas sources to introduce the propellant tank through the pressure reducer, and squeeze the propellant in the tank to the thrust chamber. The pump pressure supply system uses a turbo pump to ...

AI Technical Summary

Problems solved by technology

However, the traditional liquid engine drives the turbine through the gas generated by the one-time powder starter. If you want to start repeatedly, you need to install multiple powder starters, which greatly reduces the reliability of the system.

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