Propellant continuous supply system for electric propulsion engine long time test
A technology for supplying system and propellant, applied in the field of electric propulsion, can solve the problem of not being able to meet the performance requirements of electric propulsion engine, and achieve the effect of reducing the impact
Active Publication Date: 2017-10-20
BEIHANG UNIV
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Problems solved by technology
[0004] At present, there are various electric propulsion experiment platforms in China, but the common propellant supply system cannot meet the performance requirements of electric propulsion engines for long-term tests. Therefore, it is necessary to design a set of corresponding propulsion systems based on the needs of long-term tests. agent continuous supply device
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[0043] Air source part: The air source part is composed of main air source and auxiliary air source, mainly including electronic scale 1 / 2, high pressure air source 3 / 4, gas cylinder rear filter 5 / 6, one-way valve 7 / 8, high pressure hand Valves 11 / 12 and stainless steel clean pipe and VCR fittings. Taking the main gas source as an example, the high-pressure gas cylinder-main 4 is connected to the stainless steel pipeline through a CGA580 joint; the rear filter of the gas cylinder-the two ends of the main 5 are welded to the stainless steel pipeline; the one-way valve-the two ends of the main 8 are connected to the stainless steel pipeline The pipeline is welded and sealed, and the high-pressure hand valve-main 12 is connected to the stainless steel pipeline through the VCR joint;
[0044] Under normal circumstances, the main air source or auxiliary air source works independently to supply air to the electric propulsion engine independently. The procedure for switching the gas...
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The invention provides a propellant continuous supply system for an electric propulsion engine long time test based on electric propulsion engine long time test task requirements. The system is composed of five parts of air sources, a blowout pipeline, pressure regulation, mass flow regulation and pressure monitoring in a propellant pipeline. A scheme of dual air sources matched with the blowout system is adopted, test stop caused by replacement of the air source and damages to the electric propulsion engine itself by a foreign gas are avoided; multiplexed backup is set for mass flow regulation for recalibration on a flow meter during a long time test process, and through additionally arranging valves before and behind the flow meter, a vacuum chamber, the propellant pipeline and the flow meter are independent, and assembly and disassembly of the flow meter in a vacuum environment are not influenced. Requirements on the propellant supply system at aspects of flow, pressure and reliability by the electric propulsion engine long time test can be met.
Description
Technical field: [0001] The invention belongs to the technical field of electric propulsion, and relates to a propellant continuous supply system used for long-term tests of electric thrusters. Background technique: [0002] Electric propulsion is an advanced propulsion method that converts electrical energy into kinetic energy of propellant to obtain reaction thrust. Compared with traditional chemical propulsion methods, electric propulsion has the advantages of high specific impulse, high control precision, and long life. After 60 years of development, the international electric propulsion technology has become increasingly mature. [0003] With the diversification of domestic space mission requirements, the ground test of electric propulsion has gradually become more complicated. The propellant supply system is a crucial part of the electric propulsion ground test system, which controls the flow, pressure, state and other physical parameters of the propellant. Each param...
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IPC IPC(8): G01M15/02
Inventor 汤海滨张广川任军学姜逸伟王一白
Owner BEIHANG UNIV