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Vacuum pumping system of test equipment of ion thrusters

An ion thruster and vacuum pumping technology, which is applied in space navigation equipment, simulation devices of space navigation conditions, transportation and packaging, etc., can solve the problem of changing plume field distribution, inaccurate measurement results, and gas molecules returning to the discharge chamber and other problems, to achieve the effect of improving reliability, improving operating life, and reducing sputtering deposit pollution

Active Publication Date: 2015-10-28
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology

If the test equipment is not properly configured, a large number of background gas molecules in the vacuum chamber may return to the discharge chamber, or change the plume field distribution, etc., resulting in inaccurate measurement results

Method used

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  • Vacuum pumping system of test equipment of ion thrusters
  • Vacuum pumping system of test equipment of ion thrusters
  • Vacuum pumping system of test equipment of ion thrusters

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Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] The invention provides a vacuum pumping system of ion thruster test equipment, such as figure 1 As shown, including the vacuum pumping device of the vacuum container in the main cabin and the vacuum pumping device of the vacuum container in the auxiliary cabin, the vacuum container in the main cabin requires the ultimate vacuum degree to be less than 1.0×10 -5 Pa, the background vacuum is less than 1.3×10 -4 Pa, the working vacuum is less than 5.0×10 -4 Pa (14sccm xenon load); the vacuum pumping device of the auxiliary cabin vacuum container must meet the vacuum degree of the auxiliary cabin less than 1.0×10 -2 Pa's request.

[0030] The vacuum pumping device of the vacuum vessel of the main cabin is used to realize the vacuum environment of the vacuum vessel of the main cabin during the ion thruster test. The vacuum pumping device of the main c...

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Abstract

The invention discloses a vacuum pumping system of test equipment of ion thrusters. Through the adoption of the vacuum pumping system disclosed by the invention, a vacuum environment can be provided for the ground test equipment of the ion thrusters, and the special requirements that the ground test equipment of the ion thrusters is oil-free vacuum, is large in pumping capability, prevents sputtering, has a plasma-protection function, and is high in reliability are met. The vacuum pumping system disclosed by the invention comprises a vacuum pumping device of a main chamber vacuum container, and a vacuum pumping device of an accessory chamber vacuum container, wherein the vacuum pumping device of the main chamber vacuum container comprises a coarse pumping assembly of the main chamber vacuum container, a transition pumping assembly of the main chamber vacuum container, and a high vacuum sucking assembly of the main chamber vacuum container. Firstly, the main chamber vacuum container is pumped to 10Pa by using the coarse pumping assembly of the main chamber vacuum container; then, the main chamber vacuum container is pumped to 10-2Pa by using the transition pumping assembly of the main chamber vacuum container; finally, when the main chamber vacuum container is pumped to below 1.0*10-4Pa by using the high vacuum sucking assembly of the main chamber vacuum container, a test is started.

Description

technical field [0001] The invention relates to the technical field of vacuum pumping, in particular to a vacuum pumping system of ion thruster test equipment. Background technique [0002] Ion thrusters are currently one of the most advanced space propulsion systems, and have been widely used in spacecraft missions in developed countries with foreign aerospace technology. In a certain sense, the ion thruster is an electric vacuum device, and its performance must be tested under vacuum conditions in order to draw correct conclusions. The ion thruster vacuum test equipment is different from other vacuum test equipment, it is used in the case of large gas load, large ion kinetic energy, and many ion sputtering products. Ion thruster test equipment has different requirements according to different uses. The performance test of the ion thruster is mainly to measure parameters such as thrust, specific impulse, propellant utilization rate and efficiency of the ion thruster. The...

Claims

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Application Information

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IPC IPC(8): B64G7/00
Inventor 杨建斌柏树徐金林刘玉魁骆水莲
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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