Method for monitoring plume contamination of attitude control engine of spacecraft

A pollution monitoring and engine technology, applied in the aerospace field, can solve problems such as plume pollution of spacecraft attitude control engine, and achieve the effects of stable and reliable test process, improved sensitivity, and increased accuracy

Active Publication Date: 2010-11-03
NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of the plume pollution of the spacecraft attitude control engine, and propose a monitoring method for the plume pollution of the spacecraft attitude control engine

Method used

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  • Method for monitoring plume contamination of attitude control engine of spacecraft
  • Method for monitoring plume contamination of attitude control engine of spacecraft

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Experimental program
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Embodiment

[0031] 1) In the test, the N204 / MMH engine nozzle 4 that is often used by spacecraft is placed in the vacuum chamber 2, and the quartz crystal microbalance detector 3 or 6 is placed at the same time, the movable support 5 is adjusted, and the quartz crystal microbalance detector is adjusted. 6. The angle of view of the sample is 180°, connect relevant water, electricity, and gas auxiliary equipment, adjust the balance communication, and close the vacuum chamber 2, and observe the state of the experimental equipment through the vacuum chamber observation window 1;

[0032] 2) Turn on the vacuum pumping system 9, proceed in the manner of starting the mechanical pump and starting the molecular pump until the vacuum degree of the system is less than 1×10 -3 Pa, observe the state of the experimental equipment through the observation window 1 of the vacuum chamber;

[0033] 3) Open the gas supply cylinder 11, control the ignition of the N204 / MMH engine by the ignition control cabine...

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Abstract

The invention relates to a method for monitoring plume contamination of an attitude control engine of a spacecraft, in particular to a method for monitoring plume contamination of an attitude control engine of a spacecraft by adopting a quartz-crystal microbalance, belonging to the technical field of aviation. In a monitoring device for the plume contamination of the attitude control engine of the spacecraft, a set of quartz-crystal microbalance monitor is arranged on the sliding rail of the existing space electric propulsion ground simulation testing equipment, and two sets of quartz-crystal microbalance monitors are arranged behind an engine nozzle on the surface of a vacuum chamber. In the method, an attitude engine is adopted to ignite so as to ensure that the engine jets heat flow gas, and contaminants are generated when the gas is condensed; and the frequency and temperature of the quartz-crystal microbalance are monitored online in situ and saved. The method improves the sensitivity of plume contamination monitoring of the attitude control engine in China reaching 1.10*10-9 to 4.42*10-9, and the testing process is stable and reliable and has good repeatability, so the method is suitable for large-scale tests.

Description

technical field [0001] The invention relates to a method for monitoring plume pollution of a spacecraft attitude control engine, in particular to a method for monitoring plume pollution of a spacecraft attitude control engine by using a quartz crystal microbalance, and belongs to the technical field of aerospace. Background technique [0002] The interaction between the spacecraft and the space environment represented by the plume pollution effect of the attitude control engine is one of the indispensable supporting technologies for the development of aerospace technology. The spacecraft needs a considerable number of attitude-orbit control engines to maintain its orbit and attitude stability. When these engines work in the space-rare gas environment, the jet fluid will expand freely to the external environment to form a plume. The plume will not only produce plume aerodynamic effects, plume aerothermal effects, and plume interference effects on the field of view and microwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00
Inventor 颜则东王先荣王鷁姚日剑柏树冯杰
Owner NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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