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The Steady Struture of the Wall Erosion Proceeding in H Thrusters

Author: HeLinLin
Tutor: YuDaRen
School: Harbin Institute of Technology
Course: Power Machinery and Engineering
Keywords: Hall thruster Wall corrosion Structural stability Abnormal corrosion
CLC: V439.2
Type: Master's thesis
Year: 2010
Downloads: 42
Quote: 1
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Abstract


Hall thruster wall corrosion restricting a major factor in the life of the thruster . This article will focus on the wall of the Hall thruster corrosion mechanism inherent in the major phenomena analysis and research , theoretical studies of corrosion on the wall of the Hall thruster Analyzer wall corrosion stage characteristics for the Hall thruster is wall corrosion mechanism to provide a theoretical basis . First , a more detailed exposition of the Hall thruster wall the corrosion morphology evolution of structural stability research ideas and research methods . First Hall thruster wall corrosion morphology of the phenomenon for a more comprehensive exposition , and lay the foundation for the following research mechanism ; second section describes the the wall corrosion problems of the hot research study dynamic and the main point is not yet conclusive the various points of view of the formation mechanism of anomalous corrosion , and a variety of viewpoints rationality of analysis ; Finally , the use of analogy put forward the point of view of the use of the structural stability analysis of the Hall thruster wall corrosion mechanism . Second stage focused on Hall thruster wall corrosion characteristics . First, calculate the the Hall thruster axial wall evolution , analysis of the evolution of the axial pits analyze Xiaokeng existence ; analysis of the ideal ion incident conditions under circumferential the rectangular groove wall evolution followed by calculation results analyze the importance of the factors that affect the evolution of the wall surface ; then to the evolution of the wall surface of the rectangular groove , based on the parameters obtained by the PIC simulation analog peripheral ; by the calculation result of the axial and circumferential statistics corrosion rate, the analysis of the hall thruster wall corrosion characteristics of the stage . Then Hall thruster wall corrosion weeks to the evolution of the shape of the positive feedback mechanism theory analysis . The abnormal etched to form the basis of a positive feedback mechanism intensified . Finally, to form part of the basic form of the anomalous corrosion mechanism analysis . Can visually observed abnormal corrosion to form the ditch deeper and deeper , and there is an angle in the axial direction , for the mechanism of these phenomena . By analyzing the distribution of the ion parameters to the analysis of the reasons for this phenomenon . Further by the above calculation and analysis of to obtain ions weeks clued characteristics and angular characteristics .

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Propulsion system ( engine, propeller ) > Special engine > Plasma engines
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