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Hall thruster torque counteracting method

A technology of Hall thrusters and thrusters, which is applied in the direction of thrust reversers, aircraft, machines/engines, etc., can solve problems such as the influence of satellite attitude control, and achieve the effects of reducing design difficulty, reducing interference, and reducing propellant quality

Active Publication Date: 2018-07-24
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, all-electric propulsion usually adopts a propulsion mode in which multiple thrusters work in groups, so if the torque direction is not offset in detail in the application, it will seriously affect the attitude control of the satellite.

Method used

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Embodiment Construction

[0028] The movement of ions in the orthogonal electromagnetic field will be deflected by the Lorentz force, as shown figure 1 As shown, its deflection angle and deflection direction are respectively related to figure 1 The strength of the magnetic field is related to the direction of the magnetic field. When the Hall thruster is working, since a large number of ions move in the orthogonal electromagnetic field environment, they will be deflected and ejected in the same direction, and an axial torque will be generated on the thruster. The direction of the torque is related to the direction of the magnetic field, and the direction of the torque can be controlled by designing the positive and negative directions of the excitation current, as shown in the principle figure 2 As shown, the excitation current in the positive direction produces a magnetic field in the positive direction, and a clockwise torque is obtained, whereas the thruster working with the excitation current in ...

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Abstract

A Hall thruster torque counteracting method includes the specific steps that the sizes of torque generated by work of selected Hall thrusters are evaluated and screened, and the Hall thrusters with the close thrust sizes are selected as one-machine objects to work in groups to achieve torque counteraction; the forward direction exciting current direction is determined; according to a space vehiclelayout scheme and a working mode, the torque superposition or counteraction relationship between the thrusters in all installation positions is determined according to the condition that all the thrusters adopt forward direction exciting current to generate the same torque direction; the polarity of each Hall thruster is designed; the exciting current directions of the Hall thrusters with the different polarities are designed; and the polarities of the thrusters with the different polarities are expressed. By the adoption of the method, the torque generated by the thrusters working in groupsis counteracted, and therefore the influence of the torque on space vehicle attitude control is reduced.

Description

technical field [0001] The invention relates to a method for counteracting the torque generated by the Hall thruster on the spacecraft. It belongs to the field of spacecraft propulsion. Background technique [0002] Hall propulsion technology is currently a mature electric propulsion technology used internationally. Most of the geosynchronous orbit satellites of the European Space Agency and Russia use the Hall propulsion system based on the PPS-1350 or SPT-100 model to perform north-south position maintenance tasks. In 2017, Eutelsat designed a unique Hall all-electric propulsion geosynchronous communication satellite. Through the unique design of the three-joint manipulator, the efficiency of the Hall propulsion system was greatly improved, creating the shortest orbital time of 4 months for electric propulsion. record of. It can be seen that with the development of Hall thruster technology in the direction of high power, multi-mode, high specific impulse, and long life, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/24B64G1/40F03H1/00
CPCB64G1/405F03H1/0081B64G1/24B64G1/245F03H1/0075
Inventor 张旭魏鑫李新刚吕红剑李静涛裴胜伟王敏
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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