An active surface potential controller for electron-emitting spacecraft without working substance
A technology of electron emission and surface potential, which is applied in the direction of space navigation aircraft, aircraft, motor vehicles, etc., can solve the problems of high mass, high power consumption, complex structure, etc., and achieve the effect of reducing satellite potential and low power consumption
Inactive Publication Date: 2018-12-21
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology
However, at present, the potential active controller products in our country all need to carry gaseous (xenon) or solid (fluoroplastic) working fluids, such as hollow cathode plasma contactors and pulsed plasma sources, which use gas and solid source materials to generate electrons respectively, resulting in other The structure is relatively complex, and its large volume, mass, and power consumption limit its application on spacecraft
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[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] Such as figure 1 Shown is a schematic structural diagram of the active controller of the surface potential of the non-propellant electron emission type spacecraft of the present invention, including a photocathode 1, a light source 2, an outer cylinder 5 and an extraction pole 6, wherein the outer cylinder 5 has openings at both ends, One end is provided with a transmissive photocathode 1, and the other end is provided with a centrally opened extraction pole 6, the photocathode 1 and the extraction pole 6 are both insulated from the outer cylinder 5; the light source 2 is arranged outside th...
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The invention provides an active surface potential controller for an electron-emitting spacecraft without working substance.. The surface potential active controller adopting the structure does not need to provide a gaseous state for emitting electrons, and the solid fuel working substance has the characteristics of simple structure, small external dimension, low power consumption and the like. Asurface potential active control for an electron-emitting spacecraft without working substance is compose of an electron-emitting part and an external electric field part, and has that advantages of light weight, miniaturization, low power consumption and long life, and is more suitable for bee used on a spacecraft as a surface potential active controller of the spacecraft.
Description
technical field [0001] The invention relates to the technical field of space environment effect protection for spacecraft, in particular to an active controller for the surface potential of an electron-emitting spacecraft without working fluid. Background technique [0002] Under the action of space plasma (energy of 0.1-100keV) and solar radiation, the surface of the satellite will produce the phenomenon of charge accumulation and discharge, which is called surface charging effect. The deposition of charge on the shadow side of the satellite will generate a negative potential relative to the space plasma, up to tens of thousands of volts. Excessive surface potential will cause electrostatic discharge, which has an important impact on the safe and stable operation of satellites in orbit. [0003] It is an effective means to control the surface potential of the spacecraft by using the potential active control technology to emit electrons into space and realize the discharge ...
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CPCB64G1/66
Inventor 蒋锴秦晓刚史亮赵呈选汤道坦柳青陈益峰杨生胜王俊
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH