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Verification method for spacecraft suspension potential test

A technology of suspension potential and experimental verification, which is applied in space navigation equipment, simulation devices of space navigation conditions, transportation and packaging, etc., to achieve the effect of accurate and quick judgment

Active Publication Date: 2018-12-18
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology

[0014] However, how to carry out the verification of the floating potential of the spacecraft on the ground to ensure the safety of electrification in the space environment has not been well resolved

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  • Verification method for spacecraft suspension potential test
  • Verification method for spacecraft suspension potential test
  • Verification method for spacecraft suspension potential test

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings, but this is only exemplary and not intended to limit the protection scope of the present invention.

[0028] See attached figure 2 , figure 2 It shows the connection schematic diagram of each measuring component in the ground spacecraft suspension potential test verification method of the present invention. Among them, the vacuum tank provides a vacuum test environment or a simulated environment of the space environment, including the degree of vacuum (the degree of vacuum is not greater than 10 -3 Pa), plasma distribution, etc., the plasma generator is arranged on the insulating pad, and the plasma generator includes a discharge chamber, a magnetic coil, a glass discharge tube, a radio frequency power supply and a casing;

[0029] 2) Connect the casing of the plasma generator to the first contact of the three-state switch through the lead wire through the ...

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Abstract

The invention discloses a Verification method for a spacecraft suspension potential test including steps of setting up a space suspension potential measurement simulation test platform for the spacecraft, connecting the plasma generator housing on the test platform to the first contact of the three-state switch, adopting The second contact and the third contact of the three-state switch to form the charge loop and the discharge loop respectively. The plasma density and the capacitance voltage in the vacuum chamber are measured by the oscilloscope and the Langmuir probe electrically connectedwith the plasma generator housing to verify the change of the spacecraft floating potential in the space environment. The method of the invention can accurately and quickly judge the change of the floating potential of the spacecraft through a plurality of tests and actual measurements, and the test data obtained by using the measuring means of the oscilloscope and the Langmuir probe are true andaccurate.

Description

technical field [0001] The invention belongs to the technical field of spacecraft suspension potential control, and in particular relates to a test method for verifying spacecraft suspension potential through capacitance simulation on the ground. Background technique [0002] The typical LEO orbit environment is at an altitude of 350-400km. The plasma temperature Te is about 0.2eV, and the plasma density Ne is about 10 10 —10 12 m -3 . The electrification level of the spacecraft mainly depends on the electron temperature of the ambient plasma, therefore, the LEO plasma environment itself will not cause the cargo spacecraft to be seriously electrified. However, since the spacecraft uses a high-voltage solar array, the electrification situation is different. Taking the international cargo spacecraft as an example, the high-voltage battery array used is 160V, and the spacecraft structure is connected to the negative terminal of the battery array. Assume that the middle po...

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Application Information

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IPC IPC(8): B64G7/00
CPCB64G7/00
Inventor 刘庆海赵华任琼英刘业楠唐振宇王俊峰葛丽丽李昊
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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