Flat-loaded probe device for high-speed flow field plasma parameter diagnosis

Abstract

The invention discloses a flat-loaded probe device for high-speed flow field plasma parameter diagnosis. The device comprises a flat-loaded probe. The flat-loaded probe aligns the surface of the probeelectrode with the surface of an insulating sleeve. The structure well solves the problems that in a high-speed flow field plasma, a traditional electrostatic probe is easily damaged in the flow field due to the exposed electrode, and the traditional electrostatic probe protrudes from the surface of a flying object and affects flight safety. In the high-speed flow field plasma environment, the flat-loaded probe can replace the electrostatic probe to better diagnose the parameter information of the plasma. According to the invention, the structure that the surface of the electrode is flush with the surface of the flying object is adopted; and the problem that the exposed electrode of a traditional Langmuir probe is easily insulated and damaged is successfully solved.

Description

technical field [0001] The invention belongs to the technical field of aerodynamic flow field diagnosis, and in particular relates to a flat-pack probe device used for diagnosis of plasma parameters in a high-speed flow field. Background technique [0002] The electrostatic probe was invented by Langmuir et al. in 1923. Due to its simple manufacture and high spatial resolution, it can accurately obtain the local plasma parameter information at the position of the probe, so it is widely used by researchers to diagnose plasma density. Information such as electron temperature and space potential. However, traditional electrostatic probes are not suitable for plasma information diagnosis in the environment of high-speed flow field. The plasma sheath is a typical high-speed flow field plasma; it is a high-density plasma thin layer formed on the surface of the flying object due to shock wave heating and protective material ablation after the high-speed re-entry flying object ente...

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Problems solved by technology

[0003] Aiming at the problem that the electrical probe cannot protrude from the surface of the flying object to detect plasma-related information, the present invention invents a flat-pack probe combined with the shape and structure of the flying object, including the size of the flat-pack probe, the insulating layer, and the linking method of the shape of the flying object

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