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

Abstract

The invention discloses a flat-packed probe device for diagnosing plasma parameters in a high-speed flow field. The device includes a flat-packed probe, wherein the flat-packed probe makes the probe electrode surface flush with the surface of an insulating sleeve. This structure well solves the problem that in the high-speed flow field plasma, the traditional electrostatic probe is easily damaged in the flow field due to the exposed electrode, and the problem that the traditional electrostatic probe sticks out of the surface of the flying object affects flight safety. It can be seen that in the high-speed flow field plasma environment, the flat-pack probe can replace the electrostatic probe to better diagnose the plasma parameter information. The invention adopts the structure that the surface of the electrode is flush with the surface of the flying object, and successfully solves the difficulty that the electrode of the traditional Langmuir probe is exposed, easily insulated and damaged.

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...

AI Technical Summary

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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