Langmuir probe sensor used on sounding rocket

Abstract

The invention provides a Langmuir probe sensor used on a sounding rocket. The Langmuir probe sensor comprises an upper hemisphere (1), a lower hemisphere (2), a connecting rod (4), a telescopic rod and a signal wire, wherein the upper hemisphere (1), the lower hemisphere (2) and the connecting rod (4) are in cavity structures; the upper hemisphere (1) and the lower hemisphere (2) are connected through an insulating partition plate (3); one end of the connecting rod (4) penetrates in along a central shaft at one side of the spherical surface of the lower hemisphere (2); the connecting rod (4) and the lower hemisphere (2) are connected and fixed through an insulating pad (6) embedded in one end of the connecting rod (4), the other end of the connecting rod (4) is connected and fixed together with the telescopic rod; one end of the signal wire is connected with the upper hemisphere (1), the other end of the signal wire (1) penetrates through the insulating pad (6) and the inner cavity of the upper hemisphere (1), and is guided out from the inner cavity of the connecting rod (4); the upper hemisphere (1) is used as a collecting electrode, and the lower hemisphere (2) is used as a protective pole.

Description

technical field [0001] The invention relates to the technical field of space detection, in particular to a Langmuir probe sensor used on a sounding rocket. Background technique [0002] Langmuir probe sensor is an important instrument for in-situ measurement of space plasma electron density and electron temperature. It is widely used in ionospheric satellite and rocket detection. Before this mission, there is no successful application precedent in our country. Langmuir probe sensor technology is one of its key technologies and one of the key factors to determine the success of detection. [0003] Currently, the Langmuir probe sensor consists of three parts: collector, guard and extension rod. The collector (usually loaded with scanning voltage or fixed bias) interacts with the surrounding plasma to collect charged particles in the space to form a collection current, which is measured by the measured circuit to form a signal output; the protection electrode maintains the sam...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a Langmuir probe used for sounding rockets in order to solve the technical problem of mutual restriction between the shielding effect and the vibration level caused by the existing Langmuir probe sensor due to its own structure. Sensor; the Langmuir probe sensor can not only meet the vibration level requirements, but also ensure a good shielding effect on the extension rod and the arrow body

Images