A multi-optical path optical measurement compression sheet for laminated arc heaters

Abstract

The invention provides a multi-light-path optical measuring compressing sheet for a laminated electro-arc heater, and relates to the field of multi-light-path optical measuring. The multi-light-path optical measuring compressing sheet for the laminated electro-arc heater comprises a disc shaped optical measuring compressing sheet body and a laser collimating mechanism, wherein a water inlet and a water outlet are arranged in the radial direction of the optical measuring compressing sheet body; two air pipelines are arranged in the radial direction of the optical measuring compressing sheet body; six optical measuring channels are uniformly arranged in the circumference direction of the optical measuring compressing sheet body; a plurality of positioning mounting holes are uniformly formed in the circumference direction of an axis of the optical measuring compressing sheet body; the optical measuring compressing sheet body is connected with an external laminated electro-arc heater through the positioning mounting holes; one end of the laser collimating mechanism extends into the corresponding optical measuring channel, and the other end of the laser collimating mechanism is connected with an external optical element. With the adoption of the multi-light-path optical measuring compressing sheet for the laminated electro-arc heater, the problem of the wall-surface high-heat-load cooling and mutual interference between the multi-light-path optical measuring channel and a cooling water channel can be solved; the demand of multi-light-path construction of laser absorbing type spectrum diagnosis of the laminated electro-arc heater can be met.

Description

technical field [0001] The invention relates to the field of multi-light-path optical measurement, in particular to a multi-light-path optical measurement compression sheet for laminated arc heaters. Background technique [0002] The laminated arc heater, also known as the compressed arc arc heater, has the advantages of high enthalpy and stable operation, and is the main test equipment for studying the aerodynamic thermal problems of hypersonic and long-endurance aircraft. Due to the limitations of the ground test, such as the limitation of heater power and nozzle size, it is impossible to achieve full-scale and full-orbit simulation, etc. There are certain differences between the simulated environment provided by the arc heater and the real flight environment of the aircraft. The lack of how to evaluate this difference has led to a large margin in the current aircraft heat protection design, and an overly conservative aircraft thermal protection system not only increases t...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, provide a multi-optical path optical measurement compression sheet for a laminated arc heater, and solve the problems of high thermal load cooling on the wall and mutual interference between the multi-optical optical measurement channel and the cooling water channel To meet the needs of multi-optical path construction for laser absorption spectrum diagnosis of laminated arc heaters

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