Schlieren instrument support system for wind tunnel test

Abstract

The invention discloses a schlieren instrument support system for a wind tunnel test, and the system comprises: a support frame I which is disposed at the outer side of a right observation port of a wind tunnel test section, wherein a turnover device is rotatably arranged at the upper end of the support frame I, and a collimation system of the schlieren instrument is arranged at the upper end of the turnover device in a sliding manner; and a support frame II which is arranged on the outer side of the left observation opening of the wind tunnel test section, wherein a viewing system of the schlieren instrument is arranged at the upper end of the support frame II in a sliding manner. The system is novel in structure, stable in operation and simple in operation, and the assembling and debugging efficiency of the schlieren instrument in a wind tunnel test can be remarkably improved through the overturning mechanism and the translation structure; the position detection system ensures the stability of displacement motion operation of each part of the device; the mobile device enables the device to have certain mobility; the control driving system enables the device to have good controllability; and the whole device is high in automation degree, and the labor intensity of operators is reduced while the working efficiency of the wind tunnel test is improved.

Description

technical field [0001] The invention relates to the technical field of devices related to wind tunnel tests, in particular to a schlieren support system for wind tunnel tests. Background technique [0002] The wind tunnel is a ground pipe-like device that simulates the flight environment of the aircraft. The flight model is installed statically in the wind tunnel test section, and the wind tunnel test section will generate a certain amount of airflow, and then the airflow will blow to the flight model head-on. The relative motion of the model is used to simulate the state of the aircraft flying in the air, so as to detect and research various data. Then, during the test, in order to display the density gradient change characteristics of the flow field in the test area of ​​the wind tunnel, we need to use a device called a schlieren instrument. The schlieren instrument is generally divided into two parts: a collimation system and a viewing system. Parts will be installed on ...

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Problems solved by technology

[0003] At present, there is a serious problem in the wind tunnel test. Before the test, we need to import the flight model from the observation port to the inside of the wind tunnel test section from the guide rail preset on the side of the wind tunnel test section, but the guide rail and the installation port The position conflicts with the working position of the collimation system of the schlieren instrument, resulting in mutual occupation. If we want to carry out the test, we must first remove the collimation system from the support frame. After the flight model is successfully imported, then Move the collimation system back again, and then manually calibrate and align the collimation system and viewing system again to meet the job requirements. Because the collimation system is heavy, it is very cumbersome and laborious to move. Or when taking out the flight model, it is necessary to remove the collimation system again. The whole process is very time-consuming and labor-intensive, which seriously reduces the working efficiency and increases the labor intensity of the operators. Therefore, we need to design a kind of Schlieren instrument support system with high degree of automation and automatic orientation and positioning

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