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A device for accurately measuring the deflection angle of the local airflow in the transonic test section of the wind tunnel

A technology of precise measurement and test section, applied in the direction of measuring device, aerodynamic test, machine/structural component test, etc., can solve the problems of large installation error and the influence of accuracy of measurement results, etc., and achieve accurate measurement of airflow deflection angle , Simple structure, strong practical effect

Inactive Publication Date: 2018-08-07
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the previous airflow deflection angle measurement device, the probe assembly was connected to the wind tunnel support through a strut and a joint, and the attitude of the probe was controlled by an angle of attack mechanism. There was a large installation error, which greatly affected the accuracy of the measurement results. big impact

Method used

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  • A device for accurately measuring the deflection angle of the local airflow in the transonic test section of the wind tunnel
  • A device for accurately measuring the deflection angle of the local airflow in the transonic test section of the wind tunnel
  • A device for accurately measuring the deflection angle of the local airflow in the transonic test section of the wind tunnel

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Embodiment Construction

[0018] Such as figure 1 (1), (2) and figure 2 As shown, the present invention provides a device for accurately measuring the deflection angle of the local airflow in the transonic test section of a wind tunnel, including a probe assembly 1, a pin shaft 2, an adapter shaft 3, a fine-tuning bolt 4, an auxiliary mounting block 5, a middle section 6. Tail cone 7, vertical plate 8, base plate 9, positioning plate 10.

[0019] The probe assembly 1 is composed of a probe 1-1 and an adapter platform 1-2, both of which are column-fitted, fixed as a whole with jacking screws and glued, and will not be disassembled. The probe assembly 1 is connected with the adapter shaft 3 through the pin shaft 2 , and its pitch angle is adjusted through the fine adjustment bolt 4 and the auxiliary mounting block 5 . After the probe 1-1, the transfer platform 1-2, the transfer shaft 3, the fine-tuning bolt 4, and the auxiliary installation block 5 are assembled into one body, they are connected with ...

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Abstract

The invention discloses a device for accurately measuring the deflection angle of the local airflow in a transonic test section of a wind tunnel, which includes a probe assembly, a pin shaft, an adapter shaft, a fine-tuning mechanism and a base, and the probe assembly passes through the pin shaft It is connected with the adapter shaft, the adapter shaft is fixed on the base, and fixed on the adapter shaft by the fine-tuning mechanism, so as to adjust the pitch of the probe assembly. The device achieves the purpose of accurately measuring the airflow deflection angle by improving the installation accuracy of the probe, has low cost, good economy, simple structure, convenient installation and adjustment, and is a highly practical airflow deflection angle measuring device.

Description

technical field [0001] The invention relates to a flow field calibrating device in a wind tunnel test, which is used for calibrating and measuring the local flow direction of the flow field in the transonic test section of the wind tunnel, specifically by precisely controlling the attitude of the measuring probe in the wind tunnel, and using it to accurately measure The local airflow deflection angle Δα in the vertical plane of the central axis of the transonic test section and the local airflow deflection angle Δβ in the horizontal plane. Background technique [0002] The purpose of the flow field calibration is to check the performance of the wind tunnel and test equipment, to know whether the quality of the flow field meets the specified requirements, so as to ensure the quality of the wind tunnel test data. The airflow deflection angle is an important indicator of the quality of the wind tunnel flow field. It refers to the angle between the gas streamline and the wind tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06G01B21/22
Inventor 李伟佳杨辉袁雄
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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