Wind tunnel test piece attack angle adjustment device and detection method

Abstract

This application provides a wind tunnel test specimen angle of attack adjustment device and testing method. The device uses a fixed angle mechanism installed in the test section tunnel body to rotate the test specimen and angle measuring instrument. The rotation of the angle mechanism is controlled by a control console. A positioning pin ensures a tight fit between the transition clamp and the angle mechanism. The method uses the angle measuring instrument to provide feedback on the angle of attack of the test specimen, assisting the angle mechanism in adjusting the angle of attack. This device has a reasonable configuration, and the testing method is easy to operate. It can display and feedback the angle of the test specimen through a transition method. Combined with the angle mechanism, it can effectively realize the adjustment and testing of the angle of attack of wind tunnel test specimens, and the results are valid and reliable.

Description

Technical Field

[0001] This application belongs to the field of aircraft airborne equipment testing technology, specifically relating to a wind tunnel test component angle of attack adjustment device and testing method. Background Technology

[0002] Wind tunnels are an important testing and verification platform for aircraft avionics. Wind tunnel testing of aircraft or avionics equipment simulates the flight environment of aircraft and their avionics in the air, verifying their performance and characteristics under different simulated flight environments. Summary of the Invention

[0003] Purpose of the invention: In wind tunnel testing, it is generally necessary to adjust the angle of attack of the test specimen. Therefore, a wind tunnel test specimen angle of attack adjustment device and detection method are needed to accurately adjust and detect the angle of attack.

[0004] In a first aspect, this application provides a wind tunnel test specimen angle of attack adjustment device, the device comprising a wind tunnel test section, a turning mechanism, a test section mounting flange, a transition clamp, a calibration angle measuring instrument mounting platform, a calibration angle measuring instrument, a test specimen, a positioning pin, a control console, a control cable, a measuring angle measuring instrument mounting platform, and a measuring angle measuring instrument.

[0005] The process involves: driving the angle mechanism to rotate via the control console to bring the calibration angle measuring instrument to 0°; adjusting the mounting platform of the angle measuring instrument to bring it to 0° as well, and locking the mounting platform; disassembling the mounting platform and the calibration angle measuring instrument, and fixing the test piece onto the transition fixture; and rotating the angle mechanism via the control console to read the angle displayed by the angle measuring instrument, which is the installation angle of attack of the test piece.

[0006] Preferably, the test section mounting flange is fixed to the side wall of the wind tunnel test section by a corner mechanism; the test section mounting flange is equipped with two locating pins;

[0007] The transition clamp is installed on the mounting flange of the test section and is tightly fitted to the mounting flange by a locating pin.

[0008] Preferably, the mounting platform of the calibration angle measuring instrument is mounted on the mounting flange of the test section via a transition clamp;

[0009] The calibration angle measuring instrument is fixed on the calibration angle measuring instrument mounting platform.

[0010] Preferably, the control console is connected to the corner mechanism via a control cable;

[0011] The test specimen is mounted on the test section mounting flange using a transition clamp;

[0012] The mounting platform of the angle measuring instrument is fixed on the corner mechanism, and the mounting platform of the angle measuring instrument is equipped with an adjustable mounting surface.

[0013] The angle measuring instrument is installed on the angle measuring instrument mounting platform.

[0014] Secondly, this application also provides a method for detecting the angle of attack of a wind tunnel test specimen, the method comprising:

[0015] The angle measuring instrument is calibrated to 0° by driving the angle mechanism to rotate via the control console.

[0016] Adjust the mounting platform of the angle measuring instrument to bring the angle measuring instrument to 0° and lock the mounting platform of the angle measuring instrument.

[0017] Disassemble the mounting platform and calibration angle measuring instrument, and fix the test piece on the transition fixture.

[0018] Rotate the angle mechanism through the control panel and read the angle displayed by the measuring angle instrument, which is the installation angle of the test piece.

[0019] Preferably, the test section mounting flange is fixed to the side wall of the wind tunnel test section by a corner mechanism; the test section mounting flange is equipped with two locating pins;

[0020] The transition clamp is installed on the mounting flange of the test section and is tightly fitted to the mounting flange by a locating pin.

[0021] Preferably, the mounting platform of the calibration angle measuring instrument is mounted on the mounting flange of the test section via a transition clamp;

[0022] The calibration angle measuring instrument is fixed on the calibration angle measuring instrument mounting platform.

[0023] Preferably, the control console is connected to the corner mechanism via a control cable;

[0024] The test specimen is mounted on the test section mounting flange using a transition clamp;

[0025] The mounting platform of the angle measuring instrument is fixed on the corner mechanism, and the mounting platform of the angle measuring instrument is equipped with an adjustable mounting surface.

[0026] The angle measuring instrument is installed on the angle measuring instrument mounting platform.

[0027] This application has the following technical effects:

[0028] This device is reasonably configured and easy to operate. It can display and feedback the angle of the test piece through a transition method. Combined with the cornering mechanism, it effectively realizes the adjustment and detection of the angle of attack of the wind tunnel test piece, and the results are valid and reliable. Attached Figure Description

[0029] Figure 1 A schematic diagram of a wind tunnel test specimen angle-of-attack adjustment device provided in this application embodiment;

[0030] Figure 2 This application provides a schematic diagram of the structure for wind tunnel test specimen angle-of-attack testing in an embodiment of the present application.

[0031] In the figure, 1-wind tunnel test section, 2-angle mechanism, 3-test section mounting flange, 4-transition clamp, 5-calibration angle measuring instrument mounting platform, 6-calibration angle measuring instrument, 7-test piece, 8-positioning pin, 9-control console, 10-control cable, 11-angle measuring instrument mounting platform, 12-angle measuring instrument. Detailed Implementation

[0032] A certain angle-of-attack sensor is undergoing wind tunnel testing, requiring the measurement of its performance parameters under different angles of attack. (Combined with...) Figure 1 and Figure 2 As shown, the test apparatus should be configured as follows:

[0033] The test section mounting flange 3 is fixed to the side wall of the wind tunnel test section 1 via the corner mechanism 2; the test section mounting flange 3 is equipped with two locating pins 8; the transition clamp 4 is installed on the test section mounting flange 3 and is tightly fitted to the mounting flange 3 via the locating pins 8; the angle measuring instrument mounting platform 5 is installed on the test section mounting flange 3 via the transition clamp 4; the angle measuring instrument is fixed on the angle measuring instrument mounting platform 5; the control console 9 is connected to the corner mechanism 2 via the control cable 10. The angle measuring instrument mounting platform 11 is fixed on the corner mechanism 2, and the angle measuring instrument mounting platform 11 is equipped with an adjustable mounting surface; the angle measuring instrument 12 is installed on the angle measuring instrument mounting platform 11.

[0034] Adjust the scales of angle measuring instruments 6 and 12 to 0 degrees. Then, operate the control panel to run the angle-turning mechanism until the bubble of angle measuring instrument 6 is in the center position. Adjust the mounting platform 11 of the angle measuring instrument so that the bubble of angle measuring instrument 12 is in the center position. Tighten the mounting screws of angle measuring instrument 12 to fix angle measuring instrument 12 to the mounting platform 11. Remove the mounting platform 5 and angle measuring instrument 6, and replace the transition clamp 4 to install the test piece 7.

[0035] The wind tunnel was started, and a wind test was conducted at a wind speed of 45 m / s. The performance parameter output of the test piece was 12 mV.

[0036] Adjust the 12-scale of the angle measuring instrument to +15 degrees. Operate the rotating mechanism via the control console to center the bubble in the 12-scale of the angle measuring instrument. Start the wind tunnel and conduct a wind test at a wind speed of 45 m / s. The performance parameter output of the test piece is 348 mV.

[0037] Adjust the angle measuring instrument's scale 12 to +30 degrees. Operate the control panel to run the angle rotating mechanism until the bubble in the angle measuring instrument's scale 12 is in the middle position. Start the wind tunnel and conduct a wind test at a wind speed of 45 m / s. The performance parameter output of the test piece is 806 mV.

[0038] Adjust the 12-degree scale of the angle measuring instrument to -15 degrees. Operate the rotating mechanism via the control console to center the bubble in the 12-degree angle measuring instrument. Start the wind tunnel and conduct a wind test at a wind speed of 45 m / s. The performance parameter output of the test piece is 359 mV.

[0039] Adjust the scale of the angle measuring instrument 12 to -30 degrees. Operate the control panel to run the angle rotating mechanism until the bubble of the angle measuring instrument 12 is in the middle position. Start the wind tunnel and conduct a wind test at a wind speed of 45 m / s. The performance parameter output of the test piece is 795 mV.

[0040] In other embodiments of this application, a wind tunnel test specimen angle of attack adjustment and testing device is provided. The test device includes a wind tunnel test section 1, a turning mechanism 2, a test section mounting flange 3, a transition clamp 4, a calibration angle measuring instrument mounting platform 5, a calibration angle measuring instrument 6, a test specimen 7, a positioning pin 8; a control console 9, a control cable 10, a measuring angle measuring instrument mounting platform 11, and a measuring angle measuring instrument 12.

[0041] The test section mounting flange 3 is fixed to the side wall of the wind tunnel test section 1 via the corner mechanism 2;

[0042] The test section mounting flange 3 is equipped with 2 locating pins 8;

[0043] The transition clamp 4 is installed on the test section mounting flange 3 and is tightly fitted to the mounting flange 3 by the locating pin 8;

[0044] The calibration angle measuring instrument mounting platform 5 is mounted on the test section mounting flange 3 via the transition clamp 4;

[0045] The calibration angle measuring instrument 6 is fixed on the calibration angle measuring instrument mounting platform 5;

[0046] The control console 9 is connected to the corner mechanism 2 via control cable 10.

[0047] Test piece 7 is mounted on test section mounting flange 3 via transition clamp 4.

[0048] An angle measuring instrument mounting platform 11 is fixed on the corner mechanism 2, and the angle measuring instrument mounting platform 11 is equipped with an adjustable mounting surface;

[0049] Angle measuring instrument 12 is installed on the angle measuring instrument mounting platform 11;

[0050] This invention belongs to the field of aircraft anti-icing and de-icing testing technology, and relates to a wind tunnel test specimen angle-of-attack adjustment device and testing method. The device uses a fixed angle mechanism installed in the test tunnel section. This angle mechanism drives the test specimen and angle measuring instrument to rotate, and the rotation is controlled by a control console. A locating pin ensures a tight fit between the transition clamp and the angle mechanism.

[0051] This method uses an angle measuring instrument to provide feedback on the angle of attack of the test specimen, assisting the cornering mechanism in adjusting the angle of attack. The device is rationally configured, the detection method is simple to operate, and it can display and feedback the angle of attack of the test specimen through a transition mechanism. Combined with the cornering mechanism, it can effectively achieve the adjustment and detection of the angle of attack of wind tunnel test specimens, and the results are valid and reliable.

Claims

1. A wind tunnel test specimen angle-of-attack adjustment device, characterized in that, The device includes a wind tunnel test section, a cornering mechanism, a test section mounting flange, a transition clamp, a calibration angle measuring instrument mounting platform, a calibration angle measuring instrument, a test piece, a positioning pin, a control console, control cables, a measuring angle measuring instrument mounting platform, and a measuring angle measuring instrument. The process involves: driving the angle mechanism to rotate via the control console to bring the calibration angle measuring instrument to 0°; adjusting the mounting platform of the angle measuring instrument to bring it to 0° as well, and locking the mounting platform; disassembling the mounting platform and the calibration angle measuring instrument, and fixing the test piece onto the transition fixture; rotating the angle mechanism via the control console to read the angle displayed by the angle measuring instrument, which is the installation angle of attack of the test piece. The test section mounting flange is fixed to the side wall of the wind tunnel test section via a corner mechanism; the transition clamp is installed on the test section mounting flange; the calibration angle measuring instrument mounting platform is installed on the test section mounting flange via the transition clamp; The calibration angle measuring instrument is fixed on the calibration angle measuring instrument mounting platform; The test specimen is mounted on the test section mounting flange using a transition clamp; The mounting platform of the angle measuring instrument is fixed on the corner mechanism, and the mounting platform of the angle measuring instrument is equipped with an adjustable mounting surface. The angle measuring instrument is installed on the angle measuring instrument mounting platform.

2. The apparatus according to claim 1, characterized in that, The test section mounting flange is equipped with two locating pins; the transition clamp is tightly fitted to the mounting flange via the locating pins.

3. The apparatus according to claim 2, characterized in that, The control console is connected to the corner mechanism via a control cable.

4. A method for detecting the angle of attack of a wind tunnel test specimen, characterized in that, The method is applied to the wind tunnel test specimen angle-of-attack adjustment device as described in claim 1, and the method includes: The angle measuring instrument is calibrated to 0° by driving the angle mechanism to rotate via the control console. Adjust the mounting platform of the angle measuring instrument to bring the angle measuring instrument to 0° and lock the mounting platform of the angle measuring instrument. Disassemble the mounting platform and calibration angle measuring instrument, and fix the test piece on the transition fixture. Rotate the angle mechanism through the control panel and read the angle displayed by the measuring angle instrument, which is the installation angle of the test piece.

5. The method according to claim 4, characterized in that, The test section mounting flange is fixed to the side wall of the wind tunnel test section by a corner mechanism; the test section mounting flange is equipped with two locating pins; The transition clamp is installed on the mounting flange of the test section and is tightly fitted to the mounting flange by a locating pin.

6. The method according to claim 5, characterized in that, The control console is connected to the corner mechanism via a control cable; The test specimen is mounted on the test section mounting flange using a transition clamp; The mounting platform of the angle measuring instrument is fixed on the corner mechanism, and the mounting platform of the angle measuring instrument is equipped with an adjustable mounting surface. The angle measuring instrument is installed on the angle measuring instrument mounting platform.

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