Wind tunnel test piece attack angle adjusting device and detection method

Abstract

The invention provides a wind tunnel test piece attack angle adjusting device and a detection method, and the device is characterized in that a test section hole body is provided with a fixed rotation angle mechanism, the rotation angle mechanism installed on the test section hole body drives a test piece and an angle measuring instrument to rotate, and the rotation of the rotation angle mechanism is controlled through a console; the transition clamp is tightly matched with the corner mechanism through the positioning pin; the method comprises the following steps: feeding back an attack angle of a test piece through an angle measuring instrument, and assisting a corner mechanism to adjust the attack angle; the device is reasonable in configuration, the detection method is easy and convenient to operate, the angle of the test piece can be displayed and fed back in a transition mode, the angle of attack of the wind tunnel test piece can be effectively adjusted and detected by combining the angle rotating mechanism, and the result is effective and reliable.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft onboard equipment testing, and specifically relates to an angle of attack adjustment device and a detection method for a wind tunnel test piece. Background Art

[0002] Wind tunnel is an important test and verification platform for aircraft and airborne equipment. Wind tunnel testing of aircraft or airborne equipment is to simulate the flying environment of the aircraft and its airborne equipment through the wind tunnel to verify its performance and characteristics in different simulated flight environments. Summary of the invention

[0003] Purpose of the invention: In the process of wind tunnel test verification, it is generally necessary to adjust the angle of attack of the test piece. In order to accurately adjust and detect the angle of attack of the test piece, a device for adjusting the angle of attack of a wind tunnel test piece and a method for detecting the angle of attack of the wind tunnel test piece are required.

[0004] In a first aspect, the present application provides a device for adjusting the angle of attack of a wind tunnel test piece, the device comprising a wind tunnel test section, a turning mechanism, a test section mounting flange, a transition fixture, a calibration angle measuring instrument mounting table, a calibration angle measuring instrument, a test piece, a positioning pin, a control console, a control cable, a measurement angle measuring instrument mounting table, and a measurement angle measuring instrument;

[0005] Among them, the control console drives the angle mechanism to rotate so that the calibration angle measuring instrument reaches 0°; the measuring angle measuring instrument is also adjusted to reach 0° by adjusting the installation table of the measuring angle measuring instrument, and the installation table of the measuring angle measuring instrument is locked; the installation table of the calibration angle measuring instrument and the calibration angle measuring instrument are disassembled, and the test piece is fixed on the transition fixture; the control console rotates the angle mechanism and reads the angle displayed by the measuring angle measuring instrument, which is the installation attack angle of the test piece.

[0006] Preferably, the test section mounting flange is fixed to the side wall of the wind tunnel test section through a turning mechanism; the test section mounting flange is provided with two positioning pins;

[0007] The transition fixture is installed on the test section mounting flange and is tightly matched with the mounting flange through positioning pins.

[0008] Preferably, the calibration angle measuring instrument mounting table is mounted on the test section mounting flange through a transition fixture;

[0009] The calibration angle measuring instrument is fixed on a calibration angle measuring instrument mounting table.

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

[0011] The test piece is mounted on the test section mounting flange through a transition fixture;

[0012] The angle measuring instrument installation table is fixed on the angle turning mechanism, and the angle measuring instrument installation table is configured with an adjustable installation surface;

[0013] The angle measuring instrument is installed on the angle measuring instrument installation table.

[0014] In a second aspect, the present application also provides a method for detecting the angle of attack of a wind tunnel test piece, the method comprising:

[0015] Drive the angle mechanism to rotate through the console to make the calibration angle measuring instrument reach 0°;

[0016] By adjusting the installation table of the angle measuring instrument, the angle measuring instrument also reaches 0°, and the installation table of the angle measuring instrument is locked;

[0017] Disassemble the calibration angle measuring instrument mounting table and the calibration angle measuring instrument, and install and fix the test piece on the transition fixture;

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

[0019] Preferably, the test section mounting flange is fixed to the side wall of the wind tunnel test section through a turning mechanism; the test section mounting flange is provided with two positioning pins;

[0020] The transition fixture is installed on the test section mounting flange and is tightly matched with the mounting flange through positioning pins.

[0021] Preferably, the calibration angle measuring instrument mounting table is mounted on the test section mounting flange through a transition fixture;

[0022] The calibration angle measuring instrument is fixed on a calibration angle measuring instrument mounting table.

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

[0024] The test piece is mounted on the test section mounting flange through a transition fixture;

[0025] The angle measuring instrument installation table is fixed on the angle turning mechanism, and the angle measuring instrument installation table is configured with an adjustable installation surface;

[0026] The angle measuring instrument is installed on the angle measuring instrument installation table.

[0027] This application has the following technical effects:

[0028] The device has reasonable configuration and is easy to operate. It can display and feedback the angle of the test piece through a transitional manner. Combined with the angle rotation mechanism, it effectively realizes the adjustment and detection of the angle of attack of the wind tunnel test piece, and the results are effective and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a device for adjusting the angle of attack of a wind tunnel test piece provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of a wind tunnel test piece during attack angle detection provided by an embodiment of the present application;

[0031] In the figure, 1- wind tunnel test section, 2- corner mechanism, 3- test section mounting flange, 4- transition fixture, 5- calibration angle measuring instrument mounting table, 6- calibration angle measuring instrument, 7- test piece, 8- positioning pin, 9- control console, 10- control cable, 11- measurement angle measuring instrument mounting table, 12- measurement angle measuring instrument. DETAILED DESCRIPTION

[0032] A certain angle of attack sensor is tested in a wind tunnel, and the performance parameters of the sensor under different angles of attack need to be tested. Figure 1 and Figure 2 As shown, the test device needs to be configured as follows:

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

[0034] Adjust the scales of the angle measuring instrument 6 and the angle measuring instrument 12 to 0 degrees, and then operate the angle mechanism through the console operation to make the bubble of the angle measuring instrument 6 in the middle position. Adjust the angle measuring instrument mounting table 11 to make the bubble of the angle measuring instrument 12 in the middle position. Tighten the mounting screws of the angle measuring instrument 12 to fix the angle measuring instrument 12 on the angle measuring instrument mounting table 11. Disassemble the angle measuring instrument mounting table 5 and the angle measuring instrument 6, and replace the transition fixture 4 to install the test piece 7.

[0035] Start the wind tunnel wind speed and conduct a wind test at a wind speed of 45m / s. The performance parameter output result of the test piece is 12mV.

[0036] Adjust the scale of the angle measuring instrument 12 to +15 degrees, operate the angle mechanism through the console operation, and make the bubble of the angle measuring instrument 12 in the middle position. Start the wind tunnel wind speed, and carry out the blowing test under the condition of 45m / s wind speed. The performance parameter output result of the test piece is 348mV.

[0037] Adjust the scale of the angle measuring instrument 12 to +30 degrees, operate the angle mechanism through the console operation, and make the bubble of the angle measuring instrument 12 in the middle position. Start the wind tunnel wind speed, and carry out the blowing test under the wind speed of 45m / s. The performance parameter output result of the test piece is 806mV.

[0038] Adjust the scale of the angle measuring instrument 12 to -15 degrees, operate the angle mechanism through the console operation, and make the bubble of the angle measuring instrument 12 in the middle position. Start the wind tunnel wind speed, and carry out the blowing test under the condition of 45m / s wind speed. The performance parameter output result of the test piece is 359mV.

[0039] Adjust the scale of the angle measuring instrument 12 to -30 degrees, operate the angle mechanism through the console operation, and make the bubble of the angle measuring instrument 12 in the middle position. Start the wind tunnel wind speed, and carry out the blowing test under the condition of 45m / s wind speed. The performance parameter output result of the test piece is 795mV.

[0040] In other embodiments of the present application, a device for adjusting and detecting the angle of attack of a wind tunnel test piece is provided, wherein the test device comprises a wind tunnel test section 1, a turning mechanism 2, a test section mounting flange 3, a transition fixture 4, a calibration angle measuring instrument mounting table 5, a calibration angle measuring instrument 6, a test piece 7, and a positioning pin 8; a control console 9, a control cable 10, a measuring angle measuring instrument mounting table 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 through the corner mechanism 2;

[0042] The test section mounting flange 3 is provided with two positioning pins 8;

[0043] The transition fixture 4 is installed on the test section mounting flange 3 and is tightly matched with the mounting flange 3 through the positioning pin 8;

[0044] The calibration angle measuring instrument mounting table 5 is mounted on the test section mounting flange 3 through the transition fixture 4;

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

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

[0047] The test piece 7 is mounted on the test section mounting flange 3 through the transition fixture 4.

[0048] The angle measuring instrument installation table 11 is fixed on the corner mechanism 2, and the angle measuring instrument installation table 11 is configured with an adjustable installation surface;

[0049] The measuring angle measuring instrument 12 is installed on the measuring angle measuring instrument installation table 11;

[0050] The present invention belongs to the technical field of aircraft deicing test, and relates to a wind tunnel test piece attack angle adjustment device and a detection method. The device installs a fixed angle mechanism through a test section hole body, drives the test piece and an angle measuring instrument to rotate through the angle mechanism installed on the test section hole body, and controls the rotation of the angle mechanism through a control console. The positioning pin is used to ensure that the transition fixture is tightly matched with the angle mechanism.

[0051] This method uses an angle measuring instrument to feedback the angle of attack of the test piece, and assists the angle-rotating mechanism to adjust the angle of attack. The device is reasonably configured, the detection method is easy to operate, and the angle display of the test piece can be fed back through a transition mode. Combined with the angle-rotating mechanism, the angle of attack of the wind tunnel test piece can be effectively adjusted and detected, and the results are effective and reliable.

Claims

1. A device for adjusting the angle of attack of a wind tunnel test piece, characterized in that: The device comprises a wind tunnel test section, a turning mechanism, a test section mounting flange, a transition fixture, a calibration angle measuring instrument mounting table, a calibration angle measuring instrument, a test piece, a positioning pin, a control console, a control cable, a measurement angle measuring instrument mounting table, and a measurement angle measuring instrument; Among them, the control console drives the angle mechanism to rotate so that the calibration angle measuring instrument reaches 0°; the measuring angle measuring instrument is also adjusted to reach 0° by adjusting the installation table of the measuring angle measuring instrument, and the installation table of the measuring angle measuring instrument is locked; the installation table of the calibration angle measuring instrument and the calibration angle measuring instrument are disassembled, and the test piece is fixed on the transition fixture; the control console rotates the angle mechanism and reads the angle displayed by the measuring angle measuring instrument, which is the installation attack angle of the test piece.

2. The device according to claim 1, characterized in that The test section mounting flange is fixed to the side wall of the wind tunnel test section through a rotation mechanism; the test section mounting flange is equipped with 2 positioning pins; The transition fixture is installed on the test section mounting flange and is tightly matched with the mounting flange through positioning pins.

3. The device according to claim 2, characterized in that The calibration angle measuring instrument mounting table is mounted on the test section mounting flange through a transition fixture; The calibration angle measuring instrument is fixed on a calibration angle measuring instrument mounting table.

4. The device according to claim 3, characterized in that The control console is connected to the corner mechanism via a control cable; The test piece is mounted on the test section mounting flange through a transition fixture; The angle measuring instrument installation table is fixed on the angle turning mechanism, and the angle measuring instrument installation table is configured with an adjustable installation surface; The angle measuring instrument is installed on the angle measuring instrument installation table.

5. A method for detecting the angle of attack of a wind tunnel test piece, characterized in that: The method comprises: Drive the angle mechanism to rotate through the console to make the calibration angle measuring instrument reach 0°; Adjust the installation table of the angle measuring instrument so that the angle measuring instrument also reaches 0°, and lock the installation table of the angle measuring instrument; Disassemble the calibration angle measuring instrument mounting table and the calibration angle measuring instrument, and install and fix the test piece on the transition fixture; Rotate the angle mechanism through the console and read the angle displayed by the angle measuring instrument, which is the installation attack angle of the test piece.

6. The method according to claim 5, characterized in that The test section mounting flange is fixed to the side wall of the wind tunnel test section through a rotation mechanism; the test section mounting flange is equipped with 2 positioning pins; The transition fixture is installed on the test section mounting flange and is tightly matched with the mounting flange through positioning pins.

7. The method according to claim 6, characterized in that The calibration angle measuring instrument mounting table is mounted on the test section mounting flange through a transition fixture; The calibration angle measuring instrument is fixed on a calibration angle measuring instrument mounting table.

8. The method according to claim 7, characterized in that The console is connected to the corner mechanism via a control cable; The test piece is mounted on the test section mounting flange through a transition fixture; The angle measuring instrument installation table is fixed on the angle turning mechanism, and the angle measuring instrument installation table is configured with an adjustable installation surface; The angle measuring instrument is installed on the angle measuring instrument installation table.

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