Aerodynamic wind tunnel model test device and test method for dual wind-assisted rotors

Abstract

The invention relates to a wind tunnel model test device and a test method for aerodynamics of a dual wind-assisted rotor. The device comprises a wind tunnel rotating platform. The top surface of the wind tunnel rotating platform is provided with two parallel and spaced mobile frames. A plurality of two-component force measuring platforms are mounted on the mobile frames. A single two-component force measuring platform slides along the mobile frames. A rotor model is mounted on the top surface of the two-component force measuring platform. A fixed shaft is mounted inside the rotor model. A torque balance is mounted on the fixed shaft. A motor seat is fixed outside the torque balance. A motor is mounted on the upper end surface of the motor seat. The output shaft of the motor is connected to a transmission cylinder through a coupling. The aerodynamic test of a dual wind-assisted rotor under a large-scale model can be conveniently completed through the mutual cooperation between the wind tunnel rotating platform, the two-component force measuring platform, the rotor model, the torque balance, the motor and other components. The overall test is convenient and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of fluid mechanics testing, and in particular to a dual wind-assisted rotor aerodynamic wind tunnel model testing device and a testing method. Background Art

[0002] In recent years, as the policy of energy conservation and emission reduction for ships has been strengthened, wind-assisted propulsion rotors have been recognized by markets around the world as an energy-saving device that is simple to operate and has strong feasibility for retrofitting old ships. Its working principle is to use the Magnus effect of a rotating cylinder to obtain lift perpendicular to the direction of wind to reduce the power consumed by the ship's main propulsion system.

[0003] At present, the design technology of wind-assisted propulsion rotors mostly relies on numerical calculations, and experimental research is limited to mechanistic research on small-scale models of single rotors. A real ship is usually equipped with multiple wind-assisted propulsion rotors working simultaneously. There is no test device in the prior art that can carry out aerodynamic tests of dual wind-assisted propulsion rotors under large-scale models. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned existing production technology, the applicant provides a dual wind-assisted rotor aerodynamic wind tunnel model test device and test method, which can conveniently complete the dual wind-assisted rotor aerodynamic test work under a large-scale model, is easy to operate and has good working reliability.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A dual wind-assisted rotor aerodynamic wind tunnel model test device comprises a wind tunnel rotating platform, the top surface of the wind tunnel rotating platform is provided with two parallel and spaced mobile frames, a plurality of two-component force measuring platforms are mounted on the mobile frames, a single two-component force measuring platform slides along the mobile frames, a rotor model is mounted on the top surface of the two-component force measuring platform, a fixed shaft is mounted in the rotor model, a torque balance is mounted on the fixed shaft, a motor seat is fixed to the outside of the torque balance, a motor is mounted on the upper end surface of the motor seat, and an output shaft of the motor is connected to a transmission cylinder through a coupling;

[0007] The structure of the rotor model is as follows: it includes a base fixed to the top surface of the two-component force measuring platform, the top surface of the base is fixedly connected to the shaft flange, a fixed shaft is installed on the shaft flange through a fastener, the upper and lower ends of the outer circumferential surface of the fixed shaft are respectively installed with a first bearing group and a second bearing group, the lower end surface of the middle rotating cylinder is fixed to the outer shell of the first bearing group, and the upper end surface of the middle rotating cylinder is fixed to the outer shell of the second bearing group; the top of the middle rotating cylinder is connected to the upper rotating cylinder through a thread, the bottom of the middle rotating cylinder is connected to the lower rotating cylinder through a thread, the upper end surface of the middle rotating cylinder is connected to the transmission cylinder through a fastener, and the sealing plate is fixed to the end surface of the upper rotating cylinder with screws;

[0008] An external driving device is arranged at the bottom of the wind tunnel rotating platform, and the external driving device drives the wind tunnel rotating platform to rotate, and the angle between the wind tunnel rotating platform and the incoming flow direction is the wind direction angle θ.

[0009] As a further improvement of the above technical solution:

[0010] The structure of the mobile frame is as follows: it includes a bottom plate fixed to the wind tunnel rotating platform, a guide rail is fixedly installed on the bottom plate, a slider is installed on the guide rail, a mounting plate is fixed on the slider, a locker is installed on the guide rail, and the locker locks the mounting plate.

[0011] The mounting plate is a square thin plate structure, and a square hole is opened in the middle of the mounting plate.

[0012] The clamp is an integrated structure.

[0013] Two two-component force measuring platforms are mounted on the mobile frame, and the distance between the two two-component force measuring platforms is adjustable.

[0014] The structure of a single two-component force measuring platform is as follows: it comprises an upper plate and a lower plate which are spaced apart from each other, and a plurality of two-component sensors are installed between the upper plate and the lower plate.

[0015] There are eight two-component sensors in total, and one two-component sensor is fixed to each of the four vertices and the midpoints of the four sides of the lower plate. When fixed, one side of the two-component sensor is aligned with the reference surface on the lower plate to ensure that the measurement directions of the two-component sensors are consistent.

[0016] The torque balance is a spoke structure, including an outer ring, spokes and an inner ring, one end of the spoke is connected to the inner side of the outer ring, the other end of the spoke is connected to the outer side of the inner ring, and four spokes are evenly distributed between the outer ring and the inner ring.

[0017] The power line of the motor and the signal line of the torque balance are both passed through the central hole of the fixed shaft of the rotor model.

[0018] A test method for a dual wind-assisted rotor aerodynamic wind tunnel model test device includes the following steps:

[0019] S1: Preparation work, install the test device in place;

[0020] S2: Adjustment work, start the bottom drive device of the wind tunnel rotating platform and rotate the wind tunnel rotating platform to the specified wind direction angle;

[0021] S3: Adjustment work, adjust the distance between the two two-component force measurement platforms;

[0022] S4: Start the work, increase the wind speed to the test wind speed, record the voltage signal of the two-component sensor in the two-component force measuring platform, and obtain the rotor plane force zero point Fx0, Fy0 in the rotating coordinate system according to the calibration coefficient before the test;

[0023] S5: Recording work, starting the motor, recording the voltage signals of the two-component sensor and the torque balance in the two-component force measuring platform at different speeds of the rotor model, and obtaining the rotor plane forces Fx, Fy, and Mz in the rotating coordinate system according to the calibration coefficients before the test;

[0024] S6: Conversion work, after deducting the zero point, converting the plane force under the rotating coordinate into the fixed coordinate system force can obtain the lift, drag and torque of the rotor model under different wind directions and different rotation speeds.

[0025] The beneficial effects of the present invention are as follows:

[0026] The present invention has a compact and reasonable structure and is easy to operate. Through the cooperation between the wind tunnel rotating platform, the two-component force measuring platform, the rotor model, the torque balance, the motor and other components, the aerodynamic test of the dual wind-assisted rotor under a large-scale model can be easily completed. The overall test is convenient and easy to operate.

[0027] At the same time, the present invention also has the following advantages:

[0028] (1) The center distance of the dual-rotor model is controlled by a slider and a clamp. The center distance is continuously adjustable, and the operation is convenient and reliable.

[0029] (2) The rotating cylinder of the rotor model adopts a split structure. By replacing the base, lower rotating cylinder, upper rotating cylinder, and sealing plate, rotor models with different aspect ratios (the ratio of the rotor model height to the rotating cylinder diameter) and disk ratios (the ratio of the sealing plate diameter to the rotating cylinder diameter) can be obtained, which is beneficial to conducting multi-parameter research.

[0030] (3) The two-component force measurement platform adopts a structural form that combines eight two-component sensors with an upper plate and a lower plate. It has strong load-bearing capacity and rigidity. It can carry out research on the influence of multiple parameters on the aerodynamics of dual wind-assisted propulsion rotors under large-scale models, including dual rotor center distance, wind direction angle, rotor model aspect ratio, and disk ratio.

[0031] (4) The present invention can carry out research on the influence of multiple parameters including the dual-rotor center distance, wind direction angle, rotor model aspect ratio, and disk ratio on the aerodynamics of dual wind-assisted thruster rotors under a large-scale model. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic diagram of wind direction angle adjustment of the present invention.

[0034] Figure 3 It is a structural schematic diagram of the mobile rack of the present invention.

[0035] Figure 4 yes Figure 3 A partial enlarged view of part A in the middle.

[0036] Figure 5 It is a structural schematic diagram of the two-component force measuring platform of the present invention.

[0037] Figure 6 It is a structural schematic diagram of the rotor model of the present invention.

[0038] Figure 7 It is a structural schematic diagram of the torque balance of the present invention.

[0039] Among them: 1. Wind tunnel rotating platform; 2. Mobile frame; 3. Two-component force measurement platform; 4. Rotor model; 5. Torque balance; 6. Motor; 7. Motor seat; 8. Elastic coupling;

[0040] 201, bottom plate; 202, guide rail; 203, slider; 204, clamp; 205, mounting plate;

[0041] 301, lower plate; 302, two-component sensor; 303, upper plate;

[0042] 401, base; 402, lower rotating cylinder; 403, shaft flange; 404, first bearing group; 405, middle rotating cylinder; 406, fixed shaft; 407, second bearing group; 408, upper rotating cylinder; 409, transmission cylinder; 410, sealing plate;

[0043] 501, outer ring; 502, spokes; 503, inner ring. DETAILED DESCRIPTION

[0044] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0045] like Figure 1-Figure 7 As shown, the dual wind-assisted rotor aerodynamic wind tunnel model test device of this embodiment includes a wind tunnel rotating platform 1, the top surface of the wind tunnel rotating platform 1 is provided with two parallel and spaced mobile frames 2, a plurality of two-component force measuring platforms 3 are mounted on the mobile frames 2, a single two-component force measuring platform 3 slides along the mobile frames 2, a rotor model 4 is mounted on the top surface of the two-component force measuring platform 3, a fixed shaft 406 is supported and mounted inside the rotor model 4, a torque balance 5 is mounted on the fixed shaft 406, a motor seat 7 is fixed to the outside of the torque balance 5, a motor 6 is mounted on the upper end surface of the motor seat 7, and the output shaft of the motor 6 is connected to the transmission cylinder 409 through a coupling 8;

[0046] The structure of the rotor model 4 is as follows: it includes a base 401 fixed to the top surface of the two-component force measuring platform 3, the top surface of the base 401 is fixedly connected to the shaft flange 403, a fixed shaft 406 is installed on the shaft flange 403 by fasteners, the upper and lower ends of the outer circumferential surface of the fixed shaft 406 are respectively installed with a first bearing group 404 and a second bearing group 407, the lower end surface of the middle rotating cylinder 405 is fixed to the outer shell of the first bearing group 404, and the upper end surface of the middle rotating cylinder 405 is fixed to the outer shell of the second bearing group 407; the top of the middle rotating cylinder 405 is connected to the upper rotating cylinder 408 by threads, the bottom of the middle rotating cylinder 405 is connected to the lower rotating cylinder 402 by threads, the upper end surface of the middle rotating cylinder 405 is connected to the transmission cylinder 409 by fasteners, and the sealing plate 410 is fixed to the end surface of the upper rotating cylinder 408 by screws;

[0047] An external driving device is provided at the bottom of the wind tunnel rotating platform 1, and the external driving device drives the wind tunnel rotating platform 1 to rotate, and the angle between the wind tunnel rotating platform 1 and the incoming flow direction is the wind direction angle θ.

[0048] The structure of the mobile frame 2 is as follows: it includes a base plate 201 fixed to the wind tunnel rotating platform 1, a guide rail 202 is fixedly installed on the base plate 201, a slider 203 is installed on the guide rail 202, a mounting plate 205 is fixed on the slider 203, and a locker 204 is installed on the guide rail 202, and the locker 204 locks the mounting plate 205.

[0049] The mounting plate 205 is a square thin plate structure, and a square hole is opened in the middle of the mounting plate 205 .

[0050] The clamp 204 is an integrated structure.

[0051] Two two-component force measuring platforms 3 are mounted on the mobile frame 2 , and the distance between the two two-component force measuring platforms 3 is adjustable.

[0052] The structure of a single two-component force measuring platform 3 is as follows: it includes an upper plate 303 and a lower plate 301 which are spaced apart from each other, and a plurality of two-component sensors 302 are installed between the upper plate 303 and the lower plate 301 .

[0053] There are eight two-component sensors 302 in total, and one two-component sensor 302 is fixed to each of the four vertices and the midpoints of the four sides of the lower plate 301. When fixed, one side of the two-component sensor 302 is aligned with the reference surface on the lower plate 301 to ensure that the measurement directions of each two-component sensor 302 are consistent.

[0054] The torque balance 5 is a spoke-type structure, including an outer ring 501 , spokes 502 and an inner ring 503 , one end of the spoke 502 is connected to the inner side of the outer ring 501 , the other end of the spoke 502 is connected to the outer side of the inner ring 503 , and four spokes 502 are evenly distributed between the outer ring 501 and the inner ring 503 .

[0055] The power line of the motor 6 and the signal line of the torque balance 5 both pass through the central hole of the fixed shaft 406 of the rotor model 4 .

[0056] The test method of the dual wind-assisted rotor aerodynamic wind tunnel model test device of this embodiment includes the following steps:

[0057] S1: Preparation work, install the test device in place;

[0058] S2: Adjustment work, start the bottom driving device of the wind tunnel rotating platform 1, and rotate the wind tunnel rotating platform 1 to the specified wind direction angle;

[0059] S3: Adjustment work, adjusting the distance between the two two-component force measuring platforms 2;

[0060] S4: Start the work, increase the wind speed to the test wind speed, record the voltage signal of the two-component sensor 302 in the two-component force measuring platform 2, and obtain the rotor plane force zero point Fx0, Fy0 in the rotating coordinate system according to the calibration coefficient before the test;

[0061] S5: Recording work, starting the motor 6, recording the voltage signals of the two-component sensor 302 in the two-component force measuring platform 2 and the torque balance 5 at different speeds of the rotor model 4, and obtaining the rotor plane forces Fx, Fy, and Mz in the rotating coordinate system according to the calibration coefficients before the test;

[0062] S6: Conversion work, after deducting the zero point, the plane force under the rotating coordinate is converted into the fixed coordinate system force to obtain the lift, drag and torque of the rotor model 4 under different wind direction angles and different rotation speeds.

[0063] The specific structure and functions of the dual wind-assisted rotor aerodynamic wind tunnel test device of the present invention are as follows:

[0064] like Figure 1 As shown, it mainly includes a wind tunnel rotating platform 1, a mobile frame 2, a two-component force measuring platform 3, a rotor model 4, a torque balance 5, a motor 6, a motor seat 7, and an elastic coupling 8.

[0065] The bottom plate 201 of the mobile frame 2 is fixed to the wind tunnel rotating platform 1 .

[0066] The lower plate 301 of the two-component force measuring platform 3 is fixedly connected to the mounting plate 205 of the mobile frame 2 .

[0067] The base 401 of the rotor model 4 is fixedly connected to the upper plate 303 of the two-component force measuring platform 3 .

[0068] A rotor model 4 is mounted on each of the two upper plates 303 .

[0069] Among them, the motor 6 is fixed to the upper end surface of the motor seat 7, the bottom of the motor seat 7 is fixed to the outer ring of the torque balance 5, the inner ring of the torque balance 5 is fixed to the fixed shaft of the rotor model 4, and the transmission cylinder 409 of the rotor model 4 is connected to the rotating shaft of the motor 6 through the coupling 8. The rotating shaft of the motor 6 drives the upper rotating cylinder 408, the middle rotating cylinder 405, and the lower rotating cylinder 402 of the rotor model 4 to rotate through the coupling 8, and the power line of the motor 6 and the signal line of the torque balance 5 pass through the center hole of the fixed shaft 406 of the rotor model 4.

[0070] like Figure 2 As shown, the wind tunnel rotating platform 1 is driven by an external device, which can drive the entire device to rotate so as to change the wind direction angle θ between the center line of the double rotors and the incoming flow.

[0071] like Figure 3 and Figure 4 As shown, the mobile frame 2 mainly includes a base plate 201 , a guide rail 202 , a slider 203 , a clamp 204 , and a mounting plate 205 .

[0072] The guide rail 202 is fixed on the bottom plate 201 .

[0073] Among them, three sliders 203 are symmetrically installed on the bottom surface of each mounting plate 205, and the sliders 203 are installed on the guide rails 202. Clamps 204 are installed on the outer sides of the sliders on both sides of the bottom of the mounting plate 205. When the clamps 204 are not working, the mounting plate 205 can slide freely along the guide rails. When the center distance between the two mounting plates 205 is adjusted to the required position, the clamps 204 can be locked and fixed on the guide rails 202. At this time, the mounting plate 205 cannot be moved.

[0074] like Figure 5 As shown, the two-component force measuring platform 3 mainly includes a lower plate 301 , eight two-component sensors 302 and an upper plate 303 .

[0075] A two-component sensor 302 is fixed to each of the four vertices and the midpoints of the four sides of the lower plate 301. When fixed, one side of the two-component sensor 302 is aligned with the upper reference surface of the lower plate 301 to ensure that the measurement directions of each two-component sensor 302 are consistent and reduce calibration errors. The upper plate 303 is fixed to eight two-component sensors 302. This structural form can effectively reduce the influence of the bending moment of a single two-component sensor 302 caused by the height of the rotor model 4, and at the same time increase the stiffness of the two-component force measurement platform 3.

[0076] like Figure 6 As shown, the rotor model 4 mainly includes a base 401, a lower rotating cylinder 402, a shaft flange 403, a first bearing group 404, a middle rotating cylinder 405, a fixed shaft 406, a second bearing group 407, an upper rotating cylinder 408, a transmission cylinder 409 and a sealing plate 410.

[0077] Among them, the lower end face of the stationary shaft 406 is fixedly connected to the shaft flange 403, the shaft flange 403 is fixedly connected to the base 401, the lower end face of the middle rotating cylinder 405 is fixed to the outer shell of the first bearing group 404, and the upper end face is fixed to the outer shell of the second bearing group 407. The middle rotating cylinder 405 is supported on the stationary shaft 406 by the first bearing group 404 and the second bearing group 407, the transmission cylinder 405 is fixed to the upper end face of the middle rotating cylinder 405 with screws, the lower rotating cylinder 402 is fixed to the bottom of the middle rotating cylinder 405 with threads, the upper rotating cylinder 408 is fixed to the top of the middle rotating cylinder 405 with threads, and the sealing plate 410 is fixed to the end face of the upper rotating cylinder 408 with screws. By replacing the base 401, the lower rotating cylinder 402, and the upper rotating cylinder 408, rotor models with different aspect ratios can be obtained, and by replacing the sealing plate 410, rotor models with different disk diameter ratios can be obtained.

[0078] like Figure 7 As shown, the torque balance 5 is a spoke-type structure, mainly including an outer ring 501 , spokes 502 and an inner ring 503 .

[0079] One end of the spoke 502 is connected to the inner side of the outer ring 501, and the other end is connected to the outer side of the inner ring 503. The four spokes 502 are evenly distributed between the outer ring 501 and the inner ring 503.

[0080] The actual work process is completed through the following steps:

[0081] The first step is to start the wind tunnel rotating platform 1 to the specified wind direction angle θ.

[0082] The second step is to release the clamp 204 , move the two-component force measuring platform 3 to a specified position according to the spacing requirement of the rotor model 4 , and fix the clamp 204 .

[0083] The third step is to increase the wind speed to the test wind speed, record the voltage signal of the two-component sensor 302, and obtain the rotor plane force zero point Fx0, Fy0 in the rotating coordinate system according to the calibration coefficient before the test.

[0084] The fourth step is to start the motor 6 and record the voltage signals of the two-component sensor 302 and the torque balance 5 at different speeds of the rotor model 4. The rotor plane forces Fx, Fy, and Mz in the rotating coordinate system can be obtained according to the calibration coefficients before the test.

[0085] In the fifth step, after deducting the zero point, the plane force under the rotating coordinate is converted into the fixed coordinate system force to obtain the lift, drag and torque of the rotor model 4 under different wind direction angles and different rotation speeds.

[0086] That is, the aerodynamic wind tunnel test process of the dual wind-assisted rotor can be easily completed by the above method, which is easy to operate and has good working reliability.

[0087] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A dual wind-assisted rotor aerodynamic wind tunnel model test device, characterized in that: The invention comprises a wind tunnel rotating platform (1), wherein the top surface of the wind tunnel rotating platform (1) is provided with two parallel and spaced movable frames (2), a plurality of two-component force measuring platforms (3) are mounted on the movable frames (2), a single two-component force measuring platform (3) slides along the movable frames (2), a rotor model (4) is mounted on the top surface of the two-component force measuring platform (3), a fixed shaft (406) is mounted on the inner support of the rotor model (4), a torque balance (5) is mounted on the fixed shaft (406), a motor seat (7) is fixed to the outside of the torque balance (5), a motor (6) is mounted on the upper end surface of the motor seat (7), and an output shaft of the motor (6) is connected to a transmission cylinder (409) via a coupling (8); The structure of the rotor model (4) is as follows: it comprises a base (401) fixed to the top surface of the two-component force measuring platform (3); the top surface of the base (401) is fixedly connected to the shaft flange (403); a fixed shaft (406) is installed on the shaft flange (403) via a fastener; the upper and lower ends of the outer circumferential surface of the fixed shaft (406) are respectively installed with a first bearing group (404) and a second bearing group (407); the lower end surface of the middle rotating cylinder (405) is connected to the first bearing group The outer shell of the middle rotating cylinder (404) is fixed, and the upper end surface of the middle rotating cylinder (405) is fixed to the outer shell of the second bearing group (407); the top of the middle rotating cylinder (405) is connected to the upper rotating cylinder (408) by threading, and the bottom of the middle rotating cylinder (405) is connected to the lower rotating cylinder (402) by threading, and the upper end surface of the middle rotating cylinder (405) is connected to the transmission cylinder (409) by fasteners, and the sealing plate (410) is fixed to the end surface of the upper rotating cylinder (408) by screws. An external driving device is arranged at the bottom of the wind tunnel rotating platform (1), and the external driving device drives the wind tunnel rotating platform (1) to rotate, so that the angle between the wind tunnel rotating platform (1) and the incoming flow direction is a wind direction angle θ.

2. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 1, characterized in that: The structure of the mobile frame (2) is as follows: it comprises a base plate (201) fixed to the wind tunnel rotating platform (1); a guide rail (202) is fixedly mounted on the base plate (201); a slider (203) is mounted on the guide rail (202); a mounting plate (205) is fixed on the slider (203); a locker (204) is mounted on the guide rail (202); and the locker (204) locks the mounting plate (205).

3. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 2, characterized in that: The mounting plate (205) is a square thin plate structure, and a square hole is opened in the middle of the mounting plate (205).

4. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 2, characterized in that: The locker (204) is an integrated structure.

5. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 1, characterized in that: Two two-component force measuring platforms (3) are mounted on the mobile frame (2), and the distance between the two two-component force measuring platforms (3) is adjustable.

6. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 1, characterized in that: The structure of a single two-component force measuring platform (3) is as follows: it comprises an upper plate (303) and a lower plate (301) which are spaced apart from each other, and a plurality of two-component sensors (302) are installed between the upper plate (303) and the lower plate (301).

7. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 6, characterized in that: There are eight two-component sensors (302) in total, and one two-component sensor (302) is fixed to each of the four vertices and the midpoints of the four sides of the lower plate (301). When fixed, one side surface of the two-component sensor (302) is aligned with the reference surface on the lower plate (301), ensuring that the measurement directions of the two-component sensors (302) are consistent.

8. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 1, characterized in that: The torque balance (5) is a spoke-type structure, comprising an outer ring (501), spokes (502) and an inner ring (503), one end of the spoke (502) is connected to the inner side of the outer ring (501), the other end of the spoke (502) is connected to the outer side of the inner ring (503), and four spokes (502) are evenly distributed between the outer ring (501) and the inner ring (503).

9. The dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 1, characterized in that: The power line of the motor (6) and the signal line of the torque balance (5) are both passed through the central hole of the fixed shaft (406) of the rotor model (4).

10. A test method using the dual wind-assisted rotor aerodynamic wind tunnel model test device according to claim 1, characterized in that: The steps are as follows: S1: Preparation work, install the test device in place; S2: Adjustment work, starting the bottom driving device of the wind tunnel rotating platform (1) to rotate the wind tunnel rotating platform (1) to a specified wind direction angle; S3: Adjustment work, adjusting the distance between the two two-component force measurement platforms (2); S4: Start the work, increase the wind speed to the test wind speed, record the voltage signal of the two-component sensor (302) in the two-component force measuring platform (2), and obtain the rotor plane force zero point Fx0, Fy0 in the rotating coordinate system according to the calibration coefficient before the test; S5: recording work, starting the motor (6), recording the voltage signals of the two-component sensor (302) and the torque balance (5) in the two-component force measuring platform (2) at different speeds of the rotor model (4), and obtaining the rotor plane forces Fx, Fy, Mz in the rotating coordinate system according to the calibration coefficients before the test; S6: Conversion work, after deducting the zero point, the plane force under the rotating coordinate is converted into the fixed coordinate system force to obtain the lift, drag and torque of the rotor model (4) under different wind direction angles and different rotation speeds.

Images