Vertical flow bidirectional adjustable gust generation system

Abstract

The invention provides a vertical flow bidirectional adjustable gust generation system, and relates to the technical field of low-speed wind tunnel test, the vertical flow bidirectional adjustable gust generation system comprises a support device located outside a wind tunnel, the support device and the wind tunnel are arranged independently, and a first gap is arranged between the support device and the wind tunnel; the blade is located in the air channel and comprises a body and a rotating rod, and the rotating rod penetrates through the side wall of the air channel and is rotationally connected with the supporting device; the motor is arranged on the supporting device and used for driving the blades to rotate. Compared with the prior art, the gust generator has the advantages that the swing amplitude, frequency and phase of the blades can be flexibly controlled, multiple types of gust can be generated, and more complex and diversified experiment requirements can be met.

Description

Technical Field

[0001] The invention relates to the technical field of low-speed wind tunnel testing, and in particular to a vertical flow bidirectionally adjustable gust generating system. Background Art

[0002] During the flight of an aircraft, the presence of gusts is a key influencing factor. Gusts refer to the rapid change of wind speed in a certain direction. The transient loads generated by them will affect the motion state of the aircraft, and thus have a significant impact on the flight quality and flight safety. Therefore, studying and reproducing the gust effect is crucial for aircraft design and flight safety testing.

[0003] Existing wind tunnel gust generating devices usually use swinging blades to simulate gusts. This type of device drives multiple blades to swing synchronously through a mechanical transmission device to adjust the uniform airflow in the wind tunnel to the set gust. However, the traditional mechanical transmission method relies on transmission structures such as connecting rods, which limits the swing amplitude, frequency and phase of the blades. This limitation means that traditional gust generating devices can only generate a limited number of gusts, making it difficult to meet more complex and diverse experimental needs. Summary of the invention

[0004] In order to solve the above problems, the present application provides a vertical flow bidirectional adjustable gust generating system.

[0005] The present application provides a vertical flow bidirectional adjustable gust generating system, which adopts the following technical solution: A vertical flow bidirectional adjustable gust generating system is applied to a wind tunnel, wherein the wind tunnel has an air duct, and includes: A supporting device is located outside the wind tunnel, the supporting device and the wind tunnel are independently arranged, and a first gap is arranged between the supporting device and the wind tunnel; A blade is located in the wind tunnel, the blade comprises a body and a rotating rod, the rotating rod penetrates the side wall of the wind tunnel and is rotatably connected to the supporting device; The motor is arranged on the supporting device and is used for driving the blades to rotate.

[0006] Preferably, the output shaft of the motor is coaxially connected to the rotating rod; And / or, the motor is one of a servo motor and a stepper motor.

[0007] Preferably, the side wall of the wind tunnel is provided with a connecting hole, and the rotating rod passes through the connecting hole to be rotatably connected with the supporting device, wherein: A second gap is provided between the rotating rod and the connecting hole; And / or, in the axial direction of the rotating rod, a third gap is provided between the two ends of the body and the side wall of the wind tunnel.

[0008] Preferably, the connecting hole is located within the projection area of ​​the blade along the axial direction of the rotating rod.

[0009] Preferably, the body is detachably connected to the rotating rod, and the rotating rod comprises a first end and a second end.

[0010] Preferably, the supporting device includes a main body and a first supporting portion and a second supporting portion arranged relatively to the main body, the first supporting portion is located on one side of the wind tunnel, the second supporting portion is located on the other side of the wind tunnel, the first end is rotatably connected to the first supporting portion, the second end is rotatably connected to the second supporting portion, the first supporting portion is detachably connected to the main body, and the first supporting portion is detachably connected to the rotating rod.

[0011] Preferably, the side wall of the wind tunnel comprises a first cover plate, the first cover plate is detachably mounted on the wind tunnel, the first cover plate is provided with the connecting hole, and the first cover plate is located close to the first end side.

[0012] Preferably, the main body is provided with a through hole, the rotating rod is slidably inserted into the through hole, the first end can be inserted from one end of the through hole to the other end, and the rotating rod is provided with a stopper, which cooperates with the main body to limit the rotation in the circumferential direction of the rotating rod.

[0013] Preferably, the gust generating system comprises a first state and a second state; When the gust generating system is in the first state, the number of the blades is two; When the gust generating system is in the second state, the number of the blade is one; The number of the motors is arranged in one-to-one correspondence with the number of the blades.

[0014] Preferably, the supporting device comprises a first fixing position, a second fixing position and a third fixing position for fixing the motor, the second fixing position is located between the first fixing position and the third fixing position, the first fixing position is provided with a first bolt, and the third fixing position is provided with a second bolt; When the gust generating system is in the first state, the number of the motors is two, one of the motors is fixed to the first fixing position by a first bolt, and the other of the motors is fixed to the third fixing position by a second bolt; When the gust generating system is in the second state, the motor is fixed in the second fixing position, and at least part of the first bolts and at least part of the second bolts fix the motor in the second fixing position.

[0015] The present invention has the following advantages and beneficial effects: The present invention directly drives the blades through the motor, and can flexibly control the swing amplitude, frequency and phase of the blades, and is not subject to any restrictions during the control process, so as to realize arbitrary setting of these parameters. This innovation effectively overcomes the defect of limited control in the prior art, and enables the generation of various types of gusts to meet more complex and diverse experimental needs.

[0016] In addition, the support device and the wind tunnel are independently set up, and a first gap is left between the two to avoid mutual influence. The motor is installed on the support device, allowing its vibration to be transmitted to the support device, thereby reducing the vibration generated when the motor directly drives the blades to affect the blades and the wind tunnel, ensuring the accuracy of the test data. The support device is directly fixed to the ground, effectively buffering the vibration generated by the motor, further reducing interference with the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a first structural diagram of an embodiment of the present application.

[0019] Figure 2 It is a second structural diagram of an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the structure when the first supporting part is hidden.

[0021] Figure 4 It is a schematic diagram of the structure when the first cover is hidden.

[0022] Figure 5 It is a structural schematic diagram of the gust generating system when it is in the first state.

[0023] Figure 6 It is a structural schematic diagram of the gust generating system when it is in the second state.

[0024] Figure 7 It is a schematic diagram of the distribution structure of the first, second and third fixed positions.

[0025] The markings in the figure are: 10. Wind tunnel; 11. Connecting hole; 12. First cover plate; 13. Air duct; 100. Support device; 110. First gap; 120. First support part; 130. Second support part; 140. First fixing position; 150. Second fixing position; 160. Third fixing position; 170. First bolt; 180. Second bolt; 190. Main body; 200. Blade; 210. Rotating rod; 211. Second gap; 212. First end; 213. Second end; 214. Stop member; 214a. Protrusion; 220. Main body; 221. Through hole; 222. Third gap; 223. Groove; 300. Motor. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0027] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0028] During the flight of an aircraft, mitigation control is an important part of ensuring safety and stability. Especially when the aircraft is flying at high speed, the impact of gusts on aircraft performance cannot be ignored. Therefore, it is crucial to conduct in-depth research on the behavior and response of aircraft encountering gusts during high-speed flight. In order to accurately simulate such flight conditions, high-speed wind tunnels are usually required for experiments, and the wind speed is generally above Mach 0.4.

[0029] In related technologies, in order to study the impact of gusts on aircraft flight, blades for generating gusts are installed in high-speed wind tunnels to simulate gusts through experiments. However, due to the high wind speed in high-speed wind tunnels, the existing technology usually drives the blades through a mechanical transmission system. This design can not only reduce the direct impact of the power device on the movement of the blades, but also effectively avoid the reverse push of the high-speed airflow on the blades, thereby preventing the power system from being damaged due to overload.

[0030] The core design of the transmission system is to achieve one-way transmission, ensuring that the power is only used to drive the blades to control the amplitude, frequency and phase of their swing. When the blades are affected by high-speed airflow, the transmission system can prevent the reaction force from being transmitted to the power system, thereby ensuring the stability and safety of the power system. Therefore, a mechanical transmission device must be used between the blades and the power system to ensure the precise control of the blades and the safe operation of the power system. This structural design not only enhances the safety of the experiment, but also provides an effective experimental platform for studying the impact of gusts on aircraft.

[0031] However, the inventors found that in low-speed wind tunnels (wind tunnels with wind speeds less than 0.3 Mach), when simulating the impact of gusts on the aircraft during takeoff, a mechanical transmission device is still used to drive the blades. This traditional design becomes inflexible and inaccurate under low-speed conditions. Since the impact of gusts on aircraft is more significant at low speeds, experiments often need to simulate more complex gust patterns. However, existing mechanical transmission devices have limitations in controlling the swing amplitude, frequency, and phase of the blades, making it difficult to meet more complex and diverse experimental needs. This means that in low-speed wind tunnels, existing control methods can no longer fully simulate the actual response of aircraft under complex meteorological conditions, limiting the effectiveness of the experiment and the reliability of the results.

[0032] In order to solve the above problems, the present application provides a vertical flow bidirectional adjustable gust generation system, which directly drives the blades through the motor, can flexibly control the swing amplitude, frequency and phase of the blades, and is not subject to any restrictions during the control process, so as to achieve arbitrary setting of these parameters. This innovative design effectively overcomes the defect of inflexible control in low-speed wind tunnels in the prior art, making it possible to generate various types of gusts to meet more complex and diverse experimental needs.

[0033] In addition, since the wind tunnel involved in this application is a low-speed wind tunnel, the blades are subject to a small force in the wind tunnel, and the motor will not lose control due to the excessive wind speed causing the blades to be pushed in the opposite direction by the airflow. This design avoids the phenomenon that the blades are pushed in the opposite direction by the wind and the motor rotates accordingly, thereby ensuring the normal operation of the motor and the accuracy of blade control. This design ensures the stability and reliability of the control system during the experiment, and helps to more accurately simulate and study the impact of gusts on aircraft, especially the response under complex meteorological conditions when the aircraft takes off or flies at low speed.

[0034] Combine the following Figures 1 to 7 A vertical flow bidirectional adjustable gust generating system provided in an embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0035] The embodiment of the present application provides a vertical flow bidirectional adjustable gust generating system, which is applied to a wind tunnel 10, especially a low-speed wind tunnel 10, that is, a wind tunnel 10 with a wind speed less than 0.3 Mach. In some embodiments, the wind tunnel 10 has an air duct 13 and a side wall. It can be understood that the air duct 13 is surrounded by the side wall. Specifically, the side wall can be understood as the boundary portion of the air duct 13. Exemplarily, the wind tunnel 10 in the present application can be a reflow wind tunnel 10. This design not only makes the airflow evenly distributed in the air duct 13, but also effectively controls the wind speed and airflow direction, providing a more stable aerodynamic environment for the experiment. The design of the reflow wind tunnel 10 allows the airflow to circulate again after passing through the blades 200, which helps to improve the generation and control of gusts.

[0036] Reference Figure 1 , Figure 2 The system includes a support device 100, a blade 200 and a motor 300, wherein the motor 300 and the blade 200 are both mounted on the support device 100, that is, the support device 100 provides a mounting base for the blade 200 and the motor 300. The support device 100 is disposed outside the wind tunnel 10, and the support device 100 and the wind tunnel 10 are independently disposed from each other, and a first gap 110 is disposed between the support device 100 and the wind tunnel 10. In other words, there is no direct contact between the support device 100 and the wind tunnel 10, and when the support device 100 vibrates or shakes, the support device 100 will not directly drive the wind tunnel 10 to shake. This isolation effect avoids the shaking of the wind tunnel 10 to a certain extent, thereby maintaining the stability of the wind tunnel 10.

[0037] The independent setting of the support device 100 enables the airflow in the wind tunnel 10 to remain more stable, preventing external vibrations from affecting the experimental conditions. This stability is crucial for conducting aerodynamic experiments, because any slight disturbance may lead to inaccurate experimental data. Therefore, the design of the support device 100 not only improves the overall reliability of the system, but also provides a more ideal environment for simulating the impact of gusts on aircraft.

[0038] In some embodiments, reference Figure 1 , Figure 2 The blade 200 is located in the wind tunnel 13, and the blade 200 includes a body 220 and a rotating rod 210, and the rotating rod 210 penetrates the side wall of the wind tunnel 10 and is rotatably connected to the supporting device 100. This design not only optimizes the installation method of the blade 200 in the wind tunnel 13, but also ensures its effective movement under the action of wind flow.

[0039] Specifically, the blade 200 actively swings in the wind duct 13, thereby affecting the airflow in the wind duct 13, and its swinging can effectively simulate the characteristics of gusts. The through-design of the rotating rod 210 allows the blade 200 to rotate freely without being affected by the internal structure of the wind tunnel 10. This structure effectively improves the response speed and flexibility of the blade 200. By connecting the rotating rod 210 to the support device 100, the movement of the blade 200 can be precisely controlled.

[0040] In some embodiments, reference Figure 1 , Figure 2 , the motor 300 is arranged on the supporting device 100, and is used to drive the blades 200 to rotate. This design makes the connection between the motor 300 and the blades 200 tighter, ensuring the high efficiency and stability of power transmission. Specifically, the motor 300 is connected to the blades 200 through the rotating rod 210, so that the power of the motor 300 can directly act on the blades 200. This structure allows the blades 200 to actively rotate in the air duct 13, thereby effectively changing the airflow in the air duct 13 and simulating the characteristics of gusts. Since the position of the motor 300 is close to the blades 200, the power loss can be reduced and the response speed of the system is improved.

[0041] This design not only enables the blade 200 to flexibly adjust its swing amplitude, frequency and phase according to experimental requirements, but also facilitates the generation of diverse gusts. The adjustable capability of the motor 300 allows experimenters to quickly adapt to different experimental conditions and simulate gusts of various intensities and patterns in order to conduct more complex aerodynamic research.

[0042] For example, the motor 300 may be a motor capable of controlling the rotation angle and the rotation speed. This design enables the experimenter to accurately adjust the rotation swing amplitude, frequency and phase of the blade 200 to meet different experimental requirements.

[0043] Specifically, the motor 300 with adjustable rotation angle and speed can flexibly control the movement of the blade 200 in the air duct 13. This control capability not only helps to achieve fine adjustment of the swing of the blade 200, but also generates various types of gusts to simulate the flight state of the aircraft under different meteorological conditions. By adjusting the parameters of the motor 300 in real time, the experimenter can quickly respond to different experimental scenarios and aerodynamic conditions, thereby obtaining more accurate and reliable experimental data.

[0044] According to an alternative embodiment, referring to Figure 1 , Figure 2 , the output shaft of the motor 300 is coaxially connected to the rotating rod 210. This design enables the motor 300 to directly drive the rotating rod 210, thereby effectively controlling the movement of the blade 200.

[0045] Specifically, the motor 300 directly transmits power to the rotating rod 210 through the rotation of the output shaft, so that it rotates synchronously. This coaxial connection method reduces the power loss in the transmission process to a certain extent, ensuring the efficient transmission of energy. At the same time, this design also improves the response speed of the system, allowing the blade 200 to quickly adapt to airflow changes and flexibly simulate various gust conditions.

[0046] Through the coaxial connection, the motor 300 can accurately adjust the angle and speed of the rotating rod 210, thereby achieving detailed control of the swing amplitude, frequency and phase of the blade 200. This design is conducive to the experimenter to quickly adjust the parameters in different experimental scenarios to meet the diverse needs of aerodynamic research.

[0047] According to an optional embodiment, the motor 300 is one of a servo motor and a stepper motor. The servo motor is known for its high precision and high response speed, and is suitable for applications that require precise control of the rotation angle and speed. By using the servo motor, the swing amplitude, frequency and phase of the blade 200 can be adjusted more finely, which is suitable for the experimental requirements of complex gust simulation.

[0048] On the other hand, the stepper motor has good positioning accuracy and large output torque, and is suitable for situations where step-by-step control is required. In some specific experiments, the stepper motor can accurately adjust the position of the blade 200 in a discrete step manner to meet specific experimental parameter requirements.

[0049] According to an alternative embodiment, referring to Figure 3 , Figure 4 The side wall of the wind tunnel 10 is provided with a connection hole 11, and the rotating rod 210 passes through the connection hole 11 to be rotatably connected to the supporting device 100, and a second gap 211 is provided between the rotating rod 210 and the connection hole 11. This design prevents the rotating rod 210 from directly contacting the side wall of the wind tunnel 10 during the rotation process, thereby effectively preventing the vibration of the motor 300 from affecting the wind tunnel 10, and ensuring that the vibration of the blade 200 during the rotation is not transmitted to the wind tunnel 10. This isolation helps to maintain the stability of the airflow in the wind tunnel 10 and improve the reliability of the experimental results.

[0050] According to an alternative embodiment, referring to Figure 3 , Figure 4 In the axial direction of the rotating rod 210, a third gap 222 is provided between the two ends of the body 220 and the side wall of the wind tunnel 10. This design ensures that when the blade 200 rotates, the two ends of the rotating rod 210 will not come into contact with the side wall, thereby avoiding additional noise and vibration caused by the friction between the rotating rod 210 and the side wall of the wind tunnel 10. This design not only improves the durability of the system, but also helps to reduce interference with experimental data and ensure the accuracy of the aerodynamic experiment.

[0051] By setting the second gap 211 and the third gap 222, this embodiment effectively optimizes the freedom of movement of the rotating rod 210 and enhances the stability and reliability of the system. This structural design provides a more ideal experimental environment for gust simulation in the low-speed wind tunnel 10, which is helpful for in-depth research on the performance of aircraft under complex meteorological conditions.

[0052] According to an optional embodiment, the connection hole 11 is located within the projection area of ​​the blade 200 along the axial direction of the rotating rod 210. This design ensures that the end surface of the blade 200 can effectively block the connection hole 11, thereby reducing the amount of airflow overflowing to the outside through the connection hole 11. This structural design is of great significance for improving the stability of the airflow in the air duct 13.

[0053] Specifically, during the rotation of the blade 200, due to the shielding effect of its end face on the connection hole 11, a part of the airflow can be effectively prevented from leaking out of the connection hole 11, ensuring that the airflow in the air duct 13 is more concentrated and stable. Such airflow stability is crucial for gust simulation experiments, because it can reduce the interference caused by airflow fluctuations, thereby improving the accuracy and reliability of experimental data.

[0054] By optimizing the position of the connection hole 11, this embodiment achieves better airflow management and enhances the aerodynamic characteristics of the wind tunnel 10. The shielding effect of the blades 200 on the connection hole 11 not only improves the overall performance of the air duct 13, but also provides more ideal experimental conditions for aerodynamic experiments in the low-speed wind tunnel 10, which is helpful for in-depth analysis of the flight performance of the aircraft under complex meteorological conditions.

[0055] According to an alternative embodiment, referring to Figure 4 , Figure 6 The body 220 is detachably connected to the rotating rod 210, and the rotating rod 210 includes a first end 212 and a second end 213. This design allows different bodies 220 to be easily replaced under different test requirements to generate different gust conditions required.

[0056] Specifically, since different experiments may need to simulate gusts of different strengths and characteristics, the shape and size of the body 220 may also vary. Through the detachable connection, the experimenter can quickly replace the body 220 to ensure the flexibility and adaptability of the experiment. This design greatly simplifies the replacement process of the body 220, reduces the experimental preparation time, and thus improves the experimental efficiency.

[0057] The detachable connection structure not only enhances the flexibility of the system, but also provides more possibilities for aerodynamic experiments, allowing experimenters to adjust it to specific research needs. This flexibility is of great significance for in-depth research on the performance of aircraft under complex meteorological conditions, and helps to obtain more reliable and diverse experimental data.

[0058] According to an alternative embodiment, referring to Figure 3 , Figure 4 The supporting device 100 includes a main body 190 and a first supporting portion 120 and a second supporting portion 130 arranged relatively to the main body 190, the first supporting portion 120 is located on one side of the wind tunnel 10, and the second supporting portion 130 is located on the other side of the wind tunnel 10, the first end 212 is rotatably connected to the first supporting portion 120, the second end 213 is rotatably connected to the second supporting portion 130, the first supporting portion 120 is detachably connected to the main body 190, and the first supporting portion 120 is detachably connected to the rotating rod 210.

[0059] This design provides a stable support structure while ensuring the flexibility and adjustability of the rotating rod 210. Since the first support portion 120 and the main body 190 are detachably connected, the experimenter can easily maintain and adjust the support device 100. At the same time, the detachable connection between the first support portion 120 and the rotating rod 210 makes it easier to replace the main body 220, further improving the adaptability and flexibility of the system.

[0060] Through the design of the supporting device 100, effective support of the main body 220 can be achieved in different experiments, and the main body 220 can be ensured to maintain good stability during the rotation process. This structure not only enhances the overall reliability of the system, but also provides more ideal experimental conditions for gust simulation in the low-speed wind tunnel 10, which is helpful for in-depth research on the flight performance of the aircraft under complex meteorological conditions.

[0061] Specifically, a bearing is provided at the connection between the first end 212 and the first support portion 120, for example, a ball bearing can be used. The inner ring of the bearing is fixed on the first end 212 of the rotating rod 210, and the outer ring is connected to the first support portion 120 in an interference fit manner. When the first support portion 120 needs to be separated from the rotating rod 210, it is only necessary to remove the first support portion 120 from the main body 190. During the process, the first end 212 of the rotating rod 210 will be detached from the inner ring of the bearing, which means that the bearing will still remain on the first support portion 120. When reinstalling, it is only necessary to align the first end 212 of the rotating rod 210 with the inner ring of the bearing, and install the first support portion 120 back to the main body 190, so that the rotating connection between the rotating rod 210 and the first support portion 120 can be completed.

[0062] It is understandable that a similar bearing may also be provided at the rotation connection between the second end 213 and the second support portion 130 to achieve a corresponding rotation function.

[0063] According to an alternative embodiment, referring to Figure 3 , Figure 4The side wall of the wind tunnel 10 includes a first cover plate 12, which is detachably mounted on the wind tunnel 10, and is provided with a connecting hole 11. The first cover plate 12 is located near the first end 212. This design significantly improves the convenience of replacing the body 220.

[0064] When replacing the body 220, the experimenter only needs to open the first support portion 120 first, and then remove the first cover plate 12, so as to easily access the body 220 in the air duct 13. This structural design not only reduces the cumbersome steps in the replacement process, but also greatly shortens the experimental preparation time and improves the experimental efficiency.

[0065] Through the detachable first cover plate 12, the experimenter can quickly replace different bodies 220 to meet different experimental requirements. This flexibility helps to conduct effective aerodynamic experiments under different gust conditions and provides reliable technical support for in-depth research on the performance of aircraft under complex meteorological conditions.

[0066] According to an alternative embodiment, referring to Figure 4 , Figure 6 The body 220 is provided with a through hole 221, the rotating rod 210 is slidably inserted into the through hole 221, the first end 212 can be inserted from one end of the through hole 221 to the other end, and the rotating rod 210 is provided with a stopper 214, and the stopper 214 and the body 220 are rotated and limited in the circumferential direction of the rotating rod 210. Through the design of the through hole 221, the experimenter can easily remove the body 220 from the rotating rod 210, thereby simplifying the maintenance and replacement process. This structure provides support for the flexibility of the experiment, so that the system configuration can be quickly adjusted under different experimental conditions.

[0067] The setting of the rotation stopper 214 ensures that the body 220 can rotate synchronously with the rotating rod 210, avoiding the situation where the body 220 and the rotating rod 210 cannot move in coordination when the rotating rod 210 rotates. This synchronous rotation design helps to improve the accuracy and reliability of the experiment, making the airflow simulation more accurate.

[0068] For example, refer to Figure 6, the stopper 214 can be a protrusion 214a provided on one of the rotating rod 210 or the body 220, and the other is provided with a groove 223 that cooperates with the protrusion 214a. The protrusion 214a can be inserted into the groove 223 along the axial direction of the rotating rod 210, thereby achieving stable rotation restriction. This design not only enhances the overall stability of the system, but also provides more ideal experimental conditions for gust simulation in the low-speed wind tunnel 10, and helps to conduct in-depth research on the performance of aircraft under complex meteorological conditions. Moreover, through the cooperation of the protrusion 214a and the groove 223, the position of the body 220 and the rotating rod 210 in the axial direction of the rotating rod 210 can be effectively limited. This design ensures that the body 220 always remains in a predetermined position during the rotation process, thereby improving the stability of the system and the accuracy of operation.

[0069] According to an alternative embodiment, referring to Figure 3 , Figure 5 The gust generating system includes a first state and a second state. When the gust generating system is in the first state, the number of blades 200 is two; when the gust generating system is in the second state, the number of blades 200 is one; the number of motors 300 is set in one-to-one correspondence with the number of blades 200.

[0070] This design makes the gust generation system flexible, and the number of blades 200 can be quickly switched according to experimental requirements to generate gusts of different strengths and characteristics. In the first state, two blades 200 can work together to simulate more complex airflow patterns; in the second state, a single blade 200 can be used for simpler gust simulations.

[0071] Through this state switching mechanism, experimenters can effectively adjust to specific test requirements, improving the adaptability and diversity of the experiment. This structural design provides more abundant simulation conditions for aerodynamic experiments in the low-speed wind tunnel 10, which helps to deeply analyze the flight performance of the aircraft under various meteorological conditions.

[0072] According to an alternative embodiment, referring to Figure 5 , Figure 7 The supporting device 100 includes a first fixing position 140, a second fixing position 150 and a third fixing position 160 for fixing the motor 300. The second fixing position 150 is located between the first fixing position 140 and the third fixing position 160. The first fixing position 140 is provided with a first bolt 170, and the third fixing position 160 is provided with a second bolt 180.

[0073] When the gust generating system is in the first state, there are two motors 300, one motor 300 is fixed to the first fixing position 140 by the first bolt 170, and the other motor 300 is fixed to the third fixing position 160 by the second bolt 180. At this time, the system can realize dual-motor drive, which improves the flexibility and strength of gust simulation.

[0074] When the gust generating system is in the second state, the motor 300 is fixed to the second fixing position 150, and at least part of the first bolts 170 and at least part of the second bolts 180 fix the motor 300 to the second fixing position 150. At least part of the first bolts 170 refers to all of the first bolts 170 or part of the first bolts 170. At least part of the second bolts 180 refers to all of the second bolts 180 or part of the second bolts 180.

[0075] For example, refer to Figure 7 There are four first bolts 170 and four second bolts 180, and the four first bolts 170 are distributed at the four corners of the first fixing position 140, while the four second bolts 180 are distributed at the four corners of the third fixing position 160. It is worth noting that the two first bolts 170 close to the second fixing position 150 are located in the second fixing position 150, and the two second bolts 180 close to the second fixing position 150 are also located in the second fixing position 150. These bolts located in the second fixing position 150 are just distributed at the four corners of the second fixing position 150, so that the motor 300 can be firmly fixed in the fixing position by the first bolts 170 and the second bolts 180 located in the second fixing position 150.

[0076] Through such a design, it can be ensured that when the gust generating system is in the first state and the second state, the center of gravity of the support device 100 is always located at the center of the support device 100. This design effectively avoids the center of gravity shift of the support device 100, thereby reducing the vibration or shaking problem caused by the unstable center of gravity. This means that during use, the support device 100 can maintain a high stability, reduce unnecessary vibration of the system during operation, and ensure the accuracy and reliability of the experimental data.

[0077] In general, this structural design not only improves the supporting effect of the motor 300 under different working conditions, but also optimizes the stability and operational convenience of the overall gust generation system, providing a more reliable guarantee for gust simulation. This enables experimenters to focus more on data collection and analysis under various experimental conditions, and promotes the in-depth development of related research.

[0078] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vertical flow bidirectional adjustable gust generating system, applied to a wind tunnel (10), wherein the wind tunnel (10) has an air duct (13), characterized in that: include: A support device (100) is located outside the wind tunnel (10), the support device (100) and the wind tunnel (10) are arranged independently of each other, and a first gap (110) is arranged between the support device (100) and the wind tunnel (10); a blade (200) located in the wind duct (13), the blade (200) comprising a body (220) and a rotating rod (210), the rotating rod (210) penetrating a side wall of the wind tunnel (10) and being rotatably connected to the supporting device (100); The motor (300) is arranged on the supporting device (100) and is used to drive the blade (200) to rotate.

2. A vertical flow bidirectional adjustable gust generating system according to claim 1, characterized in that: The output shaft of the motor (300) is coaxially connected to the rotating rod (210); And / or, the motor (300) is one of a servo motor and a stepper motor.

3. A vertical flow bidirectional adjustable gust generating system according to claim 1, characterized in that: The side wall of the wind tunnel (10) is provided with a connection hole (11), and the rotating rod (210) passes through the connection hole (11) and is rotatably connected to the supporting device (100), wherein: A second gap (211) is provided between the rotating rod (210) and the connecting hole (11); And / or, in the axial direction of the rotating rod (210), a third gap (222) is provided between the two ends of the body (220) and the side wall of the wind tunnel (10).

4. A vertical flow bidirectional adjustable gust generating system according to claim 3, characterized in that: The connection hole (11) is located within a projection area of ​​the blade (200) along the axial direction of the rotating rod (210).

5. The vertical flow bidirectional adjustable gust generating system according to claim 3, characterized in that: The body (220) is detachably connected to the rotating rod (210).

6. A vertical flow bidirectional adjustable gust generating system according to claim 5, characterized in that: The rotating rod (210) comprises a first end (212) and a second end (213); the supporting device (100) comprises a main body (190) and a first supporting portion (120) and a second supporting portion (130) arranged relative to the main body (190); the first supporting portion (120) is located on one side of the wind tunnel (10); the second supporting portion (130) is located on the other side of the wind tunnel (10); the first end (212) is rotatably connected to the first supporting portion (120); the second end (213) is rotatably connected to the second supporting portion (130); the first supporting portion (120) is detachably connected to the main body (190); and the first supporting portion (120) is detachably connected to the rotating rod (210).

7. A vertical flow bidirectional adjustable gust generating system according to claim 6, characterized in that: The side wall of the wind tunnel (10) comprises a first cover plate (12), the first cover plate (12) being detachably mounted on the wind tunnel (10), the first cover plate (12) being provided with the connecting hole (11), and the first cover plate (12) being located close to the first end (212).

8. A vertical flow bidirectional adjustable gust generating system according to claim 7, characterized in that: The body (220) is provided with a through hole (221), the rotating rod (210) is slidably inserted into the through hole (221), the first end (212) can be inserted from one end of the through hole (221) to the other end, and the rotating rod (210) is provided with a stopper (214), the stopper (214) and the body (220) are rotationally limitedly matched in the circumferential direction of the rotating rod (210).

9. The vertical flow bidirectional adjustable gust generating system according to claim 1, characterized in that: The gust generating system includes a first state and a second state; When the gust generating system is in a first state, the number of the blades (200) is two; When the gust generating system is in the second state, the number of the blade (200) is one; The number of the motors (300) and the number of the blades (200) are arranged in one-to-one correspondence.

10. A vertical flow bidirectional adjustable gust generating system according to claim 9, characterized in that: The supporting device (100) comprises a first fixing position (140), a second fixing position (150), and a third fixing position (160) for fixing the motor (300), the second fixing position (150) being located between the first fixing position (140) and the third fixing position (160), the first fixing position (140) being provided with a first bolt (170), and the third fixing position (160) being provided with a second bolt (180); When the gust generating system is in the first state, there are two motors (300), one of the motors (300) is fixed to the first fixing position (140) by a first bolt (170), and the other motor (300) is fixed to the third fixing position (160) by a second bolt (180); When the gust generating system is in a second state, the motor (300) is fixed to the second fixing position (150), and at least part of the first bolts (170) and at least part of the second bolts (180) fix the motor (300) to the second fixing position (150).

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