Sound wave precipitation enhancement system and method based on airflow driving of unmanned aerial vehicle

Abstract

The invention discloses a sound wave precipitation enhancement system and method based on unmanned aerial vehicle airflow driving, and relates to the technical field of meteorological intervention. Comprising an unmanned aerial vehicle platform, a special air whistle subsystem and a ground control system, wherein the unmanned aerial vehicle platform is used as a mobile carrier to fly against a target cloud layer area; the special air whistle subsystem is fixedly mounted on the unmanned aerial vehicle platform and is used for generating and radiating low-frequency sound waves to the cloud layer by utilizing a high-speed airflow field; and the ground control system is in communication connection with the unmanned aerial vehicle platform and is used for remotely controlling flight and operation of the unmanned aerial vehicle platform and receiving data returned by the unmanned aerial vehicle platform. According to the invention, a traditional electric or fuel driving system is omitted, the power consumption, weight and complexity of the system are obviously reduced, and real green energy supply is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of weather intervention, and more particularly to an unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system and method. BACKGROUND

[0002] For a long time, weather modification technology mainly relies on aircraft to scatter iodized silver and other condensation nuclei or hygroscopic particles, and ground launch rockets or artillery shells carrying catalysts to achieve the purpose of rain enhancement and hail prevention. These methods have the disadvantages of high cost, complex operation, possible chemical pollution to the environment, and restrictions on airspace control.

[0003] In recent years, acoustic wave rain enhancement as a physical intervention method has gradually attracted attention. The basic principle is to use acoustic waves of a specific frequency to promote the collision and merging of cloud droplets, thereby accelerating the formation of precipitation. However, existing acoustic wave rain enhancement devices are mostly deployed on the ground, and the energy of the acoustic waves is severely attenuated during transmission to the air, with limited effective action height, making it difficult to precisely act on key parts of the cloud layer, and the actual effect is limited. Therefore, it is urgent to develop a new rain enhancement technology that can efficiently transport acoustic wave energy directly to the interior of the cloud layer, is flexible to operate, environmentally friendly, and low in cost.

[0004] Therefore, the unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system and method are proposed to solve the problems existing in the prior art, which is a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the present application provides an unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system and method to solve the technical problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system comprises an unmanned aerial vehicle platform, a specially designed windpipe system, and a ground control system, wherein The unmanned aerial vehicle platform is used as a mobile carrier to fly to the target cloud layer area; The specially designed windpipe system is fixedly installed on the unmanned aerial vehicle platform and is used to generate and radiate low-frequency acoustic waves to the cloud layer using a high-speed airflow field; The ground control system is in communication connection with the unmanned aerial vehicle platform and is used to remotely control the flight and operation of the unmanned aerial vehicle platform and receive data returned by the unmanned aerial vehicle platform.

[0007] Optionally, the specially designed windpipe system is connected to the unmanned aerial vehicle platform through a carbon fiber support, one end of which is fixed to the unmanned aerial vehicle body or landing gear load-bearing structure, and the other end is firmly connected to the mounting interface outside the windpipe resonance cavity.

[0008] Optionally, the special-purpose flute subsystem comprises a resonant cavity and a resonant neck pipe; The resonant cavity adopts a spherical or cylindrical design and is made of carbon fiber composite material or high-strength engineering plastic; The resonant neck pipe is a hollow tubular structure, one end of which is in communication with the resonant cavity to form an air inlet, and the other end is a sound outlet.

[0009] Optionally, the UAV platform is integrated with a flight control system, a GPS / RTK module, an IMU module and a weather sensor; The flight control system is used to control the UAV platform to fly and hover according to the instructions sent by the ground control system; The weather sensor is used to collect environmental data around the cloud layer; The UAV platform communicates with the ground control system through a wireless data link to receive control instructions and return its own position, flight attitude, battery capacity and weather sensor data.

[0010] Optionally, the ground control system is used to set the operation area, flight route and operation time length in combination with the weather radar and cloud image data, generate control instructions and send them to the UAV platform, and in the operation process, monitor the operation state in real time and adjust the position of the UAV platform according to the data returned by the UAV platform.

[0011] The sound wave rain enhancement method based on UAV airflow driving, the sound wave rain enhancement system based on UAV airflow driving according to any one of the preceding embodiments, comprises the following steps: S1, setting the operation area, flight route and operation time length of the target cloud layer through the ground control system, generating control instructions and sending them to the UAV platform; S2, the UAV platform receives the instructions, takes off, flies to the target cloud layer and hovers, and forms a high-speed airflow field; S3, the high-speed airflow field drives the special-purpose flute subsystem to generate a low-frequency sound wave of 50-500Hz and radiate to the surrounding cloud layer; S4, the low-frequency sound wave acts on the water droplets in the cloud and promotes the growth of the water droplets; S5, after reaching the preset operation time length or monitoring the rainfall signs, the UAV platform returns.

[0012] Optionally, the UAV platform continuously returns the position and weather data to the ground control system; the ground control system judges the rain enhancement effect according to the returned data, and remotely adjusts the flight parameters of the UAV platform when the target cloud layer moves, so that the special-purpose flute subsystem dynamically follows the movement of the cloud layer.

[0013] According to the above technical solutions, compared with the prior art, the sound wave rain enhancement system and method based on UAV airflow driving are provided, which have the following beneficial effects: 1) Using the airflow kinetic energy generated by the unmanned aerial vehicle flight as the only energy source for sound wave generation, the traditional electric or fuel-driven system is saved, the system power consumption, weight and complexity are significantly reduced, and truly green power supply is realized; 2) The specially-made windpipe subsystem is integrated into the unmanned aerial vehicle platform, the three-dimensional mobility and accurate positioning of the sound wave rain enhancement operation are realized, the unmanned aerial vehicle can directly fly to the target cloud layer area for operation, and the inherent defects of large propagation attenuation and limited action height of the ground sound source are overcome; 3) A pure physical rain enhancement technology is provided, which does not consume any chemical catalyst, is pollution-free, residue-free and environmentally friendly; at the same time, the sound wave energy is directly applied to the cloud layer by the airborne method, the energy transmission efficiency is high, and the rain enhancement effect is more significant. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0015] Figure 1 The flowchart of the sound wave rain enhancement method based on the unmanned aerial vehicle airflow driving provided by the present application is provided. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0017] The present application discloses a sound wave rain enhancement system based on unmanned aerial vehicle airflow driving, comprising: an unmanned aerial vehicle platform, a specially-made windpipe subsystem and a ground control system; wherein, The unmanned aerial vehicle platform is used as a mobile carrier to fly to the target cloud layer area; The specially-made windpipe subsystem is fixedly installed on the unmanned aerial vehicle platform, and is used to generate and radiate low-frequency sound waves to the cloud layer by using high-speed airflow field; The ground control system is in communication connection with the unmanned aerial vehicle platform, and is used to remotely control the flight and operation of the unmanned aerial vehicle platform, and receive the data returned by the unmanned aerial vehicle platform.

[0018] Further, the special-made flute subsystem is connected with the UAV platform through a carbon fiber support, one end of which is fixed on the UAV body or landing gear load-bearing structure, and the other end is firmly connected with the installation interface outside the resonance cavity of the flute.

[0019] Specifically, the air inlet of the special-made flute subsystem is precisely aligned with the high-speed airflow field of the UAV (the core area of the downwash of the multi-rotor and the windward surface of the fixed wing) without relative displacement.

[0020] Further, the special-made flute subsystem includes a resonance cavity and a resonance neck pipe. The resonance cavity is designed in a spherical or cylindrical shape and made of carbon fiber composite material or high-strength engineering plastic. The resonance neck pipe is a hollow tubular structure, one end of which is connected with the resonance cavity to form an air inlet, and the other end is a sound outlet.

[0021] Specifically, the working principle is as follows: the special-made flute subsystem does not need an electric circuit and a motor for sound production, but relies entirely on airflow driving. When the high-speed airflow generated by the UAV enters the resonance neck pipe, the airflow forms a turbulent flow in the neck pipe, which in turn causes the vibration of the air column in the resonance cavity. By precisely designing the cross-sectional area of the neck pipe and the volume of the cavity, the vibration frequency of the air column is stabilized in a specific range, and finally low-frequency sound waves are radiated through the sound outlet. The principle is similar to that of blowing air into a bottle, which causes the air in the bottle to vibrate and produce sound.

[0022] Further, the UAV platform is integrated with a flight control system, a GPS / RTK module, an IMU module, and a weather sensor. The flight control system is used to control the UAV platform to fly and hover according to the instructions sent by the ground control system. The weather sensor is used to collect environmental data around the cloud layer. The UAV platform communicates with the ground control system through a wireless data link to receive control instructions and transmit its own position, flight attitude, battery capacity, and weather sensor data.

[0023] Further, the ground control system is used to set the operation area, flight route, and operation time in combination with the weather radar and cloud data, generate control instructions, and send them to the UAV platform; and during the operation, the operation status is monitored in real time according to the data transmitted by the UAV platform, and the position of the UAV platform is adjusted.

[0024] Specifically, the UAV platform is preferably a model with large load capacity and long flight time, such as a six-rotor, eight-rotor, or vertical take-off and landing (VTOL) UAV combining multi-rotor and fixed wing. Its technical parameters need to meet the following requirements: Payload capacity: ≥5kg, to carry the sound wave generating subsystem and the installation structure.

[0025] Endurance: ≥60 minutes, to ensure sufficient time to fly to the work area and carry out rain enhancement operations.

[0026] Flight control system: It integrates a high-precision GPS / RTK module, weather sensor and IMU module, and has the ability to fly autonomous route and hover at fixed point. It can fly according to the path planned by ground command or preset weather data.

[0027] Data link: It has remote control and data transmission functions, and is used to receive control commands and transmit back the status, location and weather sensor data of the UAV.

[0028] For multi-rotor drones: it is preferable to install it in the downwash core area directly below the propeller disk. This area has a high and stable airflow velocity, typically reaching 15-25 m / s, which can provide the strongest driving energy.

[0029] For fixed-wing UAVs: the preferred mounting location is the front of the nose or the leading edge of the wing, facing the wind. The mounting method is a rigid connection, securely attached to the UAV fuselage or landing gear structure via carbon fiber brackets to prevent harmful vibrations in the airflow.

[0030] Specifically, drones are used as mobile platforms. Drones possess extremely high three-dimensional spatial maneuverability, allowing them to flexibly fly directly below, inside, or even above target clouds, achieving "face-to-face" sound wave radiation. This significantly shortens the sound wave propagation distance: from several kilometers between the ground and the cloud layer to tens to hundreds of meters between the drone and the cloud layer, fundamentally solving the sound wave attenuation problem and resulting in an order-of-magnitude improvement in energy efficiency. Furthermore, combined with real-time data from weather radar and cloud images, drones can autonomously navigate to the most favorable areas for rain enhancement within the clouds and move with the clouds, enabling dynamic, precise, and continuous intervention.

[0031] The drone operation process is as follows: Operational Preparation: Operators, using weather radar data and cloud imagery, determine the location, altitude, and movement trajectory of the target cloud layer. They then pre-set the UAV's flight path, hovering altitude, and operation time in the ground control system. Simultaneously, they check the UAV's battery level, payload status (baghorn installation secureness), and data link stability.

[0032] Takeoff and cruise: Start the drone and make it take off automatically according to the preset route. During the flight, the drone uses high-precision GPS / RTK and IMU systems to locate itself in real time, adjust its flight attitude, maintain stable cruise, and gradually approach the target cloud area.

[0033] Precise positioning: when the UAV reaches the target cloud layer or the nearby area, the ground control system combines the real-time position data returned by the UAV with the meteorological sensor data to fine-tune the position of the UAV, so that it can accurately stay in the key action area of the cloud layer (such as the dense water droplet area in the lower part of the cloud layer), and real-time adjust the flight parameters according to the movement of the cloud layer, to realize dynamic following.

[0034] Job completion and return: after completing the preset rain enhancement operation time, the ground control system issues a return instruction, the UAV automatically plans a return route, reduces the flight height, and safely lands at the designated location. The operator performs subsequent inspection and maintenance on the UAV and the special wind flute system.

[0035] The embodiment of the application also discloses a sound wave rain enhancement method based on the airflow driving of the UAV, and a flow chart is shown in Figure 1 The method comprises the following steps: S1, setting the operation area, flight route and operation time of the target cloud layer through the ground control system, generating a control instruction and sending it to the UAV platform; S2, the UAV platform receives the instruction, takes off, flies to the target cloud layer area and hovers, and forms a high-speed airflow field; S3, the high-speed airflow field drives the special wind flute system to generate a low-frequency sound wave of 50-500Hz and radiate to the surrounding cloud layer; S4, the low-frequency sound wave acts on the water droplets in the cloud and promotes the growth of the water droplets; S5, after reaching the preset operation time or monitoring the rainfall signs, the UAV platform returns.

[0036] Further, the UAV platform continuously returns the position and meteorological data to the ground control system; the ground control system judges the rain enhancement effect according to the returned data, and remotely adjusts the flight parameters of the UAV platform when the target cloud layer moves, so that the special wind flute system dynamically follows the movement of the cloud layer.

[0037] Specifically, the specific method for realizing rain enhancement is as follows: System assembly and deployment: the special wind flute system is fixedly connected with the UAV platform through the carbon fiber support, so as to ensure that the air inlet of the special wind flute system is accurately directed to the high-speed airflow field of the UAV (the core area of the wash flow under the propeller of the multi-rotor UAV, the windward surface of the front part of the fuselage of the fixed-wing UAV), and meteorological sensors (such as temperature and humidity sensors) are carried on the UAV for real-time collection of cloud layer surrounding environment data.

[0038] Airflow capture and sound wave generation: After the UAV flies to the target cloud area according to the operation process, the high-speed airflow generated in the flight process (the downwash of the multi-rotor and the wind flow of the fixed wing) directly acts on the air inlet of the specially designed wind flute system. The airflow entering the neck pipe causes the resonance of the air column in the cavity, generating a low-frequency sound wave of 50-500 Hz, and the sound wave is directly radiated to the inside of the cloud through the sound outlet of the wind flute.

[0039] Sound wave acting on the cloud: The low-frequency sound wave propagates in the form of a spherical wave in the cloud. Since the distance between the UAV and the cloud is only tens to hundreds of meters, the sound wave energy attenuation is very small. When the sound wave acts on the water droplets in the cloud, through the three mechanisms of vibration and relative motion, sound wake effect and overcoming electrostatic repulsion, it promotes the collision and merging of water droplets and accelerates the transformation of cloud droplets into raindrops.

[0040] Dynamic monitoring and adjustment: During the entire rain enhancement process, the UAV transmits the data of its position, flight state and meteorological sensors to the ground control system in real time through the data link. The operator judges the rain enhancement effect according to the data, and if the target cloud moves, the flight parameters of the UAV can be remotely adjusted to ensure that the wind flute is always in the effective action area, so that the sound wave can continuously interfere with the cloud until the expected rain enhancement purpose is achieved.

[0041] The core of the principle of the application is the efficient conversion of energy form twice: Kinetic energy to sound energy: Through the structure of the wind flute based on the Helmholtz resonance principle, the kinetic energy of the airflow of the UAV is efficiently converted into sound energy of a specific frequency.

[0042] Sound energy to mechanical energy (precipitation): Through various physical mechanisms induced by sound waves in the cloud, sound energy is converted into mechanical energy that promotes water droplet collision, ultimately achieving the purpose of rain enhancement.

[0043] The efficiency of the entire process depends on the accurate design of the Helmholtz resonance frequency, the optimal arrangement of the specially designed wind flute system in the UAV airflow field, and the precise arrival of the UAV to the target cloud. The specific process is as follows: Stage one: airflow driving and energy capture When the UAV is flying, the propeller generates lift or thrust, accelerating a large amount of air to form a high-speed airflow field.

[0044] For multi-rotor UAVs: a high-speed, concentrated downwash will be formed below the rotor disc. The speed and dynamic pressure q of this airflow are the energy source to drive the wind flute.

[0045] For fixed-wing UAVs: high-speed wind flow exists in the front of the fuselage, the leading edge of the wing and behind the engine propeller.

[0046] Dynamic pressure ; where: P is the dynamic pressure, unit Pa, p is the air density, unit kg / m³, v is the air flow velocity, unit m / s.

[0047] The air inlet of the special flute subsystem is directly opposite to this high-speed airflow area, and the airflow flows into the inlet of the special flute subsystem, and part of the dynamic pressure is converted into static pressure to provide initial energy for sound wave generation.

[0048] Stage two: Helmholtz resonance and sound wave generation (core physical process)

[0049] The flute used is a typical Helmholtz resonator, which is usually composed of a cavity (volume V) and a short neck (neck length L, cross-sectional area S). In this invention, the airflow of the UAV acts as an airflow excitation source that continuously blows through the neck.

[0050] The natural resonance frequency (f0) is determined by the cavity volume and the neck geometry, and the calculation formula is: f ; where: f0 is the resonance frequency, unit Hz, which is the frequency of the sound wave emitted by the special flute subsystem, c c is the speed of sound, unit m / s, which varies with temperature, about 340 m / s at room temperature, S S is the cross-sectional area of the neck opening, unit m², V is the volume of the cavity, unit m³, L is the effective length of the neck, unit m, which is usually slightly larger than its physical length and needs to be corrected for the effect of the opening end. (for a circular opening).

[0051] Through precise design of the cavity volume, sound outlet size and air inlet shape of the special flute subsystem, it can produce strong low-frequency sound waves with a frequency of 50-500 Hz under the excitation of airflow at a certain speed. The frequency band sound waves can couple with the natural vibration frequency of water droplets in the cloud, effectively promoting the vibration, collision and merging process of water droplets.

[0052] The flute is installed in the high-speed airflow field of the UAV (such as the core airflow area below the propeller of a multi-rotor UAV or the windward surface of the front part of a fixed-wing UAV fuselage), and uses the airflow generated by the UAV during cruising to automatically drive the sound generation, without the need for an additional power source.

[0053] Stage three: sound wave propagation and action in the cloud

[0054] ​Propagation: The sound waves radiate from the flute as a spherical wave into the surrounding cloud. Due to the close proximity or penetration of the drone into the cloud, the propagation distance (d) is very short, and the sound intensity decay is mainly due to geometric spreading, with minimal atmospheric absorption.

[0055] Sound Intensity (Ideal Spherical Wave Propagation) ; Where: I I is the sound intensity in W / m², P P is the sound power in W, d d is the propagation distance in m. Short propagation distances ensure that sufficient sound energy can be input into the cloud.

[0056] Cloud Microphysical Processes (Acoustic Coagulation): The primary mechanism of action of low-frequency sound waves radiated into the cloud is to promote the collision and coalescence of water droplets.

[0057] Mechanism One: Vibration and Relative Motion: Water droplets of different sizes respond differently to the sound field. Under the action of sound waves, water droplets vibrate and produce relative motion, greatly increasing the probability of collision between them.

[0058] Mechanism Two: Acoustic Wake Effect: When larger water droplets move in the sound field, an acoustic wake is formed behind them, and smaller water droplets will be sucked into this wake and collide with the large water droplets.

[0059] Mechanism Three: Overcoming Electrostatic Repulsion: Small water droplets in the cloud often have the same charge and have a mutual repulsive electrostatic potential barrier. The mechanical vibration energy provided by the sound wave can help water droplets overcome this potential barrier, allowing them to come close enough and coalesce under the action of Van der Waals force.

[0060] These processes significantly accelerate the rate at which cloud droplets grow from small particles (cloud droplets, ~10 μm) to large particles (raindrops, ~1000 μm), thereby promoting the formation of precipitation.

[0061] Each embodiment in the specification is described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between each embodiment can be referred to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part.

[0062] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system, characterized in that, The application relates to an unmanned aerial vehicle airflow-driven sound wave rain enhancement system. The system comprises an unmanned aerial vehicle platform, a special-purpose windpipe subsystem and a ground control system. The unmanned aerial vehicle platform is used as a mobile carrier to fly to a target cloud layer area. The special-purpose windpipe subsystem is fixedly installed on the unmanned aerial vehicle platform and is used for generating and radiating low-frequency sound waves to the cloud layer by using a high-speed airflow field. The ground control system is in communication connection with the unmanned aerial vehicle platform and is used for remotely controlling the flight and operation of the unmanned aerial vehicle platform and receiving data returned by the unmanned aerial vehicle platform.

2. The unmanned aerial vehicle airflow-driven sound wave rain enhancement system according to claim 1, characterized in that, The special-purpose windpipe subsystem is connected with the unmanned aerial vehicle platform through a carbon fiber support, one end of the carbon fiber support is fixed on a body or landing gear load-bearing structure of the unmanned aerial vehicle, and the other end is firmly connected with a mounting interface outside a resonance cavity of the windpipe. 3.The UAV airflow-driven acoustic wave rain enhancement system according to claim 1, wherein, The special-purpose windpipe subsystem comprises a resonance cavity and a resonance neck pipe. The resonance cavity is designed in a spherical or cylindrical shape and is made of carbon fiber composite material or high-strength engineering plastic. The resonance neck pipe is a hollow tubular structure, one end of the resonance neck pipe is communicated with the resonance cavity to form an air inlet, and the other end is a sound outlet.

4. The unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system according to claim 1, characterized in that, The unmanned aerial vehicle platform is integrated with a flight control system, a GPS / RTK module, an IMU module and a meteorological sensor. The flight control system is used for controlling the unmanned aerial vehicle platform to fly and hover according to the instruction sent by the ground control system. The meteorological sensor is used for collecting environmental data around the cloud layer. The unmanned aerial vehicle platform is in bidirectional communication with the ground control system through a wireless data link to receive the control instruction and return the position, flight attitude, battery capacity and meteorological sensor data of the unmanned aerial vehicle platform.

5. The unmanned aerial vehicle airflow-driven acoustic wave rain enhancement system according to claim 1, characterized in that, The ground control system is used for setting the operation area, flight route and operation time length in combination with meteorological radar and cloud image data, generating the control instruction and sending the control instruction to the unmanned aerial vehicle platform, and monitoring the operation state in real time and adjusting the position of the unmanned aerial vehicle platform according to the data returned by the unmanned aerial vehicle platform during the operation.

6. The method of driving sound wave for rain enhancement based on UAV air flow, characterized in that The application further discloses an unmanned aerial vehicle airflow-driven sound wave rain enhancement system. S1, setting the operation area, flight route and operation time length of the target cloud layer through the ground control system, generating the control instruction and sending the control instruction to the unmanned aerial vehicle platform; S2, taking off after receiving the instruction, flying to the target cloud layer area and hovering to form a high-speed airflow field; S3, the high-speed airflow field drives the special-purpose windpipe subsystem to generate 50-500Hz low-frequency sound waves and radiate the low-frequency sound waves to the surrounding cloud layer; S4, the low-frequency sound waves act on the water droplets in the cloud and promote the growth of the water droplets; S5, after the preset operation time length is reached or the rainfall sign is monitored, the unmanned aerial vehicle platform returns.

7. The unmanned aerial vehicle airflow driven sound wave rain enhancement method according to claim 6, characterized in that, The unmanned aerial vehicle platform continuously returns the position and meteorological data to the ground control system, the ground control system judges the rain enhancement effect according to the returned data, remotely adjusts the flight parameters of the unmanned aerial vehicle platform when the target cloud layer moves, and makes the special-purpose windpipe subsystem dynamically follow the movement of the cloud layer.

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