An artificial rainmaking unmanned plane
By designing a storage box and a fan system on the drone, and using powdered rainmaking agent and temperature sensors to identify cloud types, the problem of low rainfall efficiency of existing drones has been solved, achieving a highly efficient rainmaking effect and anti-icing capability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTHWESTERN POLYTECHNICAL UNIV
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-24
AI Technical Summary
Existing artificial rainmaking drones use flare-based rainmaking agents, which have demanding storage conditions and poor diffusion effects, resulting in low rainfall efficiency.
The rain-inducing agent is stored in a storage box at the center of gravity of the drone, and connected to the spray port at the tail of the drone through a delivery pipe. It is diffused by airflow from the fan and propeller, and combined with temperature sensors to identify cloud type and selectively spray the rain-inducing agent.
It improves rainfall efficiency, enhances the drone's ability to diffuse within clouds and its rainfall effect, and has the ability to identify cold and warm clouds and prevent icing.
Smart Images

Figure CN122443686A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, specifically to an artificial rainmaking UAV. Background Technology
[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and program control devices. UAVs used in weather modification operations possess long-range meteorological detection capabilities, atmospheric data collection capabilities, and rain-enhancing catalyst dissemination capabilities. They also need reliable anti-icing and de-icing capabilities and the ability to operate under complex weather conditions. The application of UAVs in weather modification operations will greatly improve the efficiency of these operations and enrich their methods. UAV-based rain enhancement is characterized by low safety risk, long operation time, high mobility, and high execution rate. In recent years, large UAVs have complemented manned aircraft operations in rain enhancement and drought relief efforts, improving the ability to conduct weather modification in all times and terrains.
[0003] Currently, the "Double-Tailed Scorpion A" weather modification drone and the "Wing Loong-2H" rain enhancement drone have both demonstrated their capabilities in weather modification operations. However, existing rain enhancement drones use flares as rain-enhancing agents, which have relatively stringent storage conditions. Furthermore, the silver iodide particles produced when the flares are ignited in the clouds have poor diffusion effects, leading to reduced rainfall efficiency.
[0004] Therefore, the inventors provided a drone for artificial rainmaking. Summary of the Invention
[0005] (1) Technical problems to be solved This invention provides an artificial rainmaking drone that solves the technical problem of low rainmaking efficiency of drones.
[0006] (2) Technical solution This invention provides an artificial rainmaking drone, comprising a drone body, a storage box, a delivery pipe, a dispensing port, a fan, and a de-icing device. The storage box is filled with powdered rainmaking agent and installed in the middle of the drone body. The dispensing port is located at the tail of the drone body. The storage box is connected to the dispensing port through the delivery pipe. The fan is located inside the storage box and is used to blow the powdered rainmaking agent through the delivery pipe to the dispensing port for diffusion in the clouds. Two de-icing devices are respectively located on the leading edges of two sets of wings of the drone body. The horizontal height of the storage box is greater than the horizontal height of the dispensing port, and the discharge port of the storage box is equipped with an electric door.
[0007] Furthermore, the artificial rainmaking drone also includes a controller, which is electrically connected to the electric door and the de-icing device and is used to control the opening / closing of the electric door and the de-icing device.
[0008] Furthermore, the artificial rainmaking drone also includes a temperature sensor, which is installed on the outer surface of the drone body and electrically connected to the controller.
[0009] Furthermore, the storage box has a first chamber and a second chamber that are independent and enclosed to each other. The first chamber is filled with the powdered rain enhancer, and the second chamber is filled with at least one of sodium chloride, calcium chloride, ammonium nitrate and urea powder. The discharge ports of the first chamber and the second chamber are respectively provided with a first electric door and a second electric door.
[0010] Furthermore, the input end of the conveying pipe is a double connector, which is connected to the discharge ports of the first chamber and the second chamber, respectively.
[0011] Furthermore, the two fans are respectively installed in the corresponding first chamber and second chamber.
[0012] Furthermore, the lower end face of the inner wall of the first chamber and the second chamber is an inclined surface.
[0013] Furthermore, the inner walls of the first chamber and the second chamber are smooth surfaces.
[0014] Furthermore, a filter screen is provided at the discharge port.
[0015] Furthermore, the de-icing device is a heater, which has a resistance wire inside.
[0016] (3) Beneficial effects In summary, this invention stores powdered rain-enhancing agents in a storage box located at the center of gravity of the drone and connects it to the tail section via a delivery pipe. When the drone flies into the clouds, it determines the type of cloud (warm or cold), opens the storage box, and uses a combination of gravity flow and fan delivery to distribute the corresponding rain-enhancing agent. Under the action of the propeller airflow, the agent rapidly diffuses into the clouds to form raindrops, thereby improving rainfall efficiency. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of an artificial rainmaking drone provided in an embodiment of the present invention; Figure 2 This is a top view of the structure of the storage box of an artificial rainmaking drone provided in an embodiment of the present invention; Figure 3 This is a left view of the structure of the storage box of an artificial rainmaking drone provided in an embodiment of the present invention.
[0019] In the picture: 1-UAV body; 2-Storage box; 201-First chamber; 202-First chamber; 3-Conveying pipe; 4-Dispensing port; 5-Fan; 6-De-icing device; 7-Controller; 8-Temperature sensor. Detailed Implementation
[0020] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.
[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0023] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0024] This invention provides an artificial rainmaking drone, see [link / reference]. Figures 1-2The artificial rainmaking drone may include a drone body 1, a storage box 2, a delivery pipe 3, a dispensing port 4, a fan 5, and a de-icing device 6. The storage box 2 is filled with powdered rainmaking agent and is installed in the middle of the drone body 1. The dispensing port 4 is located at the tail of the drone body 1. The storage box 2 is connected to the dispensing port 4 through the delivery pipe 3. The fan 5 is located inside the storage box 2 and is used to blow the powdered rainmaking agent through the delivery pipe 3 to the dispensing port 4 for diffusion in the clouds. Two de-icing devices 6 are respectively located on the leading edges of the two sets of wings of the drone body 1. The horizontal height of the storage box 2 is greater than the horizontal height of the dispensing port 4, and the discharge port of the storage box 2 is equipped with an electric door.
[0025] In the above embodiment, the powdered rain-enhancing agent is stored in a storage box 2 located at the center of gravity of the drone body 1, and connected to a dispensing port 4 at the tail end via a delivery pipe 3. When flying into the clouds, the electric door at the outlet of the storage box 2 is opened, and the powdered rain-enhancing agent is dispensed using a fan 5. Simultaneously, under the action of the drone's propeller airflow, it rapidly diffuses into the clouds to form raindrops, thereby improving rainfall efficiency. The dispensing port 4 is equipped with a filter screen, and the de-icing device 6 is a heater containing a resistance wire, which removes frost from the wing surface through heating. This artificial rain-enhancing drone uses room-temperature powder dispensing and has the ability to penetrate clouds and prevent icing, identify warm and cold clouds, and dispense powdered powder separately.
[0026] In addition, to improve the wind resistance of artificial rainmaking drones, the wingspan of the drone body 1 can be appropriately increased, or the weight can be increased; to prevent large-scale icing of artificial rainmaking drones, de-icing fluid (ethylene glycol) can be sprayed before takeoff.
[0027] As an optional implementation, see [link to implementation details]. Figure 1 The artificial rainmaking drone also includes a controller 7, which is electrically connected to the electric door and the de-icing device 6 and is used to control the opening and closing of the electric door and the de-icing device 6. Specifically, the controller 7 can be a PLC (Programmable Logic Controller), which is small in size and light in weight, facilitating the lightweight design of the drone.
[0028] As an optional implementation, see [link to implementation details]. Figure 1 The artificial rainmaking drone also includes a temperature sensor 8, which is mounted on the outer surface of the drone body 1 and electrically connected to the controller 7. The temperature sensor 8 can monitor the ambient temperature in real time, identify warm and cold clouds, and prevent the artificial rainmaking drone from operating in extreme weather conditions.
[0029] As an optional implementation, see [link to implementation details]. Figure 2The storage box 2 has a first chamber 201 and a second chamber 202 that are independent and closed to each other. The first chamber 201 is filled with silver iodide powder (used for cold cloud rain enhancement) as artificial ice nuclei, which causes supercooled water droplets to sublimate into ice crystals on its surface. The ice crystals grow by continuously absorbing surrounding water vapor through the ice-water conversion process (evaporation-condensation process), and eventually fall due to gravity, melting in the warm layer to form rain. The second chamber 202 is filled with at least one of sodium chloride, calcium chloride, ammonium nitrate and urea powder (used for warm cloud rain enhancement) as a desiccant, which can absorb water vapor to form large cloud droplets (radius > 0.04 mm). These large cloud droplets rapidly merge and grow through collision and coalescence processes, and eventually overcome the updrafts to fall as rain. Specifically, the discharge ports of the first chamber 201 and the second chamber 202 are respectively equipped with a first electric door and a second electric door. The controller 7 is electrically connected to the first electric door and the second electric door respectively, and determines whether to open the first electric door or the second electric door based on whether the cloud temperature obtained in real time by the temperature sensor 8 is greater than zero, thereby dispersing the corresponding rain-inducing agent and selecting the cold cloud rain-inducing mode or the warm cloud rain-inducing mode.
[0030] Furthermore, the input end of the delivery pipe 3 is a double connector, which is connected to the outlet of the first chamber 201 and the second chamber 202 respectively, so that different types of rain-enhancing agents can be spread through the same pipe.
[0031] As an optional implementation method, see [link to implementation details]. Figure 2 Two fans 5 are respectively installed in the corresponding first chamber 201 and second chamber 202. For example... Figure 3 As shown, the lower end faces of the inner walls of the first chamber 201 and the second chamber 202 are inclined. Furthermore, the inner walls of the first chamber 201 and the second chamber 202 are smooth. The inclined design of the lower end faces of the inner walls of the chambers facilitates the rapid entry of the powdered rain-enhancing agent from the storage box 2 into the conveying pipe 3 under the action of gravity. The smooth surface can reduce the frictional resistance during the conveying process, thereby realizing the combined effect of gravity flow and fan feeding.
[0032] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. Furthermore, for the sake of brevity, detailed descriptions of known methods and techniques are omitted here.
[0033] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art without departing from the scope of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.
Claims
1. An artificial rainmaking drone, characterized in that, The device includes a drone body (1), a storage box (2), a conveying pipe (3), a dispensing port (4), a fan (5), and a de-icing device (6). The storage box (2) is filled with powdered rain enhancer and is installed in the middle of the drone body (1). The dispensing port (4) is located at the tail of the drone body (1). The storage box (2) is connected to the dispensing port (4) through the conveying pipe (3). The fan (5) is located in the storage box (2) and is used to blow the powdered rain enhancer through the conveying pipe (3) to the dispensing port (4) to diffuse in the clouds. The two de-icing devices (6) are respectively located on the leading edges of the two sets of wings of the drone body (1). The horizontal height of the storage box (2) is greater than the horizontal height of the dispensing port (4). The outlet of the storage box (2) is equipped with an electric door.
2. The artificial rainmaking drone according to claim 1, characterized in that, It also includes a controller (7), which is electrically connected to the electric door and the de-icing device (6) and is used to control the opening / closing of the electric door and the de-icing device (6).
3. The artificial rainmaking drone according to claim 2, characterized in that, It also includes a temperature sensor (8), which is installed on the outer surface of the UAV body (1) and electrically connected to the controller (7).
4. The artificial rainmaking drone according to claim 1, characterized in that, The storage box (2) has a first chamber (201) and a second chamber (202) that are independent and closed to each other. The first chamber (201) is filled with silver iodide powder, and the second chamber (202) is filled with at least one of sodium chloride, calcium chloride, ammonium nitrate and urea powder. The discharge ports of the first chamber (201) and the second chamber (202) are respectively provided with a first electric door and a second electric door.
5. The artificial rainmaking drone according to claim 4, characterized in that, The input end of the conveying pipe (3) is a double connector, which is connected to the discharge ports of the first chamber (201) and the second chamber (202) respectively.
6. The artificial rainmaking drone according to claim 4, characterized in that, The two fans (5) are respectively installed in the corresponding first chamber (201) and second chamber (202).
7. The artificial rainmaking drone according to claim 4, characterized in that, The lower end face of the inner wall of the first chamber (201) and the second chamber (202) is an inclined surface.
8. The artificial rainmaking drone according to claim 4, characterized in that, The inner walls of the first chamber (201) and the second chamber (202) are smooth surfaces.
9. The artificial rainmaking drone according to claim 1, characterized in that, A filter screen is provided at the discharge port (4).
10. The artificial rainmaking drone according to claim 1, characterized in that, The de-icing device (6) is a heater, which has a resistance wire inside.