Electromagnetic rope-throwing dart for rescue

Abstract

The utility model relates to rescue equipment technical field especially rescue electromagnetic rope throwing bullet, including power component, power component is made of material that can be driven by electromagnetic field, the power component is provided with the reducing channel for the rescue rope to pass, the reducing channel is configured as gradually releasing rescue rope in the process of launching flight, still include: the receiving component, install in power component one end, are used for receiving rescue rope, the receiving component is fixedly connected with one end of rescue rope, the receiving component is in the intercommunication state with reducing channel, the other end of rescue rope passes through reducing channel and extends out, this technical scheme effectively solved the problem that manual rope throwing is limited to the strength and skill of the thrower in the prior art, it is difficult to realize long-distance throwing, and the problems such as complex operation, lower safety, easy to be affected by environment of using powder rope throwing device.

Description

Technical Field

[0001] This utility model relates to the field of rescue equipment technology, and in particular to an electromagnetic rope-throwing projectile for rescue. Background Technology

[0002] Rope throwers are emergency rescue devices widely used in ship-to-ship, ship-to-shore, high-rise building, and mountain stream rescue and towing operations. Traditional rope throwers primarily use gunpowder or pneumatic launching methods. Gunpowder-fired rope throwers use high-pressure gas generated by gunpowder combustion to propel the projectile, but suffer from low safety, high noise, limited storage and transportation, and environmental pollution. Pneumatic rope throwers utilize compressed air for launching, which improves safety, but launch distance and accuracy are often limited by gas source pressure and system volume, and performance is unstable at high altitudes or in extreme environments.

[0003] With the development of electromagnetic technology, electromagnetic rope projectiles have attracted attention due to their advantages such as stable acceleration, high controllability, and no smoke or fire. Electromagnetic launch utilizes an energy-storing pulse capacitor to instantaneously discharge an electromagnetic coil, generating a strong magnetic field that propels the armature and the projectile. However, electromagnetic rope projectile technology faces significant bottlenecks in practical applications: because the launch process is a short, instantaneous impact launch (acceleration stroke is typically less than 60mm), it is difficult to effectively accelerate a flexible rope over long distances.

[0004] Existing electromagnetic rope-launching systems mostly employ an external rope design, where a traction head propels one end of the rope through flight, with the rope exposed outside the projectile. With this external rope, the rope is exposed to the air during flight, and air resistance increases exponentially with distance, preventing the rope from reaching the target distance. Furthermore, the rope is susceptible to crosswind interference, resulting in an unstable trajectory. While an internal rope design reduces drag during flight, the short-duration impact characteristics of traditional electromagnetic launchers make it difficult to effectively accelerate the internal rope. As a flexible material, the rope cannot directly acquire sufficient kinetic energy within a short distance, leading to poor separation or release of the rope from the projectile after launch, thus hindering long-distance launching.

[0005] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electromagnetic rope-throwing projectile for rescue purposes.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an electromagnetic rope-throwing projectile for rescue, comprising a power component made of a material capable of being driven by an electromagnetic field, wherein the power component is provided with a variable-diameter channel for a rescue rope to pass through; further comprising: A storage component, installed at one end of the power component, is used to store the rescue rope. The storage component is fixedly connected to one end of the rescue rope, and the storage component is in communication with the diameter-changing channel. The other end of the rescue rope passes through the diameter-changing channel and extends outward.

[0008] This technical solution enables electromagnetically driven rope throwing, improving the throwing distance and precision while ensuring the rescue rope is gradually released during flight, avoiding entanglement and improving rescue efficiency and safety.

[0009] Preferably, the power component includes: The round tube is made of aluminum alloy. A tapered tube is fixedly installed at one end of a round tube and integrally formed with the round tube; the other end of the tapered tube is fixedly connected to a storage component. The variable diameter channel consists of hollow sections of a conical tube and a circular tube. During launch and flight, the tapered surface between the conical tube and the circular tube, with its inner diameter decreasing, propels the rescue rope to accelerate, thereby enabling the gradual release of the rescue rope.

[0010] This technical solution utilizes the special structure of tapered and round tubes to accelerate and gradually release the rescue rope under electromagnetic drive, further improving the stability and effectiveness of rope throwing.

[0011] Preferably, it further includes a tail fin fixed to the surface of the circular tube, the tail fin comprising: The central tube is fitted onto the surface of the circular tube; Multiple blades are arranged in a circumferential array on the surface of the central tube.

[0012] This technical solution allows the tail fins to effectively stabilize the missile's flight attitude and improve the accuracy and stability of the rope throwing.

[0013] Preferably, the length of the wing is longer than the length of the central tube, so as to avoid the fixed end plate of the transmitter coil.

[0014] This technical solution, through the optimized design of the wing length, can effectively avoid interference with the transmitter coil, ensuring a smooth launch process.

[0015] Preferably, the front part of the wing is set as a conical surface, and the rear part is set as a flat end surface in order to facilitate the tail fin to maintain a certain rigidity during the acceleration of the projectile. The root of the wing is set with an arc for transition, which can greatly improve the damage caused by stress concentration at the root of the wing during acceleration or when the tail fin lands.

[0016] This technical solution, through the optimized design of the wing shape, can enhance the rigidity of the tail fin, reduce stress concentration, and improve the durability and reliability of the projectile.

[0017] Preferably, the storage component includes: An aluminum tube is used to store and organize rescue ropes. One end of the aluminum tube is fixedly connected to a tapered tube, and the other end of the aluminum tube is equipped with a flow guide.

[0018] This technical solution uses aluminum tubing as a storage component to effectively organize and protect the rescue rope, ensuring it is in good condition before launch.

[0019] Preferably, the flow guiding component includes: A fairing is installed at the end of the aluminum tube away from the conical tube and is used to guide air during flight. The end of the fairing away from the aluminum tube is arc-shaped.

[0020] This technical solution effectively reduces flight drag and improves the missile's flight efficiency and range.

[0021] Preferred options also include: The first boss is installed at one end of the flow guide. The first boss is located inside the aluminum tube and is threadedly connected to the inner wall of the aluminum tube.

[0022] This technical solution enhances the connection strength between the fairing and the aluminum tube, thereby improving the overall structural stability.

[0023] Preferred options also include: The second boss is installed at one end of the tapered tube. The second boss is located inside the aluminum tube and is threaded to the inner wall of the aluminum tube.

[0024] This technical solution enhances the connection strength between the tapered tube and the aluminum tube, further improving the overall structural reliability.

[0025] Preferably, the rescue rope is a polyethylene fiber rope.

[0026] This technical solution, using polyethylene fiber rope as the rescue rope, can provide higher strength and lighter weight, improving rescue efficiency and safety.

[0027] Compared with the prior art, the present invention has the following beneficial effects: This technical solution effectively solves the problems of existing technologies where manual rope throwing is limited by the thrower's strength and skill, making long-distance throwing difficult, as well as the complex operation, low safety, and susceptibility to environmental influences associated with gunpowder rope throwers. Through electromagnetic drive, this invention enables long-distance throwing, overcoming the limitations of traditional methods. The rescue rope is gradually released during flight, preventing tangling and knots, ensuring smooth deployment, and greatly improving rescue efficiency and safety. Especially in special rescue scenarios such as water rescues, high-altitude rescues, and mountain rescues, this invention can quickly and accurately throw the rescue rope to the target area, effectively avoiding threats to the lives of trapped personnel due to rescue delays, and meeting the modern rescue demands for efficiency, precision, and safety. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial sectional view of the present invention; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram illustrating the stability of the rope-throwing projectile of this utility model.

[0029] In the diagram: 1. Radiator; 2. Aluminum tube; 3. Conical tube; 4. Circular tube; 5. Center tube; 6. Wing; 7. Rescue rope; 8. First protrusion; 9. Second protrusion. Detailed Implementation

[0030] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0031] like Figures 1 to 4 The electromagnetic rope-throwing projectile for rescue shown includes a power unit made of a material capable of being driven by an electromagnetic field, and a variable-diameter channel for a rescue rope 7 to pass through; it also includes: The storage component is installed at one end of the power component and is used to store the rescue rope 7. The storage component is fixedly connected to one end of the rescue rope 7 and is in communication with the diameter-changing channel. The other end of the rescue rope 7 passes through the diameter-changing channel and extends outward.

[0032] The core of the electromagnetic rope-throwing projectile disclosed in this embodiment lies in utilizing an electromagnetic field to drive a power component, achieving efficient and precise launching. The power component, the main structure of the projectile, is made of a material capable of being driven by an electromagnetic field. For example, it can be a metallic material with good conductivity and certain magnetic response characteristics, such as aluminum alloy, copper alloy, or their composite materials. The power component is equipped with a variable-diameter channel for the rescue rope 7 to pass through. This variable-diameter channel is configured to gradually release the rescue rope 7 during launch. This gradual release design aims to ensure that the rescue rope 7 unfolds smoothly and orderly during flight, avoiding entanglement or resistance caused by sudden release, thereby improving the projectile's flight stability and range.

[0033] Specifically, this electromagnetic rope-launching projectile for rescue also includes a storage component, installed at one end of the power unit, for storing the rescue rope 7. The storage component is fixedly connected to one end of the rescue rope 7, ensuring that the rescue rope 7 does not detach from the projectile during launch. The storage component is in communication with the variable-diameter channel, allowing the rescue rope 7 stored within it to smoothly pass through the variable-diameter channel and extend outwards. The other end of the rescue rope 7 passes through the variable-diameter channel and extends outwards, so that it can be secured or used for traction after launch.

[0034] As a preferred embodiment, the propulsion component can be composed of various structures, such as one or more interconnected tubular structures, or a single-piece streamlined shell. Regardless of the structure, the material selection and geometry design of the propulsion component should fully consider its response characteristics in an electromagnetic field and its aerodynamic performance to ensure that the rope-launching projectile achieves optimal driving force and minimal air resistance during launch and flight. The design of the variable-diameter channel is also crucial; its inner wall can be polished to reduce friction when the rescue rope 7 passes through, or a guide structure can be provided to guide the rescue rope 7 for smooth release. The storage component can store the rescue rope 7 by spiral winding, folding, or stacking to maximize the use of internal space and ensure the orderly release of the rescue rope 7.

[0035] When using this electromagnetic rope-throwing projectile for rescue operations, first, properly store the rescue rope 7 in the storage unit, fixing one end to the storage unit and extending the other end through the variable-diameter channel of the power unit. Then, load the projectile into the electromagnetic launcher. When the launcher is activated, the electromagnetic field instantly acts on the power unit, generating a powerful thrust that propels the projectile towards the target area. During flight, because the variable-diameter channel on the power unit is configured to release the rescue rope 7 gradually, the rope 7 unfolds smoothly and orderly as the projectile flies. This gradual release mechanism ensures that the resistance experienced by the rescue rope 7 in the air is uniform and controllable, avoiding flight instability or reduced range that might result from sudden unfolding of the rope 7. Once the projectile reaches the target area, the other end of the rescue rope 7 can be secured, establishing a connection or traction variable-diameter channel to complete the rescue mission. Throughout the process, the electromagnetic drive of the power component ensured the powerful force and precise control of the launch, while the storage component ensured the orderly storage and release of the rescue rope 7. The design of the variable diameter channel further optimized the rope deployment process, together achieving efficient and safe rescue.

[0036] As one embodiment of this utility model, the power component includes: Round tube 4 is made of aluminum alloy. The tapered tube 3 is fixedly installed at one end of the round tube 4 and is integrally formed with the round tube 4. The other end of the tapered tube 3 is fixedly connected to the storage component. The variable diameter channel consists of the hollow parts of the conical tube 3 and the circular tube 4. During the launch and flight process, the cone surface with a reduced inner diameter between the conical tube 3 and the circular tube 4 is used to accelerate the rescue rope 7, so as to gradually release the rescue rope 7.

[0037] The solution proposed in this application effectively solves the problems of jamming or uneven release of the rescue rope 7 during release by designing the power component as a combination of a circular tube 4 and a conical tube 3, and utilizing the conical variable-diameter channel formed inside it. Specifically, when the electromagnetic rope launcher is launched, the power component flies forward under the influence of the electromagnetic field. The rescue rope 7 is housed in the housing component and extends out through the hollow variable-diameter channel formed by the conical tube 3 and the circular tube 4. As the launcher flies, the rescue rope 7 is subjected to the action of the conical structure with a reduced inner diameter between the conical tube 3 and the circular tube 4 within the variable-diameter channel. This conical structure generates a forward thrust on the rescue rope 7, allowing it to be continuously and evenly accelerated and gradually released during flight. This design ensures that the rescue rope 7 can smoothly and steadily detach from the launcher throughout the flight, avoiding problems such as unstable flight attitude or entanglement of the rescue rope 7 caused by sudden release or jamming.

[0038] In some preferred embodiments, the circular tube 4 can be made of high-strength aluminum alloy, such as 7075 aluminum alloy, to provide sufficient structural strength while ensuring lightweight design. The tapered tube 3 is integrally formed with the circular tube 4, which can be achieved through precision casting or CNC machining to ensure the smoothness and precision of its internal tapered surface, thereby reducing the frictional resistance of the rescue rope 7 during release. The tapered surface design of the variable diameter channel can be optimized and adjusted according to the material, diameter, and expected release speed of the rescue rope 7. For example, the angle of the tapered surface can be precisely calculated to ensure that the rescue rope 7 achieves the best acceleration and release effect at different flight speeds. The storage component can be fixedly connected to the tapered tube 3 by means of threaded connection or welding to ensure the strength and reliability of the connection.

[0039] As one embodiment of this utility model, it also includes a tail fin fixed to the surface of the circular tube 4, the tail fin comprising: The central tube 5 is fitted onto the surface of the circular tube 4; Multiple blades 6 are arranged in a circular array on the surface of the central tube 5.

[0040] The proposed solution achieves better aerodynamic stability during launch and flight of the electromagnetic rope-throwing projectile by fixing tail fins to the surface of the circular tube 4. When the projectile is in flight, the fins 6 interact with the airflow, generating a stable aerodynamic torque, thereby effectively suppressing unstable movements such as yaw, pitch, and roll. This stabilizing effect helps the projectile maintain its predetermined flight trajectory and reduces the impact of external interference on its flight attitude. Furthermore, the tail fins also help guide the airflow during acceleration, further optimizing the projectile's aerodynamic performance.

[0041] In one embodiment of this utility model, the length of the wing 6 is longer than the length of the central tube 5, which is used to avoid the fixed end plate of the transmitter coil.

[0042] The solution proposed in this application sets the length of the wing 6 to be longer than that of the center tube 5, so that the end of the wing 6 can effectively avoid the fixed end plate of the launcher coil, thereby ensuring the normal operation of the tail fin, avoiding interference from the fixed end plate to the tail fin, and ensuring the stability of the rescue electromagnetic rope projectile during flight.

[0043] In one embodiment of this utility model, the front part of the wing 6 is set as a conical surface, and the rear part is set as a flat end face to facilitate the tail fin maintaining a certain rigidity during the acceleration of the projectile. The root of the wing 6 and the central tube 5 are provided with an arc for transition, which can greatly improve the damage caused by stress concentration at the root of the wing 6 during acceleration or tail fin landing. Therefore, the solution of this application can effectively solve the problem of deformation or damage of the tail fin due to uneven force during flight, and improve the reliability and service life of the electromagnetic rope-throwing projectile for rescue.

[0044] As one embodiment of this utility model, the storage component includes: Aluminum tube 2 is used to store the organized rescue rope 7. One end of aluminum tube 2 is fixedly connected to cone tube 3, and the other end of aluminum tube 2 is equipped with a flow guide component.

[0045] The aluminum tube 2 is used to store the prepared rescue rope 7. It can be made of lightweight, high-strength aluminum alloy to reduce overall weight and improve the range and accuracy of the rope-throwing projectile. The internal space of the aluminum tube 2 can be rationally designed according to the length and thickness of the rescue rope 7 to ensure that the rescue rope 7 can be completely stored inside the aluminum tube 2 without being squeezed or deformed. One end of the aluminum tube 2 is fixedly connected to the tapered tube 3, which can be achieved through threaded connection, welding, or other methods to ensure the strength and reliability of the connection. The other end of the aluminum tube 2 is equipped with a flow guide component to guide air during flight, reduce air resistance, and improve the flight stability and accuracy of the rope-throwing projectile.

[0046] As one embodiment of this utility model, the flow guiding component includes: The deflector 1 is installed at the end of the aluminum tube 2 away from the cone tube 3. It is used to guide air during flight. The end of the deflector 1 away from the aluminum tube 2 is arc-shaped to reduce air resistance and improve the flight speed and accuracy of the rope projectile, thereby ensuring that the rescue rope 7 can be accurately thrown to the target area.

[0047] As one embodiment of this utility model, it also includes: The first boss 8 is installed at one end of the flow guide shroud 1. The first boss 8 is located inside the aluminum tube 2 and is threadedly connected to the inner wall of the aluminum tube 2.

[0048] The first boss 8 refers to a structure installed on the air guide 1 for connecting with the aluminum tube 2. Specifically, the first boss 8 can be machined into a cylindrical structure with external threads, while the inner wall of the aluminum tube 2 is machined with internal threads that match the first boss 8. Through the threaded connection, the first boss 8 can be firmly fixed inside the aluminum tube 2, thereby achieving a reliable connection between the air guide 1 and the aluminum tube 2.

[0049] The solution proposed in this application, by setting a first protrusion 8 on the fairing 1 and fixing it inside the aluminum tube 2 using a threaded connection, can effectively improve the connection strength and stability between the fairing 1 and the aluminum tube 2. Compared with other connection methods, the threaded connection has the advantages of reliable connection and convenient disassembly, which can ensure the structural integrity of the rescue electromagnetic rope projectile during flight and avoid safety hazards caused by loose connection.

[0050] As one embodiment of this utility model, it also includes: The second boss 9 is installed at one end of the tapered tube 3. The second boss 9 is located inside the aluminum tube 2 and is threadedly connected to the inner wall of the aluminum tube 2.

[0051] The second protrusion 9 refers to an annular structure set at the end of the tapered tube 3. Its outer diameter matches the inner diameter of the aluminum tube 2, and it is threaded on its outer surface. By engaging with the threaded inner wall of the aluminum tube 2, a fixed connection between the tapered tube 3 and the aluminum tube 2 is achieved. As a preferred embodiment, the second protrusion 9 can be made of aluminum alloy material to ensure its strength and corrosion resistance.

[0052] The solution in this application avoids the problems of insufficient connection strength or low assembly accuracy that may exist in traditional connection methods such as welding or bonding by setting a second boss 9 on the tapered tube 3 and fixing it to the aluminum tube 2 through a threaded connection. Since the threaded connection is detachable, it also facilitates subsequent maintenance and replacement.

[0053] As one embodiment of this utility model, the rescue rope 7 is a polyethylene fiber rope with a density of 0.918 g / cm³ to 0.96 g / cm³.

[0054] Polyethylene fiber rope refers to a rope made of polyethylene material, which has characteristics such as high strength, low elongation, abrasion resistance, and buoyancy. As a preferred embodiment, polyethylene fiber rope can be made of ultra-high molecular weight polyethylene fiber, which has higher strength and lower elongation, and can better meet the needs of the rescue environment.

[0055] The proposed solution utilizes polyethylene fiber rope as the rescue rope 7, effectively addressing the problems of insufficient strength, easy wear, and easy corrosion associated with traditional ropes. Due to the high strength and low elongation of polyethylene fiber rope, it is less prone to breakage or deformation during launch, ensuring the reliability of the rescue operation. Furthermore, polyethylene fiber rope possesses excellent wear and corrosion resistance, enabling long-term use in various harsh environments and extending the service life of the rope-launching projectile.

[0056] As a preferred embodiment, the rescue rope 7 is made of 16 strands of high-strength polyethylene fiber, which is woven from multiple high-strength fibers, with a 16-strand core, a tensile strength of 218 kg, and a wire diameter of φ2 mm.

[0057] As one possible implementation, the electromagnetic launch acceleration distance of the rescue electromagnetic rope-throwing projectile of this utility model is less than 60mm, and the speed is about 65m / s (the launch speed can also be increased by increasing the launch energy). Setting the electromagnetic launch acceleration distance to 60mm and the speed to 65m / s, then: ; ; ; ; In the above formula, s represents the distance traveled in meters, and v represents the speed in meters per second. The acceleration is expressed in meters per second², g is the acceleration due to gravity, with a standard value of approximately 9.80665 meters per second², and t is time in seconds; the above acceleration... It is the average acceleration. Since the electromagnetic force is a semi-sine wave, we have: ; Then we have: ; in: π represents peak acceleration, and π represents pi.

[0058] As a preferred implementation, all parts of the rope-launched projectile must conform to aerodynamic principles, that is, overcome the effects of air resistance and air disturbances, maintain good stability, safety, and reliability, and strive for optimal flight attitude and speed. Good flight stability of the rope-launched projectile means that, while flying in the air, it can adjust its flight attitude in real time using its own external structure to avoid uncontrollable tumbling, oscillation, or swaying. For example... Figure 5 As shown, the static stability margin of the rope-launched projectile is designed accordingly. , In the formula, Let be the axial coordinate of the position of the spring compression center of the rope. Let be the axial coordinate of the center of gravity of the projectile, and D be the maximum diameter of the projectile. If the center of gravity is ahead of the center of pressure, then... The flight process is stable if the center of pressure is ahead of the center of gravity. The flight process is unstable. The larger the diameter, the higher the stability of the rope-throwing projectile.

[0059] For example, the rope-throwing projectile weighs 1.513 kg, has a center of gravity of 409 mm, a pressure center of 447 mm, and a static stability margin of 4.43%. Therefore, it can fly stably with a good flight attitude during the launch phase and the initial part of its flight trajectory. During flight, the rope is gradually released from the inner cavity, and is almost completely released at the end of the flight trajectory. The projectile casing weighs 1.170 kg, has a center of gravity of 443 mm, a pressure center of 447 mm, and a static stability margin of 0.554%. Therefore, it can fly stably in the latter part of its flight trajectory and can automatically adjust its flight attitude in the air without swaying, rolling, or other adverse states. (It can still maintain a good attitude even when encountering adverse environmental factors such as crosswinds).

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification only illustrate the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic rope-throwing projectile for rescue, comprising a power component, characterized in that, The power unit is made of a material that can be driven by an electromagnetic field, and the power unit is provided with a variable diameter channel for the rescue rope (7) to pass through; it also includes: A storage component is installed at one end of the power component and is used to store the rescue rope (7). The storage component is fixedly connected to one end of the rescue rope (7). The storage component is in communication with the diameter-changing channel. The other end of the rescue rope (7) passes through the diameter-changing channel and extends outward.

2. The electromagnetic rope-throwing projectile for rescue according to claim 1, characterized in that, The power component includes: The round tube (4) is made of aluminum alloy. A tapered tube (3) is fixedly installed at one end of a round tube (4) and integrally formed with the round tube (4). The other end of the tapered tube (3) is fixedly connected to a storage component. The variable diameter channel is composed of the hollow parts of the conical tube (3) and the circular tube (4). During the launch flight, the rescue rope (7) is accelerated by the conical surface with a reduced inner diameter between the conical tube (3) and the circular tube (4) so ​​as to realize the gradual release of the rescue rope (7).

3. The electromagnetic rope-throwing projectile for rescue according to claim 2, characterized in that, It also includes a tail fin fixed to the surface of the circular tube (4), the tail fin comprising: The central tube (5) is fitted onto the surface of the circular tube (4); Multiple blades (6) are arranged in a circular array on the surface of the central tube (5).

4. The electromagnetic rope-throwing projectile for rescue according to claim 3, characterized in that, The length of the wing (6) is longer than the length of the central tube (5) to avoid the fixed end plate of the transmitter coil.

5. The electromagnetic rope-throwing projectile for rescue according to claim 3, characterized in that, The front part of the wing (6) is set as a conical surface and the rear part is set as a flat end surface. The root of the wing (6) and the center tube (5) are set with an arc for transition.

6. The electromagnetic rope-throwing projectile for rescue according to claim 2, characterized in that, The storage component includes: An aluminum tube (2) is used to store the prepared rescue rope (7). One end of the aluminum tube (2) is fixedly connected to the cone tube (3), and the other end of the aluminum tube (2) is provided with a flow guide component.

7. The electromagnetic rope-throwing projectile for rescue according to claim 6, characterized in that, The flow guiding component includes: The fairing (1) is installed at the end of the aluminum tube (2) away from the cone tube (3) and is used to guide air during flight. The end of the fairing (1) away from the aluminum tube (2) is arc-shaped.

8. The electromagnetic rope-throwing projectile for rescue according to claim 7, characterized in that, Also includes: The first boss (8) is installed at one end of the flow guide (1). The first boss (8) is located inside the aluminum tube (2) and is threaded to the inner wall of the aluminum tube (2).

9. A rescue electromagnetic rope-throwing projectile according to claim 6, characterized in that, Also includes: The second boss (9) is installed at one end of the tapered tube (3). The second boss (9) is located inside the aluminum tube (2) and is threaded to the inner wall of the aluminum tube (2).

10. The electromagnetic rope-throwing projectile for rescue according to claim 1, characterized in that, The rescue rope (7) is a polyethylene fiber rope.

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