Method and device for stopping an external load of a helicopter

Abstract

The application provides a method and device for stopping an external hanging of a helicopter, which comprises a shell, a central tilting assembly, a swing trigger assembly, a high-pressure gas cylinder, a rotation control assembly; wherein the shell is composed of a cylinder, a central tilting assembly fixing ring, a swing stopping jet pipe, an annular air cavity, an air inlet one-way valve, a high-pressure gas cylinder cavity, a stopping fork rotation table, a stopping fork rotation cavity, a gas conveying one-way valve, a swing stopping jet port and an external connection table; the central tilting assembly is composed of a top column, an upper spherical cavity, an upper spherical cone, a flange ring, a lower spherical cavity, a lower spherical cone, a collision ring and a counterweight cake; the swing trigger assembly is composed of a swing stopping hanging ring, a swing stopping hinge, a swing stopping fork hanging column, a swing stopping fork air inlet hose, a swing stopping fork jet hose, a swing stopping fork and a swing stopping switch assembly; and the rotation control assembly is composed of a stopping fork, a stopping collision table, a spring, a stopping air inlet pipe, a stopping switch assembly, a stopping jet pipe, a stopping jet channel and a stopping jet port.

Description

Technical Field

[0001] This application belongs to the field of aviation technology, specifically relating to a method and device for stopping external suspension on a helicopter. Background Technology

[0002] Helicopters can externally mount various types of machinery and equipment, water tanks, flags, slogans, and even personnel rescue frames. They can even sling together more than a dozen soldiers for emergency and rapid transfer.

[0003] When a helicopter is externally slinging, it inevitably sways left and right, forward and backward, due to changes in its attitude and speed. This causes significant shaking of various machinery and equipment, posing a great challenge to the mooring system and creating a large external force on the helicopter, affecting its control and even causing danger. When slinging water tanks for firefighting, significant shaking will affect the accuracy of firefighting. When slinging flags and slogans, significant shaking will seriously affect their aesthetics and solemnity. When slinging personnel rescue frames, significant shaking will affect the physical condition of the rescued personnel, especially the wounded, and may even cause secondary injuries. When slinging a dozen soldiers together for emergency rapid transfer, significant shaking will affect the soldiers' combat effectiveness.

[0004] Currently, the main methods to address the swaying of external pylons on helicopters are to position the external pylons at the helicopter's center of gravity and to strengthen pilot anti-sway training to avoid rough maneuvers. The problem is not addressed at the equipment level. Summary of the Invention

[0005] Purpose of the invention: To provide a method and device for stopping the external suspension of a helicopter. Utilizing a sensitive internal structure based on the principles of gravity, rotation, pendulum, and inertia, and employing a contact-triggered jet propulsion method, the energy and amplitude of the swaying and rotation are continuously counteracted during the swing. This achieves the effects of stopping the sway and rotation using only a simple mechanical structure, without the need for gyroscopes or electrical equipment.

[0006] In a first aspect, this application provides a device for stopping the external suspension of a helicopter, the device comprising a housing, a central tilting assembly, a swing triggering assembly, a high-pressure gas cylinder, and a rotation control assembly;

[0007] The shell consists of a cylindrical body, a central tilting assembly fixing ring, an anti-sway jet pipe, an annular air chamber, an air inlet check valve, a high-pressure gas cylinder chamber, an anti-sway fork rotating platform, an anti-sway fork rotating chamber, an air delivery check valve, an anti-sway jet port, and an external connecting platform.

[0008] The central tilting assembly consists of a top column, an upper spherical cavity, an upper spherical cone, a flange ring, a lower spherical cavity, a lower spherical cone, a collision ring, and a counterweight.

[0009] The swing trigger assembly consists of an anti-swing ring, an anti-swing hinge, an anti-swing fork hanger, an anti-swing fork air intake hose, an anti-swing fork jet hose, an anti-swing fork, and an anti-swing switch assembly.

[0010] The rotation control assembly consists of an anti-rotation fork, an anti-rotation collision platform, a spring, an anti-rotation air inlet pipe, an anti-rotation switch assembly, an anti-rotation jet pipe, an anti-rotation jet passage, and an anti-rotation jet outlet.

[0011] Preferably, the housing is a fully enclosed cylindrical structure that serves to provide the mounting and force application positions for the central tilting assembly, the swing trigger assembly, the high-pressure gas cylinder, and the rotation control assembly.

[0012] Preferably, the main body of the shell is a cylindrical body, and an external connection platform is set on the top of the cylindrical body to connect the entire device with the outside; an annular air chamber is set in the middle of the side wall of the shell, and several high-pressure gas cylinder chambers are set in the middle of the side wall of the shell.

[0013] Preferably, the annular gas chamber and the high-pressure gas cylinder chamber are connected by an inlet check valve. The high-pressure gas cylinder chamber is responsible for installing the high-pressure gas cylinder, and the annular gas chamber is responsible for temporarily storing the high-pressure gas. The high-pressure gas in the high-pressure gas cylinder chamber enters the annular gas chamber unidirectionally through the inlet check valve; the high-pressure gas in the annular gas chamber is output unidirectionally through the outlet check valve.

[0014] Preferably, eight anti-sway jet nozzles are evenly arranged on the upper part of the side wall of the shell in the directions of 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°.

[0015] Preferably, the central tilting component is the device's swing sensing and response component, with the top part being a top column. The lower end of the top column is fixed directly above the upper spherical cavity, and the upper end of the top column is responsible for fixing it to the housing.

[0016] Preferably, the core component of the swing trigger assembly is the anti-swing fork. The anti-swing fork is hinged to the anti-swing hanging ring via the anti-swing fork hanger at its upper part. The two lower arms of the anti-swing fork are the inner arm and the outer arm, respectively. The anti-swing switch assembly is arranged inside the inner arm of the anti-swing fork. The anti-swing fork air inlet hose and the anti-swing fork jet hose are arranged at the upper part of the inner arm of the anti-swing fork. When the anti-swing switch assembly is triggered, high-pressure gas enters the anti-swing fork jet hose from the annular gas chamber through the gas delivery check valve, the anti-swing fork air inlet hose, and the anti-swing switch assembly, and then exits from the anti-swing fork jet hose through the anti-swing jet pipe and out of the anti-swing jet nozzle, completing the jetting in one direction.

[0017] Secondly, this application also provides a method for stopping externally mounted components on a helicopter, the method comprising:

[0018] First, fix the cylinder of the device to the lowest end of the external sling of the helicopter, keeping the cylinder vertical and the device horizontal;

[0019] Based on the principles of gravity and pendulum, a sensitive internal structure is used to trigger the jet of air by touch, thereby continuously counteracting the energy and amplitude of the swing during the swing.

[0020] This application has the following technical effects:

[0021] (1) The present invention uses a sensitive internal structure based on gravity and pendulum principle, and adopts a touch-triggered jet method to continuously counteract the energy and amplitude of the swing during the swing, thereby achieving the effect of stopping the swing.

[0022] (2) The present invention uses a sensitive internal structure based on the principles of rotation and inertia, and adopts a method of triggering reverse jetting by touch, so as to continuously counteract the energy and amplitude of rotation during rotation and achieve the effect of stopping rotation.

[0023] (3) The invention is ingeniously conceived and its operating logic conforms to scientific principles. It uses only a simple mechanical structure and does not require a gyroscope or electrical equipment to achieve the effect of automatic anti-sway and anti-rotation. It has high stability and good economic value. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external structure of the device provided in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the device provided in the embodiments of this application;

[0026] Figure 3 This is a schematic diagram of the shell structure provided in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the central tilting component structure provided in an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the swing trigger component structure provided in an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the rotation control component structure provided in an embodiment of this application. Detailed Implementation

[0030] Please see Figures 1-6 This invention provides a method and device for stopping external slings on a helicopter. The system mainly consists of: a housing 100, a central tilting assembly 200, a swing triggering assembly 300, a high-pressure gas cylinder 400, and a rotation control assembly 500.

[0031] The shell 100 consists of a cylinder 101, a central tilting assembly fixing ring 102, an anti-sway jet pipe 103, an annular air chamber 104, an air inlet check valve 105, a high-pressure gas cylinder chamber 106, an anti-sway fork rotating platform 107, an anti-sway fork rotating chamber 108, an air delivery check valve 109, an anti-sway jet port 110, and an external connecting platform 111.

[0032] The central tilting assembly 200 consists of a top column 201, an upper spherical cavity 202, an upper spherical cone 203, a flange ring 204, a lower spherical cavity 205, a lower spherical cone 206, a collision ring 207, and a counterweight 208.

[0033] The swing trigger assembly 300 consists of an anti-swing ring 301, an anti-swing hinge 302, an anti-swing fork hanger 303, an anti-swing fork air inlet hose 304, an anti-swing fork jet hose 305, an anti-swing fork 306, and an anti-swing switch assembly 307.

[0034] The rotation control assembly 500 consists of an anti-rotation fork 501, an anti-rotation collision platform 502, a spring 503, an anti-rotation air inlet pipe 504, an anti-rotation switch assembly 505, an anti-rotation jet pipe 506, an anti-rotation jet passage 507, and an anti-rotation jet outlet 508.

[0035] ①System device composition and main functions:

[0036] (1) The housing 100 is a fully enclosed cylindrical structure, serving to provide the installation and force application positions for the central tilting assembly-200, the swing trigger assembly-300, the high-pressure gas cylinder-400, and the rotation control assembly-500. The main body of the housing 100 is a cylindrical body 101, with an external connecting platform 111 located directly above the cylindrical body 101, responsible for connecting the entire device to the outside. An annular gas chamber 104 is located in the middle of the side wall of the housing 100, and several high-pressure gas cylinder chambers 106 are located in the middle of the side wall of the housing 100. The annular gas chamber 104 and the high-pressure gas cylinder chambers 106 are connected through an inlet one-way valve 105. The high-pressure gas cylinder chambers 106 are responsible for installing the high-pressure gas cylinder-400, while the annular gas chamber 104 is responsible for temporarily storing high-pressure gas. The high-pressure gas in the high-pressure gas cylinder chambers 106 enters the annular gas chamber 104 unidirectionally through the inlet one-way valve 105. The high-pressure gas in the annular gas chamber 104 is output unidirectionally through the outlet one-way valve 109.

[0037] (2) Eight anti-sway nozzles 110 are evenly arranged on the upper part of the side wall of the housing 100 in the directions of 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°. The anti-sway nozzles 110 are of Laval nozzle configuration and are connected to the anti-sway nozzle pipe 103. A central tilting assembly fixing ring 102 is provided in the upper part of the inner cavity of the housing 100, which is responsible for connecting and fixing the central tilting assembly 200 to the housing 100. The lower platform of the housing 100 is milled to form an anti-sway fork rotation cavity 108, and an anti-sway fork rotation table 107 is provided in the center position, which is responsible for providing the movable position and hinged installation of the anti-sway fork 501.

[0038] (4) The central tilting assembly 200 is the swing sensing and response assembly of the device. The uppermost part is the top column 201. The lower end of the top column 201 is fixed directly above the upper spherical cavity 202, and the upper end of the top column 201 is responsible for fixing it to the housing 100. The upper spherical cone 203 is a spherical structure with a cylindrical structure below it. The spherical part of the upper spherical cone 203 is placed inside the upper spherical cavity 202. The cylindrical part of the upper spherical cone 203 extends a certain length through the flange ring 204 fixed directly below the upper spherical cavity 202. The cylindrical part of the upper spherical cone 203 can rotate freely inside the flange ring 204.

[0039] (5) The lower end of the cylindrical structure of the upper spherical cone 203 is fixed to the top of the lower spherical cavity 205. The lower spherical cone 206 is similar to the upper spherical cone 203, which is a sphere connected to a cylinder. The spherical structure of the lower spherical cone 206 is placed inside the lower spherical cavity 205. The cylindrical structure of the lower spherical cone 206 extends downward through the circular hole directly below the lower spherical cavity 205. The lower spherical cone 206 and the lower spherical cavity 205 form a movable ball joint. The cylindrical structure of the lower spherical cone 206 can swing and rotate freely in the 25° conical space below the circular hole directly below the lower spherical cavity 205.

[0040] (6) The lower spherical cone 206 cylindrical structure extends downwards to a considerable length and is fixedly connected to the center of the counterweight 208. The counterweight 208 has a large weight, and a collision ring 207 is provided around the edge of the counterweight 208. The collision ring 207 is responsible for triggering the anti-pendulum switch assembly 307 during the swing. The lower spherical cone 206, the counterweight 208, and the collision ring 207 form a pendulum collision structure.

[0041] (7) The purpose of allowing both the upper spherical cone 203 cylindrical structure and the lower spherical cone 206 cylindrical structure to rotate freely around their axes is to ensure that the pendulum collision structure's swing posture is not affected by the overall rotation of the device. When the device swings from the neutral position to a certain direction, the pendulum collision structure can always remain vertically neutral.

[0042] (8) The swing trigger component 300 is triggered by the collision of the pendulum collision structure of the central tilt component 200, specifically the collision of the collision ring 207 with the anti-swing switch component 307.

[0043] (9) The core component of the swing trigger assembly 300 is the anti-swing fork 306. The anti-swing fork 306 is hinged to the anti-swing hanging ring 301 through the anti-swing fork hanging column 303 at its upper part. The two lower arms of the anti-swing fork 306 are the inner arm and the outer arm, respectively. The anti-swing switch assembly 307 is arranged inside the inner arm of the anti-swing fork 306. The anti-swing fork air inlet hose 304 and the anti-swing fork jet hose 305 are arranged on the upper part of the inner arm of the anti-swing fork 306. When the anti-swing switch assembly 307 is triggered, high-pressure gas enters the anti-swing fork jet hose 305 from the annular air chamber 104 through the gas delivery check valve 109, the anti-swing fork air inlet hose 304, and the anti-swing switch assembly 307, and then exits from the anti-swing fork jet hose 305 through the anti-swing jet pipe 103 and the anti-swing jet port 110, completing the jetting in one direction.

[0044] (10) Eight anti-sway forks 306 are evenly arranged in the 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315° directions of the device, which are consistent with the arrangement direction of the anti-sway air nozzle 110. The anti-sway fork 306 is a high-damping hinge with the anti-sway fork hanging column 303 on its upper part and the inner fork of the anti-sway hanging ring 301. After the anti-sway fork 306 swings to any position, it tends to stay at that position without the collision of the subsequent collision ring 207. The purpose is that the anti-sway switch assembly 307 can only be triggered by the collision ring 207 actively hitting it, and the anti-sway switch assembly 307 cannot be triggered by the swing of the anti-sway fork 306 actively hitting the collision ring 207.

[0045] (11) Taking 0° as an example, when the device swings from the neutral position towards 0°, because the pendulum collision structure can always remain vertically neutral, the anti-swing switch assembly 307 in the 0° direction is triggered by the collision ring 207 in the 0° direction to spray air from the anti-swing nozzle 110 in the 0° direction, continuously offsetting the energy and amplitude of its swing. When the device swings to the highest position in the 0° direction, the anti-swing fork 306 in the 180° direction also has the same swing angle. When the device swings from the highest position in the 0° direction to the highest position in the 180° direction, the anti-swing switch assembly 307 in the 0° direction disengages from the collision ring 207, and the anti-swing nozzle 110 in the 0° direction stops spraying air. At the same time, the anti-swing switch assembly 307 in the opposite 180° direction is triggered by the collision ring 207 in the 180° direction to spray air from the anti-swing nozzle 110 in the 180° direction, again continuously offsetting the energy and amplitude of its swing. The same applies when the device swings from the highest position in the 180° direction to the highest position in the 0° direction. The same principle applies to swing angles in directions such as 45°, 90°, 135°, 180°, 225°, 270°, and 315°.

[0046] (12) When the pendulum trigger component 300 rotates with the device, the pendulum collision structure's swing posture is unaffected by the overall rotation of the device. The device's swing angle is no longer fixed with respect to the device itself; instead, it can be referenced to space. The device's intended function remains valid, meaning that regardless of how the device rotates, the anti-swing jet nozzle 110 can always spray air at the appropriate position to continuously counteract the energy and amplitude of the device's swing. When the device's swing angle is any angle from 0° to 360°, it is possible to trigger two adjacent anti-swing jet nozzles 110 simultaneously.

[0047] (13) The rotation control component 500 is arranged at the lower end of the housing 100. The anti-rotation fork 501 has two fan-shaped structures, thick at both ends and thin in the middle. The thinnest part in the middle is connected to the anti-rotation fork rotating table 107 through a hinge. The anti-rotation fork 501 can rotate around the anti-rotation fork rotating table 107 in the anti-rotation fork rotating cavity 108.

[0048] (14) The anti-rotation fork 306 is the rotation sensing and response component of the device. When the device rotates counterclockwise, the anti-rotation fork 501 collides with the anti-rotation collision platform 502 on the right side. The anti-rotation collision platform 502 is connected to the anti-rotation jet pipe 506 and compresses the spring 503 together, sliding to the right along the anti-rotation jet passage 507. At the same time, the anti-rotation switch assembly 505 is opened, so that the high-pressure gas enters the anti-rotation jet passage 507 from the annular gas chamber 104 through the anti-rotation inlet pipe 504, the anti-rotation switch assembly 505, and the anti-rotation jet pipe 506, and finally sprays out from the anti-rotation jet port 508, completing the counterclockwise jet spray and continuously offsetting the energy and amplitude of the device's counterclockwise rotation.

[0049] The same applies when the device rotates clockwise.

[0050] ③System operation process

[0051] (1) Before using the device, first fix the cylinder 101 of the device to the lowest end of the external hanging object of the helicopter, so that the cylinder 101 is vertical and the device is horizontal.

[0052] (2) Taking 0° as an example, when the device swings from the neutral position towards 0°, because the pendulum collision structure can always remain vertically neutral, the anti-swing switch assembly 307 in the 0° direction is triggered by the collision ring 207 in the 0° direction to spray air from the anti-swing nozzle 110 in the 0° direction, continuously offsetting the energy and amplitude of its swing. When the device swings to the highest position in the 0° direction, the anti-swing fork 306 in the 180° direction also has the same swing angle. When the device swings from the highest position in the 0° direction to the highest position in the 180° direction, the anti-swing switch assembly 307 in the 0° direction disengages from the collision ring 207, and the anti-swing nozzle 110 in the 0° direction stops spraying air. At the same time, the anti-swing switch assembly 307 in the opposite 180° direction is triggered by the collision ring 207 in the 180° direction to spray air from the anti-swing nozzle 110 in the 180° direction, again continuously offsetting the energy and amplitude of its swing.

[0053] (3) The same applies when the device swings from the highest position in the 180° direction to the highest position in the 0° direction. (4) The same applies to the swing angles in the directions of 45°, 90°, 135°, 180°, 225°, 270°, 315°, etc.

[0054] (5) When the swing trigger component 300 rotates with the device, the swing posture of the pendulum collision structure can be free from the influence of the overall rotation of the device. The swing angle of the device is no longer fixed with the device itself as the reference system. The swing angle of the device can be referenced with space. The device's established function is still applicable. That is, no matter how the device rotates, the anti-swing jet nozzle 110 can spray jets at the appropriate position to continuously offset the energy and amplitude of the device's swing.

[0055] (6) When the swing angle of the device is any angle from 0° to 360°, it is possible to trigger two adjacent anti-swing jet nozzles 110 at the same time.

[0056] (7) The anti-rotation fork 306 is the rotation sensing and response component of the device. When the device rotates counterclockwise, the anti-rotation fork 501 collides with the anti-rotation collision platform 502 on the right side. The anti-rotation collision platform 502 is connected to the anti-rotation jet pipe 506 and compresses the spring 503 together, sliding to the right along the anti-rotation jet passage 507. At the same time, the anti-rotation switch assembly 505 is opened, so that the high-pressure gas enters the anti-rotation jet passage 507 from the annular gas chamber 104 through the anti-rotation inlet pipe 504, the anti-rotation switch assembly 505, and the anti-rotation jet pipe 506, and finally sprays out from the anti-rotation jet port 508, completing the counterclockwise jet spray and continuously offsetting the energy and amplitude of the device's counterclockwise rotation.

[0057] (8) The same applies when the device rotates clockwise.

[0058] ④ It should be noted that:

[0059] (1) Eight anti-sway jet nozzles 110 are evenly arranged on the upper part of the side wall of the shell 100 in the directions of 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°. The anti-sway jet nozzles 110 are of Laval nozzle configuration.

[0060] (2) The lower spherical cone 206 and the lower spherical cavity 205 form a movable ball joint. The cylindrical structure of the lower spherical cone 206 can swing and rotate freely in the 25° conical space below the circular hole directly below the lower spherical cavity 205.

[0061] (3) The counterweight 208 has a large weight.

[0062] (4) The purpose of allowing both the upper spherical cone 203 cylindrical structure and the lower spherical cone 206 cylindrical structure to rotate freely around their axes is to ensure that the pendulum collision structure's swing posture is not affected by the overall rotation of the device. When the device swings from the neutral position to a certain direction, the pendulum collision structure can always remain vertically neutral.

[0063] (5) Eight anti-sway forks 306 are evenly arranged in the 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315° directions of the device, consistent with the arrangement direction of the anti-sway air nozzles 110. The anti-sway forks 306 are hinged to the inner fork of the anti-sway hanging ring 301 through the anti-sway fork hanging column 303 at the top of the device. This is a high-damping hinge. After the anti-sway fork 306 swings to any position, it tends to stay at that position without subsequent collision with the collision ring 207.

[0064] (6) When the pendulum trigger component 300 rotates with the device, the pendulum collision structure's swing posture is unaffected by the overall rotation of the device. The device's swing angle is no longer fixed with respect to the device itself; instead, it can be referenced to space. The device's intended function remains valid, meaning that regardless of how the device rotates, the anti-swing jet nozzle 110 can always spray air at the appropriate position, continuously counteracting the energy and amplitude of the device's swing. When the device's swing angle is any angle from 0° to 360°, it is possible to trigger two adjacent anti-swing jet nozzles 110 simultaneously.

Claims

1. A device for stopping the movement of an externally mounted helicopter, characterized in that, The device includes a housing, a central tilting assembly, a swing triggering assembly, a high-pressure gas cylinder, and a rotation control assembly; The shell consists of a cylindrical body, a central tilting assembly fixing ring, an anti-sway jet pipe, an annular air chamber, an air inlet check valve, a high-pressure gas cylinder chamber, an anti-sway fork rotating platform, an anti-sway fork rotating chamber, an air delivery check valve, an anti-sway jet port, and an external connecting platform. The central tilting assembly consists of a top column, an upper spherical cavity, an upper spherical cone, a flange ring, a lower spherical cavity, a lower spherical cone, a collision ring, and a counterweight. The swing trigger assembly consists of an anti-swing ring, an anti-swing hinge, an anti-swing fork hanger, an anti-swing fork air intake hose, an anti-swing fork jet hose, an anti-swing fork, and an anti-swing switch assembly. The rotation control assembly consists of an anti-rotation fork, an anti-rotation collision platform, a spring, an anti-rotation air intake pipe, an anti-rotation switch assembly, an anti-rotation jet pipe, an anti-rotation jet passage, and an anti-rotation jet port. The housing is a fully enclosed cylindrical structure that serves to provide the mounting and force application positions for the central tilting assembly, the swing trigger assembly, the high-pressure gas cylinder, and the rotation control assembly. The main body of the shell is a cylinder, and an external connection platform is set on the top of the cylinder to connect the entire device to the outside. An annular gas chamber is set in the middle of the side wall of the shell, and several high-pressure gas cylinder chambers are set in the middle of the side wall of the shell. The annular gas chamber and the high-pressure gas cylinder chamber are connected by an inlet check valve. The high-pressure gas cylinder chamber is responsible for installing the high-pressure gas cylinder, while the annular gas chamber is responsible for temporarily storing high-pressure gas. The high-pressure gas in the high-pressure gas cylinder chamber enters the annular gas chamber in one direction through the inlet check valve, and the high-pressure gas in the annular gas chamber is output in one direction through the outlet check valve.

2. The apparatus according to claim 1, characterized in that, Eight anti-sway jet nozzles are evenly arranged on the upper part of the side wall of the shell in the directions of 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315°.

3. The apparatus according to claim 2, characterized in that, The central tilting assembly is the device's swing sensing and response assembly. The top part is the top column, the lower end of which is fixed directly above the upper spherical cavity, and the upper end of which is responsible for fixing it to the housing.

4. The apparatus according to claim 3, characterized in that, The core component of the swing trigger assembly is the anti-swing fork. The anti-swing fork is hinged to the anti-swing ring via the anti-swing fork hanger at its upper part. The two lower arms of the anti-swing fork are the inner arm and the outer arm, respectively. The anti-swing switch assembly is arranged inside the inner arm of the anti-swing fork. The anti-swing fork air inlet hose and the anti-swing fork jet hose are arranged at the upper part of the inner arm of the anti-swing fork. When the anti-swing switch assembly is triggered, high-pressure gas enters the anti-swing fork jet hose from the annular gas chamber through the gas delivery check valve, the anti-swing fork air inlet hose, and the anti-swing switch assembly. Then, it is ejected from the anti-swing fork jet hose through the anti-swing jet pipe and out of the anti-swing jet nozzle, completing the jetting in one direction.

5. A method for stopping external suspension on a helicopter, characterized in that, The method is applied to the apparatus as described in any one of claims 1-4, and the method comprises: First, fix the cylinder of the device to the lowest end of the external sling of the helicopter, keeping the cylinder vertical and the device horizontal; Based on the principles of gravity and pendulum, a sensitive internal structure is used to trigger the jet of air by touch, thereby continuously counteracting the energy and amplitude of the swing during the swing.

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