Wind wing device for fixed-height parachute opening of aviation sonar buoy
By designing a wind wing device that opens the parachute at a fixed height, the problem of low accuracy in the delivery of aviation sonar buoys under high-altitude and high-speed flight conditions has been solved, the precise delivery of the buoys has been achieved, and the anti-submarine aircraft's high-altitude and high-speed flight capabilities have been enhanced.
Patent Information
- Application Number
- CN202310905478.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-24
- Publication Date
- 2025-01-24
AI Technical Summary
The existing aerial sonar buoys are difficult to accurately deploy under high-altitude and high-speed flight conditions. The traditional parachute is left for a long time when it is dropped at high altitude, and the influence of wind is difficult to control, resulting in low delivery accuracy.
Design a wind wing device that opens the parachute at a fixed height, including a wind wing, a foldable tail wing and a height control component. The height control component detects the airborne altitude and controls the parachute opening time of the wind wing device to achieve precise placement of the buoy.
By installing a wind wing device that opens the parachute at a fixed height, the airdrop process of the buoy is divided into two stages. The first stage maintains the ballistic trajectory and descends at mid-to-high altitude, while the latter stage decelerates and descends at low altitude. This enables the anti-submarine aircraft to accurately fly under high-altitude and high-speed flight conditions. The ability to deploy buoys.
Smart Images
Figure CN119348824A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of aviation sonar buoys, and mainly relates to a method for realizing the parachute opening of aviation sonar buoys at a fixed altitude, and can be applied to control the placement accuracy of aviation sonar buoys by anti-submarine aircraft under high-altitude and high-speed flight conditions. Background Art
[0002] Aerial sonar buoys are consumable remote sensing sonar equipment used to detect submarines or underwater targets. They are deployed in large numbers by aviation anti-submarine aircraft in a certain sea area according to certain spacing and formations. Sonar buoys are generally ejected from the launch tube by high-pressure gas. The attached wind wing is separated from the main body by the spring, and the parachute is pulled out and the parachute is opened, so that the descent speed of the sonar buoy will be reduced to 30-40m / s, and the speed is kept stable until it splashes into the water. After the sonar buoy enters the water, its internal battery is powered to inflate the airbag, and the airbag expands to detach the parachute, driving the electronic compartment to the surface. The underwater sonar automatically descends to a certain depth to start collecting underwater sound signals, and transmits the sonar signals to the radio transmitter of the surface electronic compartment through cables for modulation and transmission. The anti-submarine aircraft then uses a radio receiver for demodulation, and completes the detection function after signal processing.
[0003] The traditional sonar buoy drop height is 50 to 3000 meters. To ensure the accurate landing point, anti-submarine aircraft often have to lower the drop height to below 1500 meters. However, low-altitude drop is not only inefficient, but also causes the aircraft to fly at a lower speed, making it vulnerable to anti-detection, evasion, and even submarine-launched missile attacks by submarines. There are also problems such as small radar and photoelectric detection field of view, body fatigue, poor fuel economy, and poor crew riding. For high-altitude drop above 4500 meters, the conventional sonar buoy parachute method cannot guarantee the drop accuracy due to the long airborne time and the difficulty in controlling the wind. Summary of the invention
[0004] The purpose of the present invention is to improve the parachute drop method based on the existing buoy technology, so as to control the wind wing device of the parachute at a certain height, replace the original wind wing of the aviation sonar buoy, and realize the precise placement of the aviation sonar buoy under high-altitude and high-speed flight conditions. The present invention has a simple structure, small size, light weight, low cost and is easy to implement.
[0005] The objective of the present invention is achieved through the following technical solutions:
[0006] 1. A wind wing device for opening a parachute for determining the height of an aviation sonar buoy, comprising:
[0007] The wind wing (2) is approximately a disc, one side of which can be connected to the torsion spring pin shaft of the parachute compartment at the top of the buoy (1) through a hanging ear, and the other side can be locked in the lock pin hole of the parachute compartment by a controllable telescopic lock pin (6), so that the parachute bag can be closed in the parachute compartment;
[0008] A foldable tail wing (3), wherein the foldable tail wing (3) has four pairs, which are mounted on the upper surface of the wind wing (2), and are perpendicular to the upper surface of the wind wing (2) when unfolded, and are arranged in a cross shape with the center of the wind wing (2); after being folded, they can be placed in the cylindrical space above the wind wing (2), with each pair occupying about one quarter, and the radial space size does not exceed the diameter of the buoy (1), and the height does not affect the loading of the wind wing device into the buoy delivery tube (7) along with the buoy (1);
[0009] A height control component (4), the height control component (4) comprising a self-resetting switch (5) and a controllable telescopic locking pin (6), installed on the lower surface of the wind blade (2), and adopting a flat structure design to minimize the installation space;
[0010] A self-resetting switch (5), wherein the self-resetting switch (5) controls the power supply in the height control component (4) to be turned on or off;
[0011] A controllable telescopic lock pin (6) is provided with a spring, which naturally extends when not under control, and can be inserted into a lock pin hole of the parachute compartment of the buoy (1), so as to install the wind wing device on the top of the parachute compartment of the buoy (1). The controllable telescopic lock pin (6) can be manually moved to unlock or re-lock the wind wing device.
[0012] In order to assemble the wind wing device on the buoy (1) and load it into the buoy delivery tube (7), the buoy delivery tube end cover (8) and four shear pins (9) are also needed. The buoy delivery tube (7), the end cover (8) and the shear pins (9) are all conventional accessories of the sonar buoy.
[0013] 2. Preferably, the wind wing (2) is formed by stamping and bending a thin metal plate, or is formed in one step using a non-metallic material.
[0014] 3. Preferably, the foldable tail wing (3) is composed of two or more thin plates, which are connected by a hinge structure. With the center of the wind wing (2) as the center of the circle, one pair of thin plates is installed on the surface of the wind wing (2) every 90° along the radial direction through the hinge structure. The foldable tail wing (3) can be folded within a range of no more than one-fourth of the circular cross-section of the buoy (1) on the surface of the wind wing (2) without interfering with each other, so that each thin plate of the foldable tail wing (3) is basically parallel to the surface of the wind wing (2); torsion springs are installed at all hinge structures, and a limiting structure is designed. After removing the external force constraint, the four pairs of foldable tail wings (3) are unfolded under the action of the torsion springs to form a cross tail wing that is basically perpendicular to the surface of the wind wing (2). The foldable tail wing (3) is processed by thin metal plates or formed in one step by non-metallic materials.
[0015] 4. Preferably, the self-resetting switch (5) is installed under the wind wing (2) together with the height control component (4), and its button or stroke moving component can pass through the reserved hole of the wind wing (2) and be exposed from the upper surface of the wind wing (2); when no external force acts on the button or the stroke moving component, the self-resetting switch (5) is in the on state; when the button or the stroke moving component is pressed close to the upper surface of the wind wing (2), the self-resetting switch (5) is in the off state.
[0016] 5. Preferably, the height control component (4) contains a battery, a circuit board, an actuator, etc., and the battery is turned on and off by a self-resetting switch (5); when the power is off, the circuit board and the actuator do not work, and the controllable telescopic lock pin (6) is not controlled and extends naturally; after power is supplied, the circuit board collects physical quantities such as atmospheric pressure or speed, acceleration, etc. through sensors, calculates or converts the airborne height, and determines whether to drive the actuator according to the set parameters and unlocking conditions, thereby driving the controllable telescopic lock pin (6) to retract.
[0017] The beneficial effects of the present invention are as follows: by adding a wind wing device that opens a parachute at a fixed altitude, the airborne process of the buoy is divided into two stages, the former being a descent that maintains a ballistic trajectory at a medium-high altitude, and the latter being a descent after deceleration at a low altitude, so that the anti-submarine aircraft can have the ability to accurately deploy buoys under high-altitude and high-speed flight conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 Side view of the wind wing device
[0020] Figure 2Schematic diagram of the wind wing device being loaded into the launch tube along with the sonar buoy
[0021] Figure 3 The wind wing device is deployed on the top of the sonar buoy
[0022] The reference numerals include:
[0023] 1-buoy, 2-wind wing, 3-foldable tail wing, 4-altitude control component, 5-self-reset switch, 6-controllable telescopic locking pin, 7-buoy launching tube, 8-end cover, 9-shear pin. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] The purpose of the present invention is to improve the parachute drop method based on the existing buoy technology, so as to control the parachute opening wind wing device at a certain height to replace the original wind wing of the aviation sonar buoy, so as to realize the precise delivery of the aviation sonar buoy under high-altitude and high-speed flight conditions.
[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0027] like Figures 1 to 3 As shown, this embodiment provides a wind wing device for opening a parachute at a fixed altitude by an aviation sonar buoy:
[0028] 1. A wind wing (2), a foldable tail wing (3) mounted on the wind wing (2) and a height control assembly (4), a self-resetting switch (5) and a controllable retractable locking pin (6) contained in the height control assembly (4), such as Figure 1 As shown;
[0029] 2. In this embodiment, the wind wing (2) is formed by stamping and bending a thin metal plate, and is approximately a disc with a hanging ear on one side. Its shape design allows it to fit the top structure of the parachute compartment of the buoy (1) and the torsion spring and torsion spring pin for assembly, and a hinge structure, a stop block and a plurality of holes are stamped and bent;
[0030] 3. In this embodiment, the foldable tail wing (3) is made of thin metal plates, which are approximately composed of a thin plate in the shape of an isosceles triangle and a right-angled trapezoid. The waist of the isosceles triangle and the lower base of the right-angled trapezoid are equal in length and are smaller than the radius of the circular cross-section of the buoy (1). The base of the isosceles triangle and the oblique waist of the right-angled trapezoid are equal in length, and the upper base and the straight waist of the right-angled trapezoid are equal in length. The vertex angle of the isosceles triangle is 45°, and the two base angles are both 67.5°. The oblique waist of the right-angled trapezoid is at an angle of 112.5° to the upper base, and at an angle of 67.5° to the lower base.
[0031] The base of the isosceles triangle and the oblique waist of the right-angled trapezoid are connected by a hinge structure. Through the limit design and the installation of torsion springs, the two thin plates are basically in the same plane when unfolded, forming a larger right-angled trapezoid shape; the two thin plates can be folded along the hinge in a certain rotation direction so that the angle between their two surfaces is close to 0°.
[0032] 4. In this embodiment, with the center of the wind wing (2) as the center of the circle, a pair of foldable tail wings (3) are installed on the surface of the wind wing (2) every 90° along the radial direction through a hinge structure. When the foldable tail wing (3) is unfolded, the larger right-angled trapezoidal waist is connected to the wind wing (2) through a hinge structure. Through a limiting structure and an installed torsion spring, the angle between the foldable tail wing (3) and the surface of the wind wing (2) when unfolded is close to 90°; the foldable tail wing (3) can be folded along the hinge in a certain rotation direction so that the angle between it and the surface of the wind wing (2) is close to 0°, and then the right-angled trapezoidal surface of the foldable tail wing (3) is folded so that the angles between the two surfaces of the foldable tail wing (3) and the surface of the wind wing (2) are close to 0°.
[0033] 5. In this embodiment, the self-resetting switch (5) adopts a normally closed self-resetting button switch, which is installed under the wind wing (2) along with the height control component (4). The button can pass through the reserved hole of the wind wing (2) and be exposed from the upper surface of the wind wing (2). When no external force acts on the button, the self-resetting switch (5) is in the on state; when the button is pressed close to the upper surface of the wind wing (2), the self-resetting switch (5) is in the off state.
[0034] 6. In this embodiment, the height control component (4) contains a battery, a circuit board, an actuator, etc., and the battery is turned on and off by a self-resetting switch (5); when the power is off, the circuit board and the actuator do not work, and the controllable telescopic lock pin (6) is not controlled and naturally extends; after power is supplied, the processor in the circuit board detects the altitude through the air pressure altitude sensor, and determines whether to drive the actuator according to the set parameters and unlocking conditions, thereby driving the controllable telescopic lock pin (6) to retract.
[0035] 7. In this embodiment, after the wind wing device is assembled on the top of the parachute compartment of the buoy (1), the four foldable tail wings (3) are folded and pressed to the surface of the wind wing (2) by the end cover (8) of the buoy delivery tube. Then, the buoy in this state is loaded into the buoy delivery tube (7), and the end cover (8) is locked with the shear pin (9). During the assembly process, the self-resetting switch (5) cuts off the power supply in the height control component (4), and the controllable telescopic locking pin (6) extends, so that the wind wing device overcomes the elastic force of the torsion spring and is locked on the top of the parachute compartment of the buoy (1). The assembly process is as follows: Figure 2 shown.
[0036] 8. In this embodiment, when the buoy is dropped from a high altitude, the buoy (1) loaded in the buoy dropping tube (7) is driven by high pressure gas, breaking the shear pin (9) locking the end cover (8), and flies out of the cabin. The end cover (8) is separated from the buoy (1), and the foldable tail (3) is unfolded into a cross tail along the axis direction of the buoy (1) under the action of the torsion spring. Figure 3 Then the buoy (1) adjusts its attitude and descends along the ballistic trajectory.
[0037] 9. In this embodiment, when the foldable tail wing (3) is deployed at high altitude, the self-reset switch (5) is connected to the power supply in the altitude control component (4), and the altitude control component (4) detects and calculates the airborne altitude. When the altitude drops to a predetermined altitude, the altitude control component (4) drives the controllable telescopic lock pin (6) to retract, unlocking the wind wing device from the top of the parachute compartment of the buoy (1). The wind wing device flips and pops out under the action of the torsion spring, and the parachute bag is pulled out. The buoy (1) slows down and drops, and splashes into the sea after the speed stabilizes.
[0038] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the present invention and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A wind wing device for opening a parachute at a fixed altitude for an aviation sonar buoy, characterized in that: It comprises a wind wing (2), a foldable tail wing (3) mounted on the wind wing (2) and a height control component (4), a self-resetting switch (5) and a controllable telescopic locking pin (6) contained in the height control component (4); After the wind wing device is assembled on the top of the parachute compartment of the buoy (1), the foldable tail wing (3) is folded and pressed by the end cover (8) of the buoy delivery tube, and then the buoy in this state is loaded into the buoy delivery tube (7), and the end cover (8) is locked with the shear pin (9). During the assembly process, the self-resetting switch (5) cuts off the power supply in the height control component (4), and the controllable telescopic locking pin (6) extends, so that the wind wing device overcomes the elastic force of the torsion spring and is locked on the top of the parachute compartment of the buoy (1); When dropping from a high altitude, the buoy (1) loaded in the buoy dropping tube (7) is driven by high-pressure gas, breaking the shear pin (9) locking the end cover (8), and flies out of the cabin. The end cover (8) is separated from the buoy (1), and the foldable tail wing (3) is unfolded into a cross tail wing along the axis direction of the buoy (1) under the action of the torsion spring, and the buoy (1) adjusts its posture and descends along the ballistic trajectory; At the same time, the self-resetting switch (5) is connected to the power supply in the altitude control component (4), and the altitude control component (4) starts to detect and calculate the airborne altitude. When descending to a predetermined altitude, the altitude control component (4) drives the controllable telescopic lock pin (6) to retract, unlocking the wind wing device from the top of the parachute compartment of the buoy (1). The wind wing device flips and pops out under the action of the torsion spring, and the parachute bag is pulled out. The buoy (1) decelerates and descends, and splashes into the sea after the speed stabilizes.
2. The wind wing device for deploying a parachute for determining the altitude of an aviation sonar buoy according to claim 1, characterized in that: The foldable tail wing (3) is composed of two or more thin plates, which are connected by a hinge structure. With the center of the wind wing (2) as the center of the circle, one pair of thin plates is installed on the surface of the wind wing (2) every 90 degrees along the radial direction through the hinge structure. The foldable tail wing (3) can be folded within a range of no more than one quarter of the circular cross-section of the buoy (1) on the surface of the wind wing (2) without interfering with each other, so that each thin plate of the foldable tail wing (3) is basically parallel to the surface of the wind wing (2); torsion springs are installed at all hinge structures, and a limiting structure is designed. After removing the external force constraint, the foldable tail wing (3) is unfolded under the action of the torsion spring to form a cross tail wing that is basically perpendicular to the surface of the wind wing (2).
3. The wind wing device for deploying a parachute for determining the altitude of an aviation sonar buoy according to claim 1, characterized in that: The working state of the altitude control component (4) and the self-resetting switch (5) is related to the folding or unfolding state of the foldable tail wing (3) on the surface of the wind wing (2): when the foldable tail wing (3) is folded on the surface of the wind wing (2), the self-resetting switch (5) cuts off the power supply in the altitude control component (4), and the altitude control component (4) does not work; when the foldable tail wing (3) is unfolded from the surface of the wind wing (2), the self-resetting switch (5) connects the power supply in the altitude control component (4), and the altitude control component (4) starts to work.
4. The wind wing device for deploying a parachute for determining the altitude of an aviation sonar buoy according to claim 1, characterized in that: When the altitude control component (4) is not working, the controllable telescopic lock pin (6) is not controlled and freely extends, so that the wind wing device can overcome the elastic force of the torsion spring and be locked on the top of the parachute compartment of the buoy (1); the controllable telescopic lock pin (6) can be manually moved to unlock or re-lock the wind wing device.
5. The wind wing device for deploying a parachute for determining the altitude of an aviation sonar buoy according to claim 1, characterized in that: After the altitude control component (4) starts working, it collects atmospheric pressure or physical quantities such as velocity and acceleration through sensors to calculate or convert the airborne altitude. When the set parameters are reached and the unlocking conditions are met, the controllable telescopic lock pin (6) is driven to retract, unlocking the wind wing device so that it is separated from the buoy (1) under the action of the torsion spring.