PLS parachute opening dynamic load control device and method
By combining the stable umbrella and the closure cloth in the wing parachute system, the sliding speed of the closure cloth is controlled by using the stable umbrella connection belt to extend the inflation time of the umbrella clothing, solving the problem of dynamic load control of the umbrella opening under high-altitude high-speed heavy load conditions, and achieving effective control of the umbrella opening procedure and guaranteeing the safety of the skydiver.
Patent Information
- Application Number
- CN202411963138.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-05-13
AI Technical Summary
Under high-altitude and high-speed heavy load conditions, the prior art is difficult to effectively control the dynamic load of the wing parachute, which causes the parachute jumpers to face the problem of overload.
By combining the stable umbrella and the closing cloth, the stable umbrella is connected to the closing cloth by using the stabilization umbrella connection belt to control the sliding speed of the closing cloth, thereby extending the inflation time of the umbrella clothing, adjusting the opening process of the umbrella, and achieving the purpose of dynamic load control.
Under high-altitude and high-speed heavy load conditions, the parachute opening procedure is effectively controlled, the parachute opening dynamic load is reduced, and the parachute opening safety is protected.
Smart Images
Figure CN119975797A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of application on airborne systems, and specifically, relates to a PLS (Pilot Link Slider) parachute opening dynamic load control device and method. Background Art
[0002] Since the canopy material used for wing parachutes is a zero-air permeability coating material, and the wing parachutes open more quickly than round parachutes, the overload of the opening is much greater than that of round parachutes. The greater the overload value, the more serious the impact and consequences. When it exceeds a certain limit, it will lead to reduced human work ability and physiological dysfunction. In order to reduce the overload of the opening parachute, the current methods are:
[0003] Option 1: Leading edge air inlet control
[0004] The leading edge opening area of the closed wing parachute is utilized by the closing rope part. The leading edge opening is equipped with upper and lower rows of closing rings. The closing rope is a continuous long rope. When the closing rope is tightened, the two rows of closing rings are close to each other, which reduces the opening area, delays inflation, and slows down the expansion of the canopy, thus reducing the dynamic load of the parachute opening.
[0005] Option 2: Canopy bottom edge control
[0006] The closing rope is controlled by the resistance of the stabilizing parachute. The closing rope passes through the closing rings around the lower surface of the parafoil, and finally comes out from the closing ring at the trailing edge, passes through the center of the parafoil to the upper wing surface, and connects with the stabilizing parachute. When the parachute is opened, the resistance of the stabilizing parachute tightens the closing rope, but at the same time, the air entering the bottom edge of the canopy inflates the canopy, resulting in the closing ring having a tendency to expand outward. When the latter force exceeds the resistance of the stabilizing parachute, the canopy gradually opens.
[0007] Option 3: Cloth control
[0008] The closing cloth's downward resistance and the friction between the loops and the parachute ropes are used to delay the parachute opening. The closing cloth is a rectangular piece of sail silk with four metal loops installed at its four corners. When assembling, all the parachute ropes of the wing parafoil are divided into four groups, each passing through a loop. When opening the parachute, the bottom edge of the canopy is inflated to expand the parachute ropes outward, exerting pressure on the four metal loops, causing the closing cloth to slide toward the parachutist. The closing cloth's resistance and the friction between the loops and the parachute ropes control the closing cloth's downward speed.
[0009] The leading edge air inlet control method is convenient for processing, but it can easily lead to uneven inflation of the air chambers when the parachute is opened, and the stress on the canopy is concentrated, resulting in damage to individual air chambers due to over-inflation.
[0010] The structure of the canopy bottom edge control method is relatively simple, but the closing rope and the parachute rope will produce friction during the parachute opening process, which can easily burn the parachute rope.
[0011] The control method of the closing cloth has an independent structure, which reduces unnecessary contact with the canopy lines and avoids interference with the parachute opening program. However, under high altitude, high speed and heavy load conditions, the dynamic load of the canopy opening increases sharply, and the single structure of the closing cloth cannot effectively control the parachute opening program.
[0012] When the maximum parachute opening height, maximum parachute opening speed and maximum parachuting weight increase, it will be difficult to meet the technical index requirements by using any of the above parachute opening overload control technologies. In order to ensure the normal and safe operation of the system, a more effective PLS parachute opening dynamic load control technology must be adopted to reduce the parachute opening dynamic load. Summary of the invention
[0013] The object of the present invention is to provide a PLS parachute opening dynamic load control device and method.
[0014] The technical solution to achieve the purpose of the present invention is: a PLS parachute opening dynamic load control device, the stabilizing parachute is located above the parachute canopy, the closing cloth is located below the parachute canopy, and the parachute rope of the wing parachute passes through the closing cloth. The canopy is provided with a top hole to pass through the stabilizing parachute connecting belt; the stabilizing parachute connecting belt is connected to the stabilizing parachute at the upper end and the closing cloth at the lower end, and the stabilizing parachute and the closing cloth are connected through the stabilizing parachute connecting belt; a circular ring and an "X"-shaped reinforcement belt are provided on the closing cloth, the circular ring is the connection interface of the stabilizing parachute connecting belt, and the "X"-shaped reinforcement belt is used to connect and fix the circular ring. The stabilizing parachute connecting belt is a unique structure of this device and is the only component connecting the stabilizing parachute and the closing cloth.
[0015] Furthermore, the stabilizing parachute comprises a stabilizing parachute canopy, a mesh, a reinforcing belt, an inner parachute rope and a connecting belt; the stabilizing parachute is an inverted cone, the stabilizing parachute canopy is the upper part of the inverted cone, the mesh is the lower part of the inverted cone, and the lower end of the stabilizing parachute canopy and the upper end of the mesh are connected together by sewing and splicing; the reinforcing belt is the force transmission structure of the stabilizing parachute, and is radially attached to the outer surface of the stabilizing parachute, that is, the outer surface after the stabilizing parachute canopy and the mesh are sewn together; the inner parachute rope is the aerodynamic shape support for the stabilizing parachute after the area is changed, the upper end of the inner parachute rope is connected to the stabilizing parachute canopy by sewing, and the lower end is connected to the bottom of the mesh, and the stabilizing parachute after the area is changed is used to assist the closing cloth in controlling the opening process of the wing parachute; the connecting belt is the connecting structure between the stabilizing parachute and the entire parachute system, the upper end of the connecting belt is connected to the bottom of the inverted cone-shaped stabilizing parachute, and the lower end is connected to the parachute system.
[0016] Furthermore, the closing cloth includes a closing cloth main cloth, a fluffy ring body, a circular ring and a reinforcing belt; the closing cloth main cloth is the main structure of the closing cloth, and its appearance is a two-dimensional rectangle. The reinforcing belt surrounds the four sides of the closing cloth main cloth and is cross-connected at the four corners in an "X" shape to increase the strength of the component. The fluffy ring body is a metal ring hole distributed at the four corners of the rectangular closing cloth main cloth. The circular ring is located at the center point of the closing cloth and is used to connect a stable umbrella.
[0017] Furthermore, the stabilizing parachute and the closing cloth in the parachute system are connected by a stabilizing parachute connecting belt, and the combination controls the opening process of the wing parachute; the closing cloth is received at the bottom edge of the canopy when the parachute is packed, and when the parachute is opened, the bottom edge of the canopy is inflated to cause the parachute ropes of the wing parachute to expand outward, thereby generating pressure on the four fluff rings at the four corners of the closing cloth, causing the closing cloth to slide toward the skydiver, and the closing cloth resistance and the friction between the four fluff rings and the parachute ropes of the wing parachute control the sliding speed of the closing cloth; at the same time, the resistance generated by the stabilizing parachute itself is transmitted to the closing cloth through the stabilizing parachute connecting belt, further controlling the sliding speed of the closing cloth, thereby controlling the opening speed of the wing parachute.
[0018] Furthermore, the umbrella ropes are divided into four groups, front, back, left and right, which pass through the canopy ring on the closing cloth respectively, and then the four groups of umbrella ropes are connected to the control belt, so that the closing cloth slides between the umbrella canopy and the control belt; the stabilizing umbrella is connected by the stabilizing umbrella connecting belt through the top hole on the umbrella canopy to reach the closing cloth, and is connected to the circular ring in the center of the closing cloth by a knot, so that the stabilizing umbrella is connected to the closing cloth.
[0019] Compared with the prior art, the present invention has the following significant advantages: first, under the high-altitude, high-speed and high-load working conditions with more stringent working environments, the combined parachute opening dynamic load control method of the present invention is more effective in controlling the parachute opening program; second, the combined parachute opening dynamic load control device of the present invention has a simple and reliable structure, avoids unnecessary contact with the parachute canopy and parachute ropes, and ensures the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of a stable umbrella of the present invention.
[0021] Figure 2 It is a structural schematic diagram of the closing cloth of the present invention.
[0022] Figure 3 It is a structural schematic diagram of the parafoil system of the present invention. DETAILED DESCRIPTION
[0023] The PLS (Pilot Link Slider) parachute opening dynamic load control device and method designed in the present invention solves the technical problem of paraglider opening dynamic load control under high altitude, high speed and heavy load conditions.
[0024] The PLS parachute opening dynamic load control of the present invention is a technical means to control the parachute opening dynamic load by controlling the downward sliding speed of the closing cloth to prolong the canopy inflation time, thereby controlling the parachute opening process.
[0025] The stabilizing parachute 1 and the closing cloth 4 in the parachute system are connected by the stabilizing parachute connecting belt 3, and the combination controls the paragliding process of the wing parachute. When the parachute is wrapped, the closing cloth 4 is received at the bottom edge of the canopy 2. When the parachute is opened, the bottom edge of the canopy 2 is inflated to expand the parachute rope outward, which generates pressure on the four metal ring holes 16, causing the closing cloth 4 to slide toward the parachutist. The resistance of the closing cloth 4 and the friction between the ring holes and the parachute ropes control the sliding speed of the closing cloth 4; at the same time, the resistance generated by the stabilizing parachute 1 itself is transmitted to the closing cloth 4 through the stabilizing parachute connecting belt 3, further controlling the sliding speed of the closing cloth 4, thereby controlling the opening speed of the wing parachute. In this way, the dynamic load of the main parachute opening is controlled within the acceptable range for the human body, and the purpose of protecting the parachutist's body from injury is achieved.
[0026] Structural composition
[0027] The PLS parachute opening dynamic load control method includes two components: a stabilizing parachute 1 and a closing cloth 4 .
[0028] The stable umbrella 1 is mainly composed of a stable umbrella canopy 10, a mesh 11, a reinforcement belt 12, an inner umbrella rope 13 and a connecting belt 14. Figure 1 shown.
[0029] The closing cloth 4 is mainly composed of a closing cloth main cloth 15, a fluffy ring body 16, a ring 17 and a reinforcing belt 18. Figure 2 shown.
[0030] Connection
[0031] When assembled, the umbrella ropes are divided into four groups, front, back, left and right, which pass through the canopy ring body 16 on the closing cloth 4 respectively, and then the four groups of umbrella ropes are connected to the control belt 5, so that the closing cloth 4 slides between the umbrella canopy 2 and the control belt 5; the stable umbrella 1 is connected by the stable umbrella connecting belt 3, which passes through the top hole on the umbrella canopy 2, reaches the closing cloth 4, and is connected with the ring 17 in a tacking manner, finally achieving the purpose of connecting the stable umbrella with the closing cloth, such as Figure 3 shown.
[0032] Workflow
[0033] The parachute bag 8 opens and the parachute opening procedure begins. First, the canopy cover 9 is released, so that the canopy 2 contacts the airflow and generates an expansion trend. The closing cloth 4 is at the bottom of the canopy 2 at this time, preventing the canopy 2 from fully unfolding. At the same time, the stabilizing umbrella 1 generates resistance itself, which is transmitted to the closing cloth 4 by the stabilizing umbrella connecting belt 3, and the closing cloth 4 assists the closing cloth 4 to continue to prevent the canopy 2 from expanding. Finally, when the expansion force of the canopy 2 is greater than the resistance of the closing cloth 4 and the stabilizing umbrella 1, the canopy 2 is fully inflated, and the parachute opening stage ends here and enters the gliding stage.
[0034] The invention has been tested and verified, and has been put into use. The product has good performance and can meet various index requirements.
Claims
1. A PLS parachute opening dynamic load control device, characterized in that: The stabilizing parachute (1) is located above the parachute canopy (2), and the closing cloth (4) is located below the parachute canopy (2). At the same time, the parachute rope of the wing parachute passes through the closing cloth (4). The parachute canopy (2) is provided with a top hole for passing the stabilizing parachute connecting belt (3). The upper end of the stabilizing parachute connecting belt (3) is connected to the stabilizing parachute (1), and the lower end is connected to the closing cloth (4). The closing cloth (4) is provided with a circular ring (17) and an "X"-shaped reinforcement belt (18). The circular ring (17) is a connection interface of the stabilizing parachute connecting belt (3), and the "X"-shaped reinforcement belt (18) is used to connect and fix the circular ring (17).
2. The PLS parachute opening dynamic load control device according to claim 1 is characterized in that: The stable umbrella (1) comprises a stable umbrella canopy (10), a mesh (11), a reinforcing belt (12), an inner umbrella rope (13) and a connecting belt (14); the stable umbrella (1) is in an inverted cone shape, the stable umbrella canopy (10) is the upper half of the inverted cone, the mesh (11) is the lower half of the inverted cone, the lower end of the stable umbrella canopy (10) and the upper end of the mesh (11) are connected together by sewing; the reinforcing belt (12) is radially attached to the outer surface of the stable umbrella (1); the upper end of the inner umbrella rope (13) is connected to the stable umbrella canopy (10) by sewing, and the lower end is connected to the bottom of the mesh (11); the upper end of the connecting belt (14) is connected to the bottom of the inverted cone-shaped stable umbrella (1), and the lower end is connected to the umbrella system.
3. The PLS parachute opening dynamic load control device according to claim 1, characterized in that: The closing cloth (4) comprises a closing cloth main cloth (15), a fluff ring body (16), a circular ring (17) and a reinforcing belt (18); the closing cloth main cloth (15) is the main structure of the closing cloth (4) and has a two-dimensional rectangular shape; the reinforcing belt (18) surrounds the four sides of the closing cloth main cloth (15) and is cross-connected at the four corners in an "X" shape; the fluff ring body (16) is a metal ring hole distributed at the four corners of the rectangular closing cloth main cloth (15); the circular ring (17) is located at the center point of the closing cloth (4) and is used to connect the stabilizing umbrella (1).
4. A PLS parachute opening dynamic load control method, characterized in that: The stabilizing parachute (1) and the closing cloth (4) in the parachute system are connected via the stabilizing parachute connecting belt (3), and the combination controls the paragliding process of the wing parachute. When the paraglider is wrapped, the closing cloth (4) is received at the bottom edge of the parachute canopy (2), and when the paraglider is opened, the bottom edge of the parachute canopy (2) is inflated to cause the paragliding rope of the wing parachute to expand outward, thereby generating pressure on four canopy rings (16) at the four corners of the closing cloth (4), causing the closing cloth (4) to slide towards the parachutist, and the resistance of the closing cloth (4) and the friction between the four canopy rings (16) and the paragliding rope of the wing parachute control the sliding speed of the closing cloth (4); at the same time, the resistance generated by the stabilizing parachute (1) itself is transmitted to the closing cloth (4) via the stabilizing parachute connecting belt (3), further controlling the sliding speed of the closing cloth (4), thereby controlling the opening speed of the wing parachute.
5. The PLS parachute opening dynamic load control method according to claim 4 is characterized in that: The parachute ropes are divided into four groups, front, back, left, and right, which respectively pass through the canopy ring body (16) on the closing cloth (4), and then the four groups of parachute ropes are connected to the control belt (5), so that the closing cloth (4) slides between the umbrella canopy (2) and the control belt (5); the stable umbrella (1) is connected to the closing cloth (4) by the stable umbrella connecting belt (3) through the top hole on the umbrella canopy (2), and is connected to the closing cloth (4) by the ring (17) at the center of the closing cloth (4) in a tacking manner, so that the stable umbrella (1) is connected to the closing cloth (4).