Device and method for controlling load shedding of ram-type parafoil through multiple sliding cloths

Abstract

The invention discloses a device and method for controlling load shedding of a ram-type parafoil through multiple sliding cloths, and relates to the field of parachutes. The device comprises at least two pieces of sliding cloth which are sequentially arranged from top to bottom, each piece of sliding cloth comprises four circular rings, two spanwise reinforcing bands arranged in the longitudinal direction, two chordwise reinforcing bands arranged in the transverse direction, covering cloth with the four corners connected with the four circular rings respectively, and a connecting ring connected to the middle of the covering cloth. The two ends of the two spanwise reinforcing bands are connected with the two pairs of circular rings arranged in the longitudinal direction of the covering cloth respectively, the two ends of the two chordwise reinforcing bands are connected with the two pairs of circular rings arranged in the transverse direction of the covering cloth respectively, the connecting rings of the two pieces of adjacent sliding cloth are connected through a connecting rope, and the area of the covering cloth in each piece of sliding cloth is sequentially reduced from top to bottom. According to the device and method for controlling the load shedding of the ram parafoil through the multiple pieces of sliding cloth, one-time inflation and fullness of the ram parafoil can be controlled to be multiple times of inflation according to the time sequence through linkage cooperation of the multiple pieces of sliding cloth, and instant fullness and parachute opening impact of the ram parafoil can be effectively controlled.

Description

Technical Field

[0001] The present application relates to the field of parachutes, and in particular to a device and method for controlling load reduction of a ramjet parachute using multiple sliding cloths. Background Art

[0002] At present, sliding cloth is often used to reduce the impact force of the ram wing parachute opening and control the impact deployment speed of the ram wing parachute. However, since different types of ram wing parachute require sliding cloth of different sizes to match, repeated tests are required in actual use to obtain the sliding cloth size suitable for a certain type of ram wing parachute, which requires a lot of manpower and material resources for testing and is very costly. Summary of the invention

[0003] The purpose of the present application is to provide a device and method for controlling the load reduction of a ram wing parachute by using multiple sliding cloths. By coordinating multiple sliding cloths, the one-time inflation of the ram wing parachute can be controlled to multiple inflations in a time sequence, which can effectively control the instantaneous full inflation and opening impact of the ram wing parachute.

[0004] This application is implemented as follows:

[0005] The present application provides a device for controlling the load reduction of a ram wing parachute with multiple sliding cloths, which comprises at least two sliding cloths arranged in sequence from top to bottom, each sliding cloth comprising four circular rings, two spanwise reinforcement belts arranged in the longitudinal direction, two chordwise reinforcement belts arranged in the transverse direction, a covering cloth connected to the four circular rings at four corners, and a connecting ring connected to the middle of the covering cloth, the two ends of the two spanwise reinforcement belts are respectively connected to two pairs of circular rings arranged in the longitudinal direction of the covering cloth, the two ends of the two chordwise reinforcement belts are respectively connected to two pairs of circular rings arranged in the transverse direction of the covering cloth, the connecting rings of two adjacent sliding cloths are connected by a connecting rope, and the area of ​​the covering cloth in each sliding cloth decreases in sequence from top to bottom.

[0006] In some optional embodiments, the sliding cloth further comprises two obliquely arranged oblique reinforcement belts, each of which is connected to two circular rings located at both ends of the diagonal line of the covering cloth.

[0007] In some optional embodiments, the connecting ring is sleeved on two corresponding oblique reinforcement belts.

[0008] In some optional embodiments, the corresponding rings of each sliding cloth are used to be sleeved on the same group of parachute lines of the ram wing paraglider.

[0009] In some optional embodiments, at least one ring in the top sliding cloth is connected to a group of restraint ropes, and the restraint ropes are connected one-to-one with the rope buckles of the parachute ropes set in the ring, and the restraint ropes are configured to break when subjected to a preset stress.

[0010] In some optional embodiments, the length of the restraint rope gradually increases as the position of the corresponding connecting parachute rope buckle extends from the middle of the ram wing parachute to both sides.

[0011] The present application also provides a method for multi-sliding cloth controlled ram parafoil load reduction, which is performed using the multi-sliding cloth controlled ram parafoil load reduction device described above, and comprises the following steps:

[0012] At least two sliding cloths are arranged and stacked in sequence from top to bottom, and four circular rings of each sliding cloth are respectively sleeved on multiple parachute ropes of the stamped parafoil, and the connecting rings of two adjacent sliding cloths are connected by a connecting rope;

[0013] When the ram wing parachute is inflated and opened, the parachute ropes are tightened, so that the lowest sliding cloth slides down due to the tension of the parachute ropes and pulls the adjacent sliding cloths down through the corresponding connecting ropes until all the sliding cloths slide down to the intersection of the parachute ropes to fully inflate the ram wing parachute.

[0014] In some optional embodiments, before the ram wing parachute is inflated and opened, at least one ring in the top sliding cloth is connected to a group of restraint ropes, and the restraint ropes are connected one by one to the rope buckles of the parachute ropes set on the ring. When the top sliding cloth slides down, each restraint rope is pulled in turn until it breaks.

[0015] The beneficial effects of the present application are as follows: the device for controlling the load reduction of a ram wing parachute with multiple sliding cloths provided in the present application comprises at least two sliding cloths arranged in sequence from top to bottom, each sliding cloth comprises four circular rings, two spanwise reinforcement belts arranged in the longitudinal direction, two chordwise reinforcement belts arranged in the transverse direction, a covering cloth connected to the four circular rings at four corners, and a connecting ring connected to the middle of the covering cloth, the two ends of the two spanwise reinforcement belts are respectively connected to the two pairs of circular rings arranged in the longitudinal direction of the covering cloth, the two ends of the two chordwise reinforcement belts are respectively connected to the two pairs of circular rings arranged in the transverse direction of the covering cloth, the connecting rings of two adjacent sliding cloths are connected by a connecting rope, and the covering cloth area in each sliding cloth decreases in sequence from top to bottom. The device and method for controlling the load reduction of a ram wing parachute with multiple sliding cloths provided in the present application can control the full inflation of the ram wing parachute from one time to multiple inflations in a time sequence through the linkage of multiple sliding cloths, can effectively control the instantaneous full inflation and opening impact of the ram wing parachute, and achieve the purpose of delayed control of the opening of the ram wing parachute. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a device for controlling ram parafoil load reduction with multiple sliding cloths provided in an embodiment of the present application;

[0018] Figure 2A schematic diagram of a partial structure of a device for controlling ram parafoil load reduction with multiple sliding cloths and a ram parafoil connection provided in an embodiment of the present application;

[0019] Figure 3 A schematic structural diagram of the initial state of a ram parafoil in the method for controlling ram parafoil load reduction by multiple sliding cloths provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of the sliding cloth in the ram parafoil during the descent of the sliding cloth in the method for controlling the load reduction of the ram parafoil provided by the embodiment of the present application

[0021] Figure 5 A structural schematic diagram of a ram parafoil bell slide down to a fully expanded state of the ram parafoil in the method of controlling ram parafoil load reduction with multiple slide cloths provided in an embodiment of the present application.

[0022] In the figure: 100, sliding cloth; 110, circular ring; 120, span-wise reinforcement belt; 130, chord-wise reinforcement belt; 140, oblique reinforcement belt; 150, covering cloth; 160, connecting ring; 170, connecting rope; 180, restraining rope; 200, ram wing parachute; 210, parachute rope; 220, parachute rope buckle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The features and performance of the device and method for controlling ram parafoil load reduction using multiple sliding cloths of the present application are further described in detail below in conjunction with the embodiments.

[0031] like Figure 1 and Figure 2As shown, the embodiment of the present application provides a device for controlling the load reduction of a ram wing parachute with multiple sliding cloths, which includes two sliding cloths 100 arranged in sequence from top to bottom, each sliding cloth 100 includes four circular rings 110, two spanwise reinforcement belts 120 arranged in the longitudinal direction, two chord-wise reinforcement belts 130 arranged in the transverse direction, two oblique reinforcement belts 140 arranged in an oblique direction, a covering cloth 150 connected to the four circular rings 110 at four corners, and a connecting ring 160 connected to the middle of the covering cloth 150, and two spanwise reinforcement belts 120 are connected to the two spanwise reinforcement belts 120. The ends of the two sliding cloths 100 are respectively connected to two pairs of circular rings 110 arranged longitudinally along the cloth 150, the two ends of the two chord-wise reinforcement belts 130 are respectively connected to two pairs of circular rings 110 arranged transversely along the cloth 150, the two oblique reinforcement belts 140 are arranged in an X-shape and each oblique reinforcement belt 140 is connected to two circular rings 110 located at two ends of the diagonal line of the cloth 150, the connecting rings 160 of the two sliding cloths 100 are connected by a connecting rope 170, and the area of ​​the cloth 150 in the two sliding cloths 100 decreases from top to bottom. The connecting ring 160 of each sliding cloth is sleeved on two corresponding oblique reinforcement belts 140. The four corresponding circular rings 110 of the two sliding cloths 100 are respectively used to be sleeved on the three parachute ropes 210 of the ram wing parachute 200. The four rings 110 in the topmost sliding cloth 100 are respectively connected to three restraint ropes 180, and the restraint ropes 180 are connected one by one with the rope buckles 220 of the parachute ropes 210 set on the rings 110, and the restraint ropes 180 break when subjected to a preset tension. The length of the restraint ropes 180 gradually increases as the corresponding positions of the connected rope buckles 220 extend from the middle of the ram parafoil 200 to both sides.

[0032] like Figure 3 , Figure 4 and Figure 5 As shown, the present application also provides a method for multi-sliding cloth controlled ram parafoil load reduction, which is performed using the above-mentioned multi-sliding cloth controlled ram parafoil load reduction device, and includes the following steps:

[0033] Before the ram wing parachute 200 is inflated and opened, the two sliding cloths 100 are arranged and stacked in sequence from top to bottom, and the four rings 110 of each sliding cloth 100 are respectively sleeved on the three parachute ropes 210 of the ram wing parachute 200, and the connecting rings 160 of two adjacent sliding cloths 100 are connected by connecting ropes 170, and the four rings 110 in the uppermost sliding cloth 100 are respectively connected to the three restraining ropes 180, and the three restraining ropes 180 connected to each ring 110 are connected to the corresponding parachute rope buckles 220 of the three parachute ropes 210 sleeved by the ring 110, and the length of each restraining rope 180 gradually increases as the position of the correspondingly connected parachute rope buckle 220 extends from the middle of the ram wing parachute 200 to both sides;

[0034] When the ram wing parachute 200 is inflated and opened, the parachute rope 210 is tightened. Since the cover cloth 150 of the lower sliding cloth 100 has the smallest area, it is first subjected to the tension of the tightened parachute rope 210, so that the lower sliding cloth 100 slides down due to the tension of the parachute rope 210. When the lower sliding cloth 100 slides down to the preset position, the connecting rope 170 is straightened and the upper sliding cloth 100 is pulled by the connecting rope 170, so that the restraint rope 180 connecting the circular ring 110 in the upper sliding cloth 100 and the parachute rope buckle 220 is straightened and broken. When the restraint ropes 180 arranged at intervals from the middle to both sides of the ram wing parachute 200 are broken one after another, the upper sliding cloth 100 and the lower sliding cloth 100 slide down at the same time until each sliding cloth 100 slides down to the intersection of the parachute ropes to make the ram wing parachute 200 fully inflated.

[0035] The device and method for controlling the load reduction of a ram parafoil with multiple sliding cloths provided in the embodiment of the present application use double sliding cloths 100 to unfold the full area of ​​a ram parafoil 200 in steps, by connecting the double sliding cloths 100 through a connecting rope 170 with a certain stroke, and at the same time, the ring 110 of the upper sliding cloth 100 is connected to the corresponding parachute rope 210 sleeved on the ring 110 with a restraining rope 180 whose length increases from the middle to the side of the ram parafoil 200, and the parachute rope buckle 220 is restrained. When the parachute rope 210 is straightened during the inflation process of the ram parafoil 200, the tension component force of the parachute rope 210 will push the sliding cloth 100 to slide down When the tension of the parachute rope 210 is greater than the strength of the restraint rope 180, the taut restraint rope 180 breaks and stops limiting the position of the upper sliding cloth 100, so that the two sliding cloths 100 slide down synchronously, and the deployment area of ​​the ram wing parachute 200 is further increased. The above steps are repeated until all the restraint ropes 180 break and the ram wing parachute 200 is fully deployed. In this way, the intermittent inflation of the ram wing parachute 200 is limited by the double sliding cloths 100, and the one-time inflation of the ram wing parachute 200 is controlled in sequence to be multiple inflations and continuous expansion, which can effectively control the instantaneous full opening impact of the ram wing parachute 200.

[0036] In other optional embodiments, one, two or three rings 110 in the topmost sliding cloth 100 may be respectively connected to a group of restraint ropes 180, and the restraint ropes 180 are connected one-to-one with the rope buckles 220 of the parachute ropes 210 set on the rings 110, and the restraint ropes 180 break when subjected to a preset tension. Optionally, the number of restraint ropes 180 may be one, two, three or more.

[0037] In other optional embodiments, the device for controlling the load reduction of the ram wing parachute with multiple sliding cloths may also include three, four or more sliding cloths 100 arranged sequentially from top to bottom, and the connecting rings 160 of two adjacent sliding cloths 100 are connected by a connecting rope 170, and the area of ​​the covering cloth 150 in each sliding cloth 100 decreases sequentially from top to bottom.

[0038] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A device for controlling the load reduction of a ram parafoil by using multiple sliding cloths, characterized in that: It comprises at least two sliding cloths arranged in sequence from top to bottom, each of the sliding cloths comprises four circular rings, two spanwise reinforcement belts arranged in the longitudinal direction, two chordwise reinforcement belts arranged in the transverse direction, covering cloths connected to the four circular rings at four corners respectively, and a connecting ring connected to the middle of the covering cloth, the two ends of the two spanwise reinforcement belts are respectively connected to the two pairs of circular rings arranged in the longitudinal direction of the covering cloth, the two ends of the two chordwise reinforcement belts are respectively connected to the two pairs of circular rings arranged in the transverse direction of the covering cloth, the connecting rings of two adjacent sliding cloths are connected by a connecting rope, and the area of ​​the covering cloth in each sliding cloth decreases in sequence from top to bottom.

2. The device for controlling ram parafoil load reduction by using multiple sliding cloths according to claim 1, characterized in that: The sliding cloth further comprises two obliquely arranged oblique reinforcement belts, each of which is connected to the two circular rings located at the two ends of the diagonal line of the covering cloth.

3. The device for controlling ram parafoil load reduction by using multiple sliding cloths according to claim 2, characterized in that: The connecting ring is sleeved on two corresponding oblique reinforcement belts.

4. The device for controlling ram parafoil load reduction by using multiple sliding cloths according to claim 1, characterized in that: The corresponding circular rings of each sliding cloth are used to be sleeved on the same group of parachute ropes of the stamped parafoil.

5. The device for controlling ram parafoil load reduction by using multiple sliding cloths according to claim 4, characterized in that: At least one of the circular rings in the uppermost sliding cloth is connected to a group of restraint ropes, and the restraint ropes are connected one-to-one with the rope buckles of the parachute ropes sleeved by the circular ring, and the restraint ropes are configured to break when subjected to a preset stress.

6. The device for controlling ram parafoil load reduction by using multiple sliding cloths according to claim 5, characterized in that: The length of the restraint rope gradually increases as the position corresponding to the connection with the parachute rope buckle extends from the middle of the ram wing parachute to both sides.

7. A method for controlling load reduction of a ram parafoil by using multiple sliding cloths, characterized in that: The method is carried out by using a device for controlling the load reduction of a ram parafoil with a multi-slide cloth as claimed in any one of claims 1 to 6, and comprises the following steps: Arrange and stack at least two sliding cloths from top to bottom in sequence, and respectively sleeve the four rings of each sliding cloth on multiple parachute ropes of the stamped parafoil, and connect the connecting rings of two adjacent sliding cloths through a connecting rope; When the ram wing parachute is inflated and opened, the parachute ropes are tightened, so that the lowest sliding cloth slides down due to the tension of the parachute ropes and the adjacent sliding cloths are pulled down by the corresponding connecting ropes until all the sliding cloths slide down to the intersection of the parachute ropes to fully inflate the ram wing parachute.

8. The method for reducing load of a ram parafoil by controlling multiple sliding cloths according to claim 7, characterized in that: Before the ram wing parachute is inflated and opened, at least one of the circular rings in the uppermost sliding cloth is connected to a group of restraint ropes, and the restraint ropes are connected one by one to the rope buckles of the parachute ropes set on the circular ring. When the uppermost sliding cloth slides down, each of the restraint ropes is pulled in turn until it breaks.

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