Split type sliding cloth and method for controlling unfolding of ram parafoil

Abstract

The invention discloses split type sliding cloth and a method for controlling unfolding of a ram parafoil, and relates to the field of parachutes. The split type sliding cloth comprises at least four circular rings, left sliding cloth and right sliding cloth, the two sides of the ends, away from each other, of the left sliding cloth and the right sliding cloth are connected with at least one circular ring respectively, and the middles of the left sliding cloth and the right sliding cloth are connected with multiple sets of restraining velvet belts and restraining hook belts respectively. When the restraining velvet belts and the corresponding restraining hook belts are bonded, the middle portions of the corresponding left sliding cloth or the right sliding cloth are folded in the length direction, the ends, away from each other, of the left sliding cloth and the right sliding cloth are provided with first-stage connecting buckles connected through first-stage constant force ropes respectively, and the adjacent ends of the left sliding cloth and the right sliding cloth are provided with second-stage connecting buckles connected through second-stage constant force ropes respectively. The length and the strength of the first-level anchoring force rope are smaller than those of the second-level anchoring force rope, and the bonding strength of the restraining velvet belt and the restraining hook belt is smaller than the strength of the second-level anchoring force rope. The split type sliding cloth and the method for controlling the ram-type parafoil to unfold can control the ram-type parafoil to unfold stage by stage, and the instantaneous parachute opening impact force of the ram-type parafoil is reduced.

Description

Technical Field

[0001] The present application relates to the field of parachutes, and in particular to a separable sliding cloth and a method for controlling the deployment of a ram wing parachute. Background Art

[0002] When a ram wing parachute is opened, it mainly relies on ram air to inflate and expand the wing shape. The opening state of this parachute formed by ram air is generally disordered and uncontrollable. The micro-permeable material of the ram wing parachute will produce a large relative motion resistance when the parachute is opened instantly, just like a fast-moving car will often produce a large impact force if it stops instantly. It is necessary to adopt a parachute opening control method to reduce the impact force of the parachute opening.

[0003] Currently, the commonly used method for controlling the opening of a ram wing parachute is to use a sliding cloth for control. However, the sliding cloth often slides down too fast during the opening of the ram wing parachute and cannot adjust the opening speed well, resulting in a significant reduction in the control effect of directly using the sliding cloth, making it difficult to meet the opening needs of the ram wing parachute. Summary of the invention

[0004] The purpose of the present application is to provide a separable sliding cloth and a method for controlling the deployment of a ram wing parachute, which can gradually control the sliding cloth to slide down along the parachute rope of the ram wing parachute to realize the staged and step-by-step parachute opening operation of the ram wing parachute, and effectively reduce the instantaneous parachute opening impact force of the ram wing parachute.

[0005] This application is implemented as follows:

[0006] The present application provides a separable sliding cloth, which comprises at least four circular rings and a left sliding cloth and a right sliding cloth arranged symmetrically, wherein at least one circular ring is respectively connected to the two sides of one end of the left sliding cloth away from the right sliding cloth and the two sides of the end of the right sliding cloth away from the left sliding cloth, and the middle of the left sliding cloth and the right sliding cloth are respectively connected to multiple groups of one-to-one corresponding constraint velvet belts and constraint hook belts extending along the length direction, and when the constraint velvet belts and the corresponding constraint hook belts are bonded, the middle part of the corresponding left sliding cloth or the right sliding cloth is folded along the length direction, and the ends of the left sliding cloth and the right sliding cloth away from each other are respectively provided with multiple pairs of primary connecting buckles, and the two corresponding primary connecting buckles are connected by a primary fixing rope, and the adjacent ends of the left sliding cloth and the right sliding cloth are respectively provided with multiple pairs of secondary connecting buckles, and the two corresponding secondary connecting buckles are connected by a secondary fixing rope, the length and strength of the primary fixing rope are less than the length and strength of the secondary fixing rope, and the bonding strength of the constraint velvet belt and the constraint hook belt is less than the strength of the secondary fixing rope.

[0007] In some optional embodiments, at least four limiting ropes with rope buckles at both ends are further included, each ring is provided with a limiting hole for the two ends of at least one limiting rope to pass through, the middle part of the limiting rope passes through a group of umbrella rope cross-linking holes of the stamped wing parachute, and after the two ends of the limiting rope pass through a ring, the two rope buckles are sleeved on a fixed pin, and the fixed pin is connected to the first and second level connecting buckles through the release rope; the second level connecting buckle and the corresponding fixed pin are respectively connected to the left sliding cloth and the right sliding cloth.

[0008] In some optional implementation schemes, the two ends of the limiting rope pass through a ring, and the two rope buckles are inserted together and then sleeved on the fixed pin.

[0009] In some optional embodiments, two connecting belts are further included, and the two circular rings connected by the left sliding cloth and the two circular rings connected by the right sliding cloth are respectively connected by a connecting belt.

[0010] In some optional embodiments, each primary connecting buckle is connected to the corresponding connecting belt via a fixing belt.

[0011] The present application also provides a method for controlling the deployment of a ram wing parachute, which is performed using the above-mentioned separable sliding cloth, and comprises the following steps:

[0012] Before the ram wing parachute is opened, the ram wing parachute is compressed and folded along the unfolding direction, four rings of the separable sliding cloth are respectively sleeved on at least one parachute rope of the ram wing parachute, and the restraining velvet belt and the corresponding restraining hook belt are bonded to fold the middle part of the corresponding left sliding cloth or right sliding cloth along the unfolding direction;

[0013] When the ram wing parachute is opened, the detachable sliding cloth slides down along the parachute ropes until each primary retaining rope is straightened and disconnected, and then the detachable sliding cloth continues to slide down along the parachute ropes until the bonded restraining velvet belt and the restraining hook belt are torn off, so that the detachable sliding cloth is unfolded and continues to slide down along the parachute ropes until the secondary retaining ropes are straightened and disconnected, so that the left sliding cloth and the right sliding cloth are separated and then slide down respectively until the canopy of the ram wing parachute is inflated and fully expanded.

[0014] In some optional embodiments, the following steps are also included:

[0015] Before the ram wing parachute is opened, the middle parts of at least four limit ropes with rope buckles at both ends are respectively passed through a group of parachute rope cross-linking holes of the ram wing parachute, and the two ends of the limit rope are passed through a ring so that the two rope buckles are sleeved on a fixed pin, and the fixed pin is connected to the first and second level connecting buckles through the release rope; the second level connecting buckle and the corresponding fixed pin are respectively connected to the left sliding cloth and the right sliding cloth;

[0016] When the ram wing parachute is opened, the secondary force rope is straightened and then disconnected to separate the left sliding cloth and the right sliding cloth. The fixed pin is connected to the secondary connecting buckle through the release rope to limit the position of the left sliding cloth and the right sliding cloth until the fixed pin is pulled out under force and detaches from the rope buckle. The position limit of the left and right sliding cloth is released and slides down until the canopy of the ram wing parachute is fully inflated.

[0017] The beneficial effects of the present application are as follows: the separable sliding cloth provided by the present application comprises at least four circular rings and a left sliding cloth and a right sliding cloth arranged symmetrically, wherein at least one circular ring is respectively connected to two sides of one end of the left sliding cloth away from the right sliding cloth and two sides of one end of the right sliding cloth away from the left sliding cloth, and the middle of the left sliding cloth and the right sliding cloth are respectively connected to multiple groups of one-to-one corresponding constraint velvet belts and constraint hook belts extending along the length direction, and when the constraint velvet belts and the corresponding constraint hook belts are bonded, the middle part of the corresponding left sliding cloth or the right sliding cloth is folded along the length direction, and multiple pairs of primary connecting buckles are respectively provided at the ends of the left sliding cloth and the right sliding cloth away from each other, and the two corresponding primary connecting buckles are connected by a primary fixing rope, and multiple pairs of secondary connecting buckles are respectively provided at the adjacent ends of the left sliding cloth and the right sliding cloth, and the two corresponding secondary connecting buckles are connected by a secondary fixing rope, the length and strength of the primary fixing rope are less than the length and strength of the secondary fixing rope, and the bonding strength of the constraint velvet belt and the constraint hook belt is less than the strength of the secondary fixing rope. The separable sliding cloth and the method for controlling the deployment of the ram wing parachute provided in the present application can gradually control the sliding cloth to slide down along the parachute rope of the ram wing parachute to realize the staged and step-by-step parachute opening operation of the ram wing parachute, effectively reducing the instantaneous parachute opening impact force of the ram wing parachute. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 A schematic diagram of the structure of the detachable sliding cloth provided in an embodiment of the present application, which is arranged on a ram wing parachute to constrain the parachute rope when the parachute is opened;

[0020] Figure 2 A schematic structural diagram of a first use state of a detachable sliding cloth provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the partial structure of a detachable sliding cloth provided in an embodiment of the present application;

[0022] Figure 4 A schematic structural diagram of a second use state of the separable sliding cloth provided in an embodiment of the present application after the primary fixed force rope of the separable sliding cloth is broken and the restraining velvet belt and the restraining hook belt on the left sliding cloth are separated;

[0023] Figure 5 This is a schematic diagram of the structure in which the separable sliding cloth provided in an embodiment of the present application is arranged on a stamped parafoil and the stamped parafoil is unfolded.

[0024] In the figure: 100, ring; 110, left sliding cloth; 120, right sliding cloth; 130, restraining velvet belt; 140, restraining hook belt; 150, primary connecting buckle; 160, primary fixing rope; 170, secondary connecting buckle; 180, secondary fixing rope; 190, limiting rope; 200, rope buckle; 210, limiting hole; 220, fixing pin; 230, releasing rope; 240, connecting belt; 250, fixing belt; 300, ram wing parachute; 310, parachute rope. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] The features and performance of the separable sliding cloth and the method for controlling the deployment of the ram parafoil of the present application are further described in detail below in conjunction with the embodiments.

[0033] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides a separable sliding cloth, which includes four circular rings 100, symmetrically arranged left sliding cloths 110 and right sliding cloths 120, two connecting belts 240 and four limiting ropes 190 with rope buckles 200 at both ends, the two sides of the left sliding cloth 110 away from the right sliding cloth 120 and the two sides of the right sliding cloth 120 away from the left sliding cloth 110 are respectively connected to a circular ring 100, and the two circular rings 100 connected to the left sliding cloth 110 and the two circular rings 100 connected to the right sliding cloth 120 are respectively connected by a connecting belt 240;

[0034] The middle of the left sliding cloth 110 and the right sliding cloth 120 are respectively connected with five groups of corresponding restraining velvet belts 130 and restraining hook belts 140 extending in the length direction. The five groups of restraining velvet belts 130 and restraining hook belts 140 are respectively arranged at intervals along the width direction of the left sliding cloth 110 and the right sliding cloth 120. When the restraining velvet belts 130 and the corresponding restraining hook belts 140 are bonded or separated, the middle part of the corresponding left sliding cloth 110 or the right sliding cloth 120 is folded or unfolded along the length direction. The ends of the left sliding cloth 110 and the right sliding cloth 120 away from each other are respectively provided with five pairs of corresponding primary connecting buckles 150. The five pairs of primary connecting buckles 150 are respectively arranged at intervals along the width direction of the left sliding cloth 110 and the right sliding cloth 120. The corresponding first-level connecting buckles 150 are connected by a first-level retaining rope 160, and each first-level connecting buckle 150 is connected to the corresponding connecting belt 240 by a fixing belt 250; five pairs of corresponding second-level connecting buckles 170 are respectively provided at the adjacent ends of the left sliding cloth 110 and the right sliding cloth 120, and the five pairs of second-level connecting buckles 170 are respectively arranged at intervals along the width direction of the left sliding cloth 110 and the right sliding cloth 120, and two corresponding second-level connecting buckles 170 are connected by a second-level retaining rope 180, the length and strength of the first-level retaining rope 160 are smaller than the length and strength of the second-level retaining rope 180, and the bonding strength of the restraining velvet belt 130 and the restraining hook belt 140 is smaller than the strength of the second-level retaining rope 180.

[0035] Each circular ring 100 is provided with a limiting hole 210 for the two ends of a limiting rope 190 to pass through, the middle parts of the four limiting ropes 190 respectively pass through the cross-linking holes of the four parachute ropes 310 at the four corners of the stamping wing parachute 300, and the two ends of the four limiting ropes 190 respectively pass through the four circular rings 100 so that the two corresponding rope buckles 200 are inserted together and then sleeved on a fixed pin 220, and each fixed pin 220 is connected to a secondary connecting buckle 170 through a release rope 230; the fixed pin 220 sleeved on the rope buckle 200 of the circular ring 100 corresponding to the limiting rope 190 on the left sliding cloth 110 is connected to the secondary connecting buckle 170 on the right sliding cloth 120 through the release rope 230, and the fixed pin 220 sleeved on the rope buckle 200 of the circular ring 100 corresponding to the limiting rope 190 on the right sliding cloth 120 is connected to the secondary connecting buckle 170 on the left sliding cloth 110 through the release rope 230.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present application also provides a method for controlling the deployment of a ram wing parachute, which is performed using the above-mentioned detachable sliding cloth, and includes the following steps:

[0037] Before the ram parafoil 300 is opened, the ram parafoil 300 is compressed and folded in the unfolding direction, and each ring 100 of the separable sliding cloth is respectively mounted on the four parachute ropes 310 at one corner of the ram parafoil 300, so that the left sliding cloth 110 and the right sliding cloth 120 of the separable sliding cloth are arranged in sequence along the unfolding direction of the ram parafoil 300, and the restraining velvet belt 130 and the corresponding restraining hook belt 140 are bonded to make the middle parts of the corresponding left sliding cloth 110 and the right sliding cloth 120 folded along the unfolding direction of the ram parafoil 300; the middle parts of the four limiting ropes 190 with rope buckles 200 at both ends are respectively passed through the cross-linking holes of the four parachute ropes 310 at one corner of the ram parafoil 300. , after passing the two ends of the four limiting ropes 190 through the four rings 100 respectively, the two corresponding rope buckles 200 are put together and then sleeved on a fixed pin 220, and the fixed pin 220 is connected to the first and second level connecting buckle 170 through the release rope 230, the fixed pin 220 sleeved by the rope buckle 200 of the ring 100 corresponding to the limiting rope 190 on the left sliding cloth 110 is connected to the second level connecting buckle 170 on the right sliding cloth 120 through the release rope 230, and the fixed pin 220 sleeved by the rope buckle 200 of the ring 100 corresponding to the limiting rope 190 on the right sliding cloth 120 is connected to the second level connecting buckle 170 on the left sliding cloth 110 through the release rope 230;

[0038] When the ram wing parachute 300 is opened, the separable sliding cloth slides down along the parachute rope 310. Due to the restriction of the four limit ropes 190, the separable sliding cloth slides down until each limit rope 190 is straightened and stops sliding down. At this time, due to the expansion of the ram wing parachute 300, the tension of the parachute rope 310 increases, so that each primary fixed force rope 160 is straightened and the stress reaches the breaking strength and breaks. The separable sliding cloth is expanded along the length direction, that is, the expansion direction of the ram wing parachute 300, and the expansion area of ​​the ram wing parachute 300 continues to increase.

[0039] The separable sliding cloth continues to slide down along the parachute rope 310 until the tension of the parachute rope 310 pushes the restraining velvet belt 130 and the restraining hook belt 140 bonded on the left sliding cloth 110 and the right sliding cloth 120 to tear apart, so that the left sliding cloth 110 and the right sliding cloth 120 are respectively unfolded along the length direction, and the unfolding area of ​​the ram wing parachute 300 continues to increase;

[0040] After the detachable sliding cloth is unfolded, it continues to slide down along the parachute rope 310 until the secondary fixed force rope 180 is straightened and the stress it is subjected to reaches the breaking strength and breaks. At this time, the four fixed pins 220 are connected to the secondary connecting buckle 170 through the release rope 230 to limit the position of the left sliding cloth 110 and the right sliding cloth 120. When each fixed pin 220 is pulled out by force and disengaged from the corresponding rope buckle 200, the position limit of the left sliding cloth 110 and the right sliding cloth 120 is released and they slide down respectively until the canopy of the ram wing parachute 300 is fully inflated and the left sliding cloth 110 and the right sliding cloth 120 slide down to the intersection of the parachute rope 310.

[0041] The separable sliding cloth and the method for controlling the deployment of a ram wing parachute provided in the embodiment of the present application are provided by setting a left sliding cloth 110 and a right sliding cloth 120 arranged in sequence along the deployment direction of the ram wing parachute 300, and respectively using a first-level connecting buckle 150 and a first-level fixing rope 160, a second-level connecting buckle 170 and a second-level fixing rope 180 to constrain the left sliding cloth 110 and the right sliding cloth 120 along the deployment direction of the ram wing parachute 300, and using a restraining velvet belt 130 and a restraining hook belt 140 to fold and constrain the left sliding cloth 110 and the right sliding cloth 120 respectively along the deployment direction of the ram wing parachute 300, and after using a limiting rope 190 to pass through the cross-linking part of the parachute rope 310, the two ends of the limiting rope 190 are further passed through the rings 100 on the left sliding cloth 110 and the right sliding cloth 120, and then connected to each other through a fixing pin 220 and a release rope 230. The secondary connecting buckle 170 on the right sliding cloth 120 and the left sliding cloth 110 should be used, so that in the process of opening the ram wing parachute 300, the left sliding cloth 110 and the right sliding cloth 120 are limited in the expansion and separation along the expansion direction of the ram wing parachute 300 through the primary connecting buckle 150 and the primary fixing rope 160, the restraining velvet belt 130 and the restraining hook belt 140, the secondary connecting buckle 170 and the secondary fixing rope 180 and the limiting rope 190, the fixing pin 220, the release rope 230 and the secondary connecting buckle 170 in sequence, thereby ensuring that the left sliding cloth 110 and the right sliding cloth 120 continue to increase the expansion area in the span direction at a specific position, so that the expansion area of ​​the ram wing parachute 300 is also expanded and inflated synchronously, until the left sliding cloth 110 and the right sliding cloth 120 are separated, and the expansion of the ram wing parachute 300 is stopped to make the ram wing parachute 300 fully inflated.

[0042] The separable sliding cloth and the method for controlling the deployment of a ram wing parachute provided in the embodiments of the present application change the state of the ram wing parachute 300 being instantly fully filled as soon as it is deployed during the inflation process, and divide the ram wing parachute 300 from deployment and inflation to full inflation into four stages: initial inflation, secondary inflation, tertiary inflation, and full inflation, thereby effectively reducing the instantaneous impact force generated by the instantaneous opening of the ram wing parachute 300.

[0043] 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 separable sliding cloth, characterized in that: The strap has two zip ties, one for each of which is attached to the strap, and the other for each of which is attached to the strap, wherein the strap has two zip ties, one for each of which is attached to the strap, and the other for each of which is attached to the strap.

2. The separable sliding cloth according to claim 1, characterized in that: It also includes at least four limiting ropes with rope buckles at both ends, each of the circular rings is provided with a limiting hole for the two ends of at least one of the limiting ropes to pass through, the middle part of the limiting rope passes through a group of umbrella rope cross-linking holes of the stamped wing parachute, and after the two ends of the limiting rope pass through a circular ring, the two rope buckles are sleeved on a fixed pin, and the fixed pin is connected to a secondary connecting buckle through a release rope; the secondary connecting buckle and the corresponding fixed pin are respectively connected to the left sliding cloth and the right sliding cloth.

3. The separable sliding cloth according to claim 2, characterized in that: After the two ends of the limit rope pass through a circular ring, the two rope buckles are inserted together and then sleeved on the fixed latch.

4. The separable sliding cloth according to claim 1, characterized in that: It also includes two connecting belts, and the two circular rings connected by the left sliding cloth and the two circular rings connected by the right sliding cloth are respectively connected by one of the connecting belts.

5. The separable sliding cloth according to claim 4, characterized in that: Each of the primary connecting buckles is connected to the corresponding connecting belt via a fixing belt.

6. A method for controlling the deployment of a ram wing parachute, characterized in that: The method is carried out using the separable sliding cloth according to any one of claims 1 to 5, and comprises the following steps: Before the stamped wing parachute is opened, the stamped wing parachute is compressed and folded along the unfolding direction, the four rings of the separable sliding cloth are respectively sleeved on at least one parachute rope of the stamped wing parachute, and the restraining velvet belt and the corresponding restraining hook belt are bonded to fold the middle part of the corresponding left sliding cloth or the right sliding cloth along the unfolding direction; When the ram wing parachute is opened, the detachable sliding cloth slides down along the parachute rope until each primary retaining rope is straightened and disconnected, and then the detachable sliding cloth continues to slide down along the parachute rope until the bonded restraining velvet belt and the restraining hook belt are torn off, so that the detachable sliding cloth is unfolded and continues to slide down along the parachute rope until the secondary retaining rope is straightened and disconnected, so that the left sliding cloth and the right sliding cloth are separated and then slide down respectively until the canopy of the ram wing parachute is inflated and fully expanded.

7. The method for controlling the deployment of a ram wing parachute according to claim 6, characterized in that: The following steps are also included: Before the punched wing parachute is opened, the middle parts of at least four limit ropes with rope buckles at both ends are respectively passed through a group of parachute rope cross-linking holes of the punched wing parachute, and after the two ends of the limit rope are passed through a ring, the two rope buckles are sleeved on a fixed pin, and the fixed pin is connected to a secondary connecting buckle through a release rope; the secondary connecting buckle and the corresponding fixed pin are respectively connected to the left sliding cloth and the right sliding cloth; When the ram wing parachute is opened, the secondary force rope is straightened and then disconnected to separate the left sliding cloth and the right sliding cloth, and the fixing pin is connected to the secondary connecting buckle through the release rope to limit the positions of the left sliding cloth and the right sliding cloth until the fixing pin is pulled out by force and detaches from the rope buckle, and the position limits of the left sliding cloth and the right sliding cloth are released and slide down until the canopy of the ram wing parachute is fully inflated.

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