Multi-parachute connection structure and parachute opening method

Abstract

A multi-parachute connection structure and parachute opening method relate to the field of parachutes. The multi-parachute connection structure includes multiple parachute canopies and closing straps corresponding to the parachute canopies. Each closing strap slides through the corresponding parachute canopy and extends along its outer periphery for a preset length before extending out. Both ends of each closing strap are connected to the ends of adjacent closing straps. The portion of the closing strap extending out of the parachute canopy is sewn with a strong rope to form a folded section that breaks the stitching and stretches when subjected to force. The multi-parachute connection structure and parachute opening method provided in this application enable a multi-parachute system composed of multiple parachute canopies to be inflated and deployed synchronously, and slow down the deployment process of each parachute to make it continuous, which can effectively reduce the impact force of the parachute opening.

Description

Technical Field

[0001] The present application relates to the field of parachutes, and in particular to a multi-parachute connection structure and a parachute opening method. Background Art

[0002] In the currently existing multi-parachute system, each parachute is connected to the top of each parachute only by a towing parachute. During airdrop, the top of each parachute is towed by the parachute to inflate. During packaging, each parachute is also packaged in an independent parachute bag, and the canopy is folded and placed in an independent parachute bag. When the parachute is opened, the canopy is pulled out of the parachute bag to be expanded and inflated. The ends of the parachute ropes between the multiple parachutes are simultaneously connected to the fixed end of the airdrop item of the airdrop system. The opening procedure of the multiple parachutes is controlled by individually closing the multiple parachutes. However, this structure and method makes it difficult to ensure the synchronization of the closing and releasing of the parachute system during use, which will result in different opening, deployment and inflation times of the various parachutes. The earliest opened parachute will be subjected to a greater opening impact force during the initial opening process, resulting in damage and affecting the overall performance of the entire multi-parachute system.

[0003] Therefore, a parachute system and a parachute opening method are needed that can enable multiple parachute canopies to be inflated and deployed synchronously. Summary of the Invention

[0004] The purpose of this application is to provide a multi-parachute connection structure and parachute opening method, which can enable a multi-parachute system composed of multiple parachute canopies to be inflated and expanded synchronously, and slow down the expansion process of each parachute and make it continuous, which can effectively reduce the impact force of parachute opening.

[0005] The embodiment of the present application is implemented as follows:

[0006] An embodiment of the present application provides a multi-parachute connection structure, which includes multiple parachute canopies and closing straps corresponding to the parachute canopies one by one. Each closing strap slides through the corresponding parachute canopy and extends along its outer periphery for a preset length before protruding. Both ends of each closing strap are connected to the ends of adjacent closing straps. The part of the closing strap that extends out of the parachute canopy is sewn with a strong rope to form a folded section that breaks the sewing part and stretches when subjected to force.

[0007] In some optional embodiments, the closing band extends along the outer peripheral edge of the corresponding parachute canopy for 1 / 2 to 2 / 3 of its circumference and then protrudes.

[0008] In some optional embodiments, one-way spring plates are respectively connected to both ends of the closing band, and the one-way spring plates are used to extend the parachute canopy in one direction as the closing band moves.

[0009] In some optional embodiments, the distance between the two unidirectional spring sheets along the closing band is greater than or equal to the extending length of the closing band along the outer peripheral edge of the corresponding parachute canopy.

[0010] In some optional embodiments, a plurality of parachute canopies are arranged circumferentially.

[0011] In some optional embodiments, the portion of the closing band extending out of the parachute canopy is sewn into a plurality of folded sections by means of a strong rope.

[0012] The present application also provides a method for deploying multiple parachutes of the above-mentioned multiple parachute connection structure, comprising the following steps:

[0013] Use a towing parachute to connect multiple parachute canopies and place them in the parachute bag;

[0014] When opening the parachute, a traction parachute is used to pull each parachute canopy, so that the part of each parachute canopy that has not penetrated the corresponding closing strap is inflated and expanded, and the air flow flows into the part of each parachute canopy that penetrates the corresponding closing strap to inflate and expand and stretch each closing strap, so that the strong ropes sewn on the folded sections of each closing strap are stressed and stretched, until the expansion and inflation of each parachute canopy are completed.

[0015] The beneficial effects of the present application are as follows: the multi-parachute connection structure provided herein includes multiple parachute canopies and corresponding closing straps. Each closing strap slides through the corresponding parachute canopy and extends along its outer periphery for a preset length before extending outward. The ends of each closing strap are connected to the ends of adjacent closing straps. The portion of the closing strap extending outward from the parachute canopy is sewn with a strong rope to form a folded section that breaks the seam and stretches when subjected to force. The multi-parachute connection structure and parachute deployment method provided herein enable the simultaneous inflation and deployment of a multi-parachute system composed of multiple parachute canopies, slowing down the deployment process of each parachute and ensuring a continuous process, thereby effectively reducing the impact of parachute deployment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic structural diagram of a multi-parachute connection structure provided in an embodiment of the present application before deployment;

[0018] Figure 2 A schematic diagram of the structure of a multi-parachute connection structure provided in an embodiment of the present application during deployment;

[0019] Figure 3 A schematic structural diagram of a multi-parachute connection structure provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the partial structure of the closing strap of the multi-parachute connection structure provided in an embodiment of the present application.

[0021] In the figure: 100, parachute canopy; 101, restrained canopy; 102, free canopy; 110, closing strap; 120, strong rope; 130, folding section; 140, one-way spring piece; 200, traction parachute. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] 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 protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0024] 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, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0027] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The features and performance of the multi-parachute connection structure and the multi-parachute deployment method of the present application are further described in detail below with reference to the embodiments.

[0030] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the embodiment of the present application provides a multi-parachute connection structure, which includes three parachute canopies 100 arranged along the circumferential direction and closing straps 110 corresponding to the parachute canopies 100. Each closing strap 110 slides through the corresponding parachute canopy 100 and extends along the outer peripheral edge of the restraining canopy 101. The portion of the parachute canopy 100 that is not inserted into the closing strap 110 is a free canopy 102. The outer peripheral length of the restraining canopy 101 is 2 / 3 of the circumference of the parachute canopy 100. Each closing strap Both ends of 110 are connected to the ends of two adjacent closing belts 110, and the parts of the parachute canopy 100 extending out of the closing belt 110 at both ends are sewn together by strong ropes 120 to form a folded section 130 that breaks the sewing part and stretches when subjected to force; the two ends of the closing belt 110 are respectively connected to a one-way spring piece 140, which is used to extend the parachute canopy 100 in one direction as the closing belt 110 moves, and the distance between the two one-way spring pieces 140 along the corresponding closing belt 110 is equal to 2 / 3 of the circumference of the parachute canopy 100.

[0031] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the present application also provides a method for opening the above-mentioned multi-parachute connection structure, comprising the following steps:

[0032] Use the towing parachute 200 to connect the three parachute canopies 100 and place them in the parachute bag, so that the two one-way spring pieces 140 on each closing strap 110 are accommodated in the restraining canopy 101 of the corresponding parachute canopy 100. Then, the restraining canopies 101 of the three parachute canopies 100 are folded up. Then, the parts of the closing straps 110 that extend out of the parachute canopy 100 at both ends are bent and sewn together with the strong rope 120 to form a folded section 130. The two ends of each closing strap 110 are connected to the ends of the two adjacent closing straps 110. The parachute lines of the three parachute canopies 100 are connected to the delivery object to complete the delivery preparation.

[0033] When the parachute is opened after airdrop, the traction parachute 200 is first pulled out of the parachute bag, and the traction parachute 200 is used to pull each parachute canopy 100, so that the free canopy 102 part of each parachute canopy 100 that has not penetrated into the corresponding closing belt 110 is inflated and expanded first, and the air flow is made to flow through the free canopy 102 into the restraint canopy 101 part of each parachute canopy 100 that penetrates into the corresponding closing belt 110 to inflate and expand. During the inflation and expansion process of the restraint canopy 101, each closing belt 110 is stretched, so that the strong rope 120 sewn to the part of the closing belt 110 extending out of the parachute canopy 100 at both ends is broken by the force, and the folded section 130 is stretched and expanded until each parachute canopy The restrained canopy 101 and the free canopy 102 of 100 are unfolded and inflated. During the unfolding process of the parachute canopy 100, as the closing belt 110 is stretched and unfolded, the two one-way spring pieces 140 connected to the two ends of the closing belt 110 will slide forward along the closing belt 110 to the outside of the restrained canopy 101 that has escaped from the parachute canopy 100. At this time, due to the clamping and limiting effect of the one-way spring piece 140, it will be clamped on both sides of the restrained canopy 101, so that the closing belt 110 outside the two one-way spring pieces 140 will no longer shrink back into the restrained canopy 101 of the parachute canopy 100 due to rebound, thereby restraining the rebound of the parachute canopy 100.

[0034] In other optional embodiments, the portions of the closing band 110 extending out of the parachute canopy 100 at both ends may be bent and connected by glue or Velcro to form a folded section 130 .

[0035] 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 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 making creative efforts are within the scope of protection of this application.

Claims

1. A multi-parachute connection structure, characterized in that: It includes multiple parachute canopies and closing straps corresponding to the parachute canopies one by one. Each closing strap slides through the corresponding parachute canopy and extends along its outer periphery for a preset length before extending out. Both ends of each closing strap are connected to the ends of the adjacent closing straps. The part of the closing strap extending out of the parachute canopy is sewn with a strong rope to form a folded section that is stretched and stretched when stressed. One-way spring plates are respectively connected to both ends of the closing strap, and the one-way spring plates are used to extend the parachute canopy in one direction as the closing strap moves.

2. The multi-parachute connection structure according to claim 1, characterized in that: The closing belt extends along the outer peripheral edge of the corresponding parachute canopy to 1 / 2 to 2 / 3 of its circumference and then extends out.

3. The multi-parachute connection structure according to claim 1, characterized in that: The distance between the two one-way spring sheets along the closing band is greater than or equal to the extending length of the closing band along the outer peripheral edge of the corresponding parachute canopy.

4. The multi-parachute connection structure according to claim 1, characterized in that: A plurality of parachute canopies are arranged along the circumferential direction.

5. The multi-parachute connection structure according to claim 1, characterized in that: The portion of the closing band extending out of the parachute canopy is sewn together with a strong rope to form a plurality of folded sections.

6. The method for opening a multi-parachute connection structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: Use a towing parachute to connect multiple parachute canopies and place them in the parachute bag; When opening the parachute, the traction parachute is used to pull each of the parachute canopies, so that the parts of each of the parachute canopies that have not penetrated into the corresponding closing belts are inflated and expanded, and the airflow flows into the parts of each of the parachute canopies that have penetrated into the corresponding closing belts to inflate and expand and stretch each of the closing belts, so that the strong ropes sewn on the folded sections of each of the closing belts are stressed and stretched, until the expansion and inflation of each of the parachute canopies are completed.

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