Closing control structure and method of parachute

Abstract

The invention discloses a closing-in control structure and method of a parachute, and relates to the field of parachutes. The closing-up control structure of the parachute comprises a parachute support arranged at an opening in the bottom of a main parachute, N radial closing-up ropes arranged in the circumferential direction of the parachute support at intervals, at least one circumferential closing-up rope arranged on the outer wall of the bottom of the main parachute in a sleeving mode and a delay actuator used for cutting off the circumferential closing-up ropes at regular time. The bottom of the main umbrella is connected with a plurality of closing-up rings arranged at intervals in the circumferential direction of the main umbrella, the two ends of each radial closing-up rope are connected to the edge of the umbrella support, the middle of each radial closing-up rope penetrates through one closing-up ring at the bottom of the main umbrella, and the middle of the last radial closing-up rope penetrates through the closing-up ring and the main umbrella and then is arranged on the circumferential closing-up rope in a sleeving mode. The middle of the Nth radial closing-in rope penetrates through the closing-in circular ring and then is arranged on the middle, penetrating through the closing-in circular ring, of the (N-1) th adjacent radial closing-in rope in a sleeving mode, and N is a positive integer larger than or equal to 2. According to the closing control structure and method of the parachute, the parachute opening time of the canopy can be shortened, the hang height is reduced, the parachute opening consistency of the parachute is guaranteed, and the parachute opening performance is remarkably improved.

Description

Technical Field

[0001] The present application relates to the field of parachutes, and in particular to a parachute closing control structure and method. Background Art

[0002] Large parachutes are mostly used in the delivery of heavy-duty cargo parachutes at high speeds and high altitudes. In order to reduce the dynamic load of opening large parachutes, a circumferential closing method is often used on the bottom edge. The structural characteristics of large parachutes themselves determine that the system is long, there are many parachute ropes, the bottom edge of the parachute is repeatedly folded and stacked in a zigzag shape, the bottom edge is greatly affected by the airflow during air intake, there is obvious mutual interference, and the deployment is slow.

[0003] The pressure of the circumferential closing structure of the bottom edge of the traditional canopy is slow to build up. The opening procedure of the large parachute with this structure is not affected as a single parachute. It is manifested by a slightly longer inflation time, an affected minimum airdrop altitude, and a longer hovering time. However, the opening inconsistency of the large closing parachute used in the group parachute system is obvious. The reason for this is that the positions of the parachutes in the group parachute are different, and each parachute is affected by the airflow differently. Even if the straightening time and the time when the maximum straightening force appears are exactly the same, the phenomenon of asynchronous inflation has already appeared since the inflation of the closing state. As the number of parachutes increases, the asynchronous phenomenon becomes more and more obvious. The large parachute has a large circumference and a long bottom edge. As a flexible product, the conventional circumferential closing airflow reaches the top of the parachute first, and the bottom edge is inflated from the top. Then the air inlet of the parachute in the middle is easily squeezed, and it is greatly affected by the surrounding environment during inflation. If the inflation is not timely, one or more parachutes in the group parachute will fail, resulting in a falling speed exceeding the preset value. The impact of the equipment landing will affect the accuracy of the equipment. Even for a single parachute, there is a problem that the bottom edge unfolds slowly and the air inlet pressure is insufficient when the closing is released.

[0004] Therefore, a parachute closing control structure and method are needed to achieve rapid parachute opening and improve the consistency of group parachute opening. Summary of the invention

[0005] The purpose of the present application is to provide a parachute closing control structure and method, which can reduce the opening time of a large canopy, reduce the hovering altitude, ensure a greater degree of consistency of the large parachute, significantly improve the opening performance and play an anti-interference, anti-collapse and other roles.

[0006] This application is implemented as follows:

[0007] The present application provides a closing control structure of a parachute, which comprises an umbrella strut arranged at an opening at the bottom of a main parachute, N radial closing ropes arranged at intervals along the circumference of the umbrella strut, at least one circumferential closing rope sleeved on the outer wall of the bottom of the main parachute, and a delay actuator for timing cutting off the circumferential closing rope, wherein the bottom of the main parachute is connected with a plurality of closing circular rings arranged at intervals along its circumference, the two ends of each radial closing rope are connected to the edge of the umbrella strut, the middle part of each radial closing rope passes through a closing circular ring at the bottom of the main parachute, the middle part of the last radial closing rope passes through the closing circular ring and the main parachute and is sleeved on the circumferential closing rope, the middle part of the Nth radial closing rope passes through the closing circular ring and is sleeved on the middle part of the N-1th adjacent radial closing rope passing through the closing circular ring, and N is a positive integer greater than or equal to 2.

[0008] In some optional embodiments, the outer wall of the bottom of the main umbrella is connected to at least one closing rope protective sleeve extending along its circumference, and the circumferential closing rope passes through the closing rope protective sleeve.

[0009] In some optional embodiments, the outer wall of the bottom of the main parachute is connected to an actuator protection cover which is sleeved on the time-delay actuator.

[0010] In some optional embodiments, N is a positive integer greater than or equal to 10.

[0011] In some optional embodiments, the umbrella strut includes at least a plurality of support rings arranged sequentially from the inside to the outside and a plurality of radiation strips arranged at intervals along the circumference of the support rings, and each radiation strip is connected to each support ring.

[0012] The present application also provides a parachute closing control method, which is performed using the above-mentioned parachute closing control structure, and includes the following steps:

[0013] The main parachute is opened for landing, the parachute strut is stretched by radial closing ropes to limit the opening size of the bottom of the main parachute, and the position of the outer wall of the main parachute is limited by circumferential closing ropes;

[0014] When the main parachute needs to be further opened, the delayed actuator is controlled to cut off the circumferential closing ropes to stop limiting the position of the outer wall of the main parachute, and each radial closing rope is sequentially stopped from being tensioned to limit the size of the opening at the bottom of the main parachute, so that the opening at the bottom of the main parachute is opened, and the airflow opens the canopy from the bottom of the main parachute.

[0015] The beneficial effects of the present application are as follows: the closing control structure of the parachute provided by the present application comprises an umbrella strut arranged at the bottom opening of the main parachute, N radial closing ropes arranged at intervals along the circumference of the umbrella strut, at least one circumferential closing rope sleeved on the outer wall of the bottom of the main parachute, and a delay actuator for timed cutting of the circumferential closing rope, the bottom of the main parachute is connected with a plurality of closing rings arranged at intervals along its circumference, both ends of each radial closing rope are connected to the edge of the umbrella strut, the middle part passes through a closing ring at the bottom of the main parachute, the middle part of the last radial closing rope passes through the closing ring and the main parachute and is then sleeved on the circumferential closing rope, the middle part of the Nth radial closing rope passes through the closing ring and is then sleeved on the middle part of the N-1th adjacent radial closing rope passing through the closing ring, and N is a positive integer greater than or equal to 2. The parachute closing control structure and method provided in the present application can reduce the opening time of a large canopy, lower the hovering altitude, ensure a greater degree of consistency for large parachutes, significantly improve the opening performance, and play a role in anti-interference and anti-collapse. 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 the closing control structure of the parachute provided in an embodiment of the present application when it is installed on the main parachute;

[0018] Figure 2 A schematic diagram of a partial structure of a closing control structure of a parachute provided in an embodiment of the present application, in which one end of a radial closing rope passing through a closing ring is sleeved on one end of an adjacent radial closing rope passing through a corresponding closing ring when the closing control structure of the parachute provided in an embodiment of the present application is installed on a main parachute;

[0019] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] Figure 4 A schematic diagram of the structure of a delayed actuator of a closing control structure of a parachute provided in an embodiment of the present application;

[0021] Figure 5 A schematic structural diagram of an umbrella support in a closing control structure of a parachute provided in another embodiment of the present application.

[0022] In the figure: 100, main parachute; 110, opening; 120, radial closing rope; 130, circumferential closing rope; 140, delay actuator; 150, closing ring; 160, closing rope protection cover; 170, actuator protection cover; 180, through hole; 200, umbrella support; 210, support ring; 220, radiation strip. 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 parachute closing control structure and method of the present application are further described in detail below in conjunction with the embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the embodiment of the present application provides a closing control structure of a parachute, which is used to improve the opening performance of a main parachute 100, and comprises an umbrella support 200 arranged at an opening 110 at the bottom of the main parachute 100, N radial closing ropes 120 arranged at intervals along the circumferential direction of the umbrella support 200, a circumferential closing rope 130 sleeved on the outer wall of the bottom of the main parachute 100, and a delay actuator 140 for timing cutting off the circumferential closing rope 130, the bottom of the main parachute 100 is connected to a closing ring 150 arranged at intervals along the circumference thereof, the closing ring 150 corresponds to the radial closing rope 120 one by one, the two ends of each radial closing rope 120 are connected to the edge of the umbrella support 200, the middle part passes through a corresponding closing ring 150 at the bottom of the main parachute 100, and the middle part of the last radial closing rope 120 passes through the corresponding closing ring 150 at the bottom of the main parachute 100. 50 and the through hole 180 on the main umbrella 100 are sleeved on the circumferential closing rope 130, the middle part of the N-th radial closing rope 120 passes through the corresponding closing ring 150 and is sleeved on the middle part of the adjacent N-1-th radial closing rope 120 passing through the corresponding closing ring 150, in this embodiment, N is 20; the outer wall of the bottom of the main umbrella 100 is connected with a closing rope protective cover 160 extending along the circumference thereof, the circumferential closing rope 130 passes through the closing rope protective cover 160, the outer wall of the bottom of the main umbrella 100 is connected with an actuator protective cover 170 sleeved on the delay actuator 140, and the umbrella support 200 includes at least two support rings 210 arranged in sequence from the inside to the outside and 20 radial strips 220 arranged at intervals along the circumference of the support ring 210, and each radial strip 220 is connected to each support ring 210.

[0032] The embodiment of the present application also provides a parachute closing control method, which is performed using the above-mentioned parachute closing control structure, and includes the following steps:

[0033] The main parachute 100 is opened for landing, the parachute support 200 is stretched by the radial closing rope 120 to limit the size of the opening 110 at the bottom of the main parachute 100, and the circumferential closing rope 130 is used to limit the position of the outer wall of the main parachute 100;

[0034] When the main parachute 100 needs to be further opened, the delayed actuator 140 is controlled to cut off the circumferential closing rope 130 to stop limiting the position of the outer wall of the main parachute 100, and each radial closing rope 120 is sequentially stopped from tensioning to limit the size of the opening 110 at the bottom of the main parachute 100, so that the opening 110 at the bottom of the main parachute 100 is opened, and the airflow opens the canopy from the bottom of the main parachute 100.

[0035] The closing control structure and method of the parachute provided in the embodiment of the present application changes the direction of high-pressure airflow movement of a large-area closing parachute by setting a parachute opening and closing control structure at the bottom opening 110 of the canopy of the main parachute 100, thereby improving the opening performance of a large parachute. The parachute opening and closing control structure includes an umbrella support 200 arranged at the bottom opening 110 of the main parachute 100, radial closing ropes 120 arranged at intervals along the circumferential direction of the umbrella support 200, a circumferential closing rope 130 sleeved on the outer wall of the bottom of the main parachute 100, and a delayed action for timely cutting off the circumferential closing rope 130. The device 140 connects the two ends of each radial closing rope 120 through the umbrella support 200, so that the middle part of each radial closing rope 120 passes through the closing ring 150 connected to the bottom of the main parachute 100, and the last radial closing rope 120 passes through the closing ring 150 and the main parachute 100 and is then sleeved on the circumferential closing rope 130. The middle part of each radial closing rope 120 after the first radial closing rope 120 passes through the closing ring 150 and is then sleeved on the middle part of the previous adjacent radial closing rope 120 passing through the closing ring 150, so that when the main parachute 100 is opened for descent, the main parachute 100 can be lowered to the lower ground. At the beginning of the inflation of the fall, the umbrella support 200 is stretched by the radial closing rope 120 to limit the size of the opening 110 at the bottom of the main parachute 100, and the circumferential closing rope 130 is used to limit the position of the outer wall of the main parachute 100, and the high-pressure air mass is controlled at the bottom edge of the canopy of the main parachute 100. When the main parachute 100 needs to be further expanded, the delay actuator 140 is controlled to cut off the circumferential closing rope 130, and the circumferential closing rope 130 stops limiting the position of the outer wall of the main parachute 100, and each radial closing rope 120 is sequentially loosened and stopped from stretching to limit the size of the opening 110 at the bottom of the main parachute 100. 0 falls off, the high-pressure air mass quickly enters and opens the bottom edge of the main parachute 100, the pressure at the bottom edge of the main parachute 100 is quickly built up, the air inlet of the canopy of the main parachute 100 is opened, and the airflow quickly opens the canopy from the bottom of the canopy, which can effectively prevent the air inlet of the canopy of the main parachute 100 from being disturbed by the airflow or other canopies during the inflation process; by arranging the radial closing rope 120, the umbrella strut 200 can be constrained at the air inlet position at the bottom opening 110 of the main parachute 100, and by arranging the circumferential closing rope 130, the umbrella strut 200 can be prevented from being affected by the airflow and shaking disorderly at the bottom edge of the canopy, resulting in failure.

[0036] In other optional embodiments, the umbrella support 200 may further include three or more support rings 210 arranged sequentially from the inside to the outside and a plurality of radiation strips 220 arranged at intervals along the circumference of the support ring 210; Figure 5 The umbrella strut 200 shown is composed of seven support rings 210 and twenty-four radiant strips 220 connected together.

[0037] 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 parachute closing control structure, characterized in that: The utility model comprises an umbrella strut arranged at the bottom opening of a main umbrella, N radial closing ropes arranged at intervals along the circumference of the umbrella strut, at least one circumferential closing rope sleeved on the outer wall of the bottom of the main umbrella, and a delay actuator for timing cutting off the circumferential closing rope. The bottom of the main umbrella is connected with a plurality of closing rings arranged at intervals along its circumference. Both ends of each radial closing rope are connected to the edge of the umbrella strut, and the middle part passes through a closing ring at the bottom of the main umbrella. The middle part of the last radial closing rope passes through the closing ring and the main umbrella and is then sleeved on the circumferential closing rope. The middle part of the Nth radial closing rope passes through the closing ring and is then sleeved on the middle part of the N-1th adjacent radial closing rope passing through the closing ring. N is a positive integer greater than or equal to 2.

2. The closing control structure of the parachute according to claim 1, characterized in that: The outer wall of the bottom of the main umbrella is connected with at least one closing rope protective sleeve extending along its circumference, and the circumferential closing rope passes through the closing rope protective sleeve.

3. The closing control structure of the parachute according to claim 1, characterized in that: The outer wall of the bottom of the main parachute is connected with an actuator protection cover which is sleeved on the time-delay actuator.

4. The closing control structure of a parachute according to claim 1, characterized in that: N is a positive integer greater than or equal to 10.

5. The closing control structure of a parachute according to claim 1, characterized in that: The umbrella support comprises at least a plurality of support rings arranged in sequence from the inside to the outside and a plurality of radiation strips arranged at intervals along the circumference of the support rings, and each of the radiation strips is connected to each of the support rings.

6. A method for controlling the closing of a parachute, characterized in that: The method is carried out using the closing control structure of the parachute as claimed in any one of claims 1 to 5, and comprises the following steps: Open the main parachute for landing, so that the parachute strut is stretched by radial closing ropes to limit the opening size of the bottom of the main parachute, and the position of the outer wall of the main parachute is limited by circumferential closing ropes; When the main parachute needs to be further opened, the delay actuator is controlled to cut off the circumferential closing rope to stop limiting the position of the outer wall of the main parachute, and each of the radial closing ropes is sequentially stopped from tensioning to limit the opening size of the bottom of the main parachute, so that the opening at the bottom of the main parachute is opened, and the airflow opens the canopy from the bottom of the main parachute.

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