Variable drag area parachute configuration and deployment method

Abstract

The application discloses a variable resistance area type parachute structure and a parachute opening method, which comprises a large parachute component, a small parachute component and a separation mechanism; the large parachute component comprises a large parachute canopy and a large parachute connecting rope; the small parachute component comprises a small parachute canopy and a small parachute connecting rope; the small parachute canopy is arranged at the top center part of the large parachute canopy; the large parachute canopy is connected with the separation mechanism through the large parachute connecting rope; the small parachute canopy is connected with the separation mechanism through the small parachute connecting rope; the separation mechanism connector one and the separation mechanism connector two are respectively connected with the separation mechanism for changing the working state of the parachute; and the total length of the small parachute component is not equal to the total length of the large parachute component. The application combines two different area parachutes required in the air drop process into one, reduces the weight and volume of the parachute, and has a relatively simple structure, which simplifies the working procedure and is high in economy.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of parachutes, in particular to a variable resistance area parachute structure and parachute opening method. BACKGROUND

[0002] When air-dropping materials using parachutes, in order to ensure the work procedure and the safety of the materials, multi-stage parachutes with different areas are generally used to implement the air-drop in sequence. In some working conditions, a parachute with a small area is required to work first, and after a certain working condition is reached, the small parachute is separated and a parachute with a larger area is used to implement the next working procedure. For example, when a missile is air-dropped from an airplane, sometimes a small parachute is used to quickly descend and leave the wake zone at the beginning, and then a large parachute is used to slow down and descend. In some working conditions, a parachute with a large area is required to work first, and after a certain working condition is reached, the large parachute is separated and a small parachute is used to implement the next working procedure. For example, after air-dropping, a large parachute is used to slow down and descend, and when the parachute reaches a certain area, a small parachute is used to quickly descend to avoid enemy attacks. In conventional designs, two parachutes with different areas are equipped and used in sequence. Each parachute with a certain area needs to be equipped with corresponding parachute bags, connecting belts, separation mechanisms and a series of related components. Meanwhile, the use of two parachutes with different areas greatly increases the weight and volume of the parachutes, and the parachute opening procedure is complicated, which reduces the working reliability. SUMMARY

[0003] The present application provides a variable resistance area parachute structure and parachute opening method, which combines two parachutes with different areas required in the air-drop process into one, thereby reducing the weight and volume of the system and simplifying the working procedure.

[0004] To this end, the technical solution adopted by the present application is as follows:

[0005] A variable resistance area parachute structure is provided, which comprises a large parachute component, a small parachute component and a separation mechanism. The large parachute component comprises a large parachute canopy and a large parachute connecting rope, the small parachute component comprises a small parachute canopy and a small parachute connecting rope, the small parachute canopy is arranged at the top center part of the large parachute canopy, the large parachute canopy is connected to a first connecting part of the separation mechanism through the large parachute connecting rope, and the small parachute canopy is connected to a second connecting part of the separation mechanism through the small parachute connecting rope. The first connecting part and the second connecting part of the separation mechanism are respectively connected to the separation mechanism for changing the working state of the parachute. The total length of the small parachute component is not equal to the total length of the large parachute component.

[0006] The parachute structure further comprises a protective yarn and a large circular ring. The upper part of the protective yarn is connected to the bottom of the large parachute canopy, and the lower part of the protective yarn converges into a ring to connect the large circular ring. The protective yarn is in the shape of a truncated cone.

[0007] According to the above scheme, the protective yarn is provided with a protective yarn reinforcing belt, and the protective yarn reinforcing belt is distributed along the circumference of the protective yarn.

[0008] According to the above scheme, a connecting span is connected below the large circular ring, and multiple central rope limiting rings are vertically and sequentially distributed on the connecting span;

[0009] The small umbrella connecting rope includes a central rope and multiple inner umbrella ropes. One end of each inner umbrella rope is connected to the bottom of the small umbrella canopy. The connection points between the inner umbrella ropes and the small umbrella canopy are arranged at intervals along the circumference of the small umbrella canopy. The other ends of the inner umbrella ropes converge at one point and connect to one end of the central rope. The other end of the central rope passes through multiple central rope limiting rings in sequence and connects to the second disconnection mechanism connector.

[0010] According to the above scheme, the large umbrella connecting rope includes multiple outer umbrella ropes, and multiple connecting reinforcing strips are distributed at intervals along the circumference of the connecting width. One end of each of the multiple outer umbrella ropes is connected to the bottom of the large umbrella canopy. The connection points between the outer umbrella ropes and the large umbrella canopy are arranged at intervals along the circumference of the large umbrella canopy. The other end is connected to a large circular ring. One end of the connecting reinforcing strip is connected to the large circular ring, and the other end is connected to the first disconnecting mechanism connector.

[0011] According to the above scheme, the detachment mechanism is equipped with a time delay actuator or a GPS device to set the time for changing the parachute's working state or the descent altitude.

[0012] According to the above scheme, the upper part of the protective yarn is connected to the bottom of the large umbrella canopy, the protective yarn is connected to the protective yarn reinforcing strip, the inner umbrella rope is connected to the bottom of the small umbrella canopy, the outer umbrella rope is connected to the bottom of the large umbrella canopy, and the connecting strip and the connecting strip reinforcing strip are connected by sewing; the large umbrella canopy and the small umbrella canopy share the same top of the umbrella canopy.

[0013] A method for deploying a variable drag area parachute is provided, the method comprising:

[0014] Install the large umbrella components and small umbrella components of the corresponding lengths according to the working sequence of the large umbrella and small umbrella;

[0015] Airdropping a variable drag area parachute;

[0016] The working procedure is initiated, causing the parachute to inflate and generate a corresponding area of ​​resistance. When the working conditions are met, the corresponding release mechanism connector is released, and the parachute resistance area changes. Specifically, the working conditions are: reaching the set working time or landing altitude.

[0017] According to the above plan, when the large umbrella works first, the opening method includes:

[0018] The parachute is designed such that the total length of the smaller parachute component is much greater than the total length of the larger parachute component.

[0019] The variable drag area parachute is airdropped. After the airdrop, the connecting rope of the large parachute is straightened, so that the canopy of the large parachute is fully inflated.

[0020] After certain working conditions are met, the release mechanism connector 1 is released, causing the large parachute connecting rope to be released and the small parachute connecting rope to be straightened and stressed, causing the small parachute canopy to fully inflate and reducing the drag area of ​​the parachute.

[0021] According to the above plan, when the small umbrella works first, the opening method includes:

[0022] The parachute is designed such that the total length of the large parachute component is much greater than the total length of the small parachute component;

[0023] The variable drag area parachute is airdropped. After airdrop, the connecting rope of the small parachute is straightened so that the canopy of the small parachute is fully inflated.

[0024] After certain working conditions are met, the second disconnector is released, causing the small parachute connecting rope to be released and the large parachute connecting rope to be straightened and stressed, causing the large parachute canopy to fully inflate and increasing the drag area of ​​the parachute.

[0025] The beneficial effects of this invention are:

[0026] 1. This invention uses a small parachute canopy located at the top center of the large parachute canopy. When working conditions are met, the release mechanism releases the release mechanism connector of the parachute corresponding to the current working area, causing the connecting rope of the corresponding area parachute to be released, thus changing the parachute area. This combines two different areas of parachutes required during airdrop into one, reducing the weight and volume of the parachute. The structure is also relatively simple. The working order of the large and small parachutes can be changed by altering the relative total length of the large and small parachute components. The small parachute can descend quickly when working, while the large parachute can descend slowly when working, meeting the needs of different scenarios. This invention has wide applicability, simplifies the working procedure, and is highly economical.

[0027] 2. By installing a delay actuator or GPS device on the disengagement mechanism, the present invention can set the time or descent altitude for changing the working state of the parachute, which is convenient for users to change the working state of the parachute under specific working conditions according to actual conditions, and has good practicality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a parachute structure according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the assembly relationship structure at the large ring in an embodiment of the present invention.

[0030] In the diagram: 1-canopy; 2-inner paracord; 3-center cord; 4-detachment mechanism connector 2; 5-outer paracord; 6-protective yarn; 7-connecting width; 8-detachment mechanism connector 1; 9-connecting width reinforcement band; 10-center cord limiting ring; 11-large ring; 12-protective yarn reinforcement band. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] like Figure 1 and Figure 2 As shown, this invention provides a variable drag area parachute structure, including a large parachute component, a small parachute component, and a release mechanism. The large parachute component includes a large parachute canopy and a large parachute connecting rope, and the small parachute component includes a small parachute canopy and a small parachute connecting rope. The small parachute canopy is located in the top center of the large parachute canopy. The large and small parachute canopies share the same top of the canopy. The specific area occupied by the small parachute canopy in the large parachute canopy is determined by the operating conditions. The large parachute canopy is connected to a release mechanism connection one via the large parachute connecting rope. The small parachute canopy is connected to a release mechanism connection two via the small parachute connecting rope. The release mechanism connection one and release mechanism connection two are respectively connected to a release mechanism used to change the parachute's operating state. The total length of the small parachute component is not equal to the total length of the large parachute component.

[0033] The total length of the large umbrella component and the small umbrella component is determined by the working order of the large umbrella and the small umbrella. When the large umbrella starts its working program first, the total length of the small umbrella component is much greater than the total length of the large umbrella component; when the small umbrella starts its working program first, the total length of the large umbrella component is much greater than the total length of the small umbrella component.

[0034] In addition, the parachute structure of the present invention also includes a protective yarn, a large ring, and a connecting web. The upper part of the protective yarn is connected to the bottom of the large parachute canopy; the lower part of the protective yarn converges into a loop and connects to the large ring; a connecting web is connected below the large ring, and multiple center rope restraint rings arranged vertically in sequence are sewn onto the connecting web; the release mechanism is also equipped with a time delay actuator or a GPS device for setting the time for changing the parachute's working state or the descent altitude. The protective yarn is frustoconical in shape and contains reinforcing strips that are spaced apart circumferentially along the protective yarn.

[0035] The large umbrella connecting rope includes multiple outer umbrella ropes, with multiple reinforcing strips distributed circumferentially along the connecting width. One end of each outer umbrella rope is connected to the bottom of the large umbrella canopy, and the connection points between the outer umbrella ropes and the large umbrella canopy are arranged circumferentially along the large umbrella canopy. The other end is connected to a large circular ring. One end of each reinforcing strip is connected to the large circular ring, and the other end is connected to the first disconnection mechanism connector. The small umbrella connecting rope includes a central rope and multiple inner umbrella ropes. One end of each inner umbrella rope is connected to the bottom of the small umbrella canopy, and the connection points between the inner umbrella ropes and the small umbrella canopy are arranged circumferentially along the small umbrella canopy. The other ends converge at one point and connect to one end of the central rope. The other end of the central rope passes through multiple central rope limiting rings in sequence and connects to the second disconnection mechanism connector.

[0036] In a preferred embodiment of the present invention, the upper part of the protective yarn is connected to the bottom of the large umbrella canopy, the protective yarn is connected to the protective yarn reinforcing tape, the inner umbrella cord is connected to the bottom of the small umbrella canopy, the outer umbrella cord is connected to the bottom of the large umbrella canopy, the connecting strip and the connecting strip reinforcing tape are connected by sewing.

[0037] In this invention, the number of release mechanism connector one, release mechanism connector two, center rope limiting ring, protective yarn reinforcing belt, and connecting width reinforcing belt can be changed according to the usage intensity of the parachute; in this embodiment, the parachute is equipped with two release mechanism connectors one, one release mechanism connector two, three center rope limiting rings, four protective yarn reinforcing belts, and two connecting width reinforcing belts.

[0038] This invention changes the working sequence of the large and small parachutes by altering the total length of the different parachute components installed on the parachute canopy, and changes the working state of the parachute by releasing the disconnect mechanism connector through the disconnect mechanism.

[0039] When the large parachute needs to initiate the working procedure first, the total length of the small parachute component is set to be much greater than that of the large parachute component. After the airdrop, the parachute opens. Due to the excessive length of the small parachute component, the large parachute connecting ropes straighten first, and the large parachute canopy fully inflates. At this time, the large parachute performs the work. When the working conditions are met, the release mechanism releases the first release mechanism connector, disconnecting the outer parachute ropes from the large ring, allowing the outer parachute ropes to be released. Due to the protective mesh, the released outer parachute ropes remain inside the protective mesh, preventing interference with the outside environment. The small parachute connecting ropes straighten and are under stress, causing the small parachute canopy to fully inflate, reducing the drag area. At this time, the small parachute performs the work.

[0040] When the small parachute needs to initiate the working procedure first, the total length of the large parachute component is set to be much greater than that of the small parachute component. After the airdrop, the parachute opens. Due to the excessive length of the large parachute component, the small parachute connecting rope is straightened first, and the small parachute canopy is fully inflated. At this time, the small parachute performs the work. When the working conditions are met, the release mechanism releases the second release mechanism connector, removes the restriction ring on the center rope on the connecting span, and releases the center rope and inner parachute rope. The large parachute connecting rope is straightened and subjected to force, causing the large parachute canopy to fully inflate and increasing the drag area. At this time, the large parachute performs the work.

[0041] In a preferred embodiment of the present invention, the working condition is specifically: the parachute reaches the set working time or landing altitude.

[0042] In addition, the present invention also provides a method for opening a variable drag area parachute, the method comprising:

[0043] Install the large umbrella components and small umbrella components of the corresponding lengths according to the working sequence of the large umbrella and small umbrella;

[0044] Airdropping a variable drag area parachute;

[0045] The working procedure is initiated, causing the parachute to inflate and generate a corresponding area of ​​resistance. When the working conditions are met, the corresponding release mechanism connector is released, and the parachute resistance area changes. Specifically, the working conditions are: reaching the set working time or landing altitude.

[0046] Specifically, when the large umbrella is activated first, the methods for opening the umbrella include:

[0047] The parachute is designed such that the total length of the smaller parachute component is much greater than the total length of the larger parachute component.

[0048] The variable drag area parachute is airdropped. After the airdrop, the connecting rope of the large parachute is straightened, so that the canopy of the large parachute is fully inflated.

[0049] After certain working conditions are met, the release mechanism connector 1 is released, causing the large parachute connecting rope to be released and the small parachute connecting rope to be straightened and stressed, causing the small parachute canopy to fully inflate and reducing the drag area of ​​the parachute.

[0050] Specifically, when the small umbrella works first, the methods for opening the umbrella include:

[0051] The parachute is designed such that the total length of the large parachute component is much greater than the total length of the small parachute component;

[0052] The variable drag area parachute is airdropped. After airdrop, the connecting rope of the small parachute is straightened so that the canopy of the small parachute is fully inflated.

[0053] After certain working conditions are met, the second disconnector is released, causing the small parachute connecting rope to be released and the large parachute connecting rope to be straightened and stressed, causing the large parachute canopy to fully inflate and increasing the drag area of ​​the parachute.

[0054] This invention provides a variable drag area parachute structure and deployment method. The invention utilizes a small parachute canopy located at the top center of a large parachute canopy. When working conditions are met, a release mechanism releases the release mechanism connector of the parachute corresponding to the current working area, releasing the connecting rope of the corresponding area parachute and thus changing the parachute area. This combines two parachutes of different areas required for airdrops into one, reducing the weight and volume of the parachute. The structure is relatively simple, and the working order of the large and small parachutes can be changed by altering their relative total length. The small parachute descends rapidly when operational, while the large parachute descends at a slower pace, meeting the needs of different scenarios. This invention has wide applicability, simplifies the working procedure, and is highly economical, making it suitable for widespread use. It provides new ideas for the development and design of subsequent products and has significant social benefits. Furthermore, by installing a delay actuator or GPS device in the release mechanism, the time or descent altitude for changing the parachute's working state can be set, allowing users to adjust the parachute's working state according to specific working conditions, demonstrating excellent practicality.

[0055] It should be noted that, depending on the implementation needs, the various steps / components described in this application can be broken down into more steps / components, or two or more steps / components or parts of the operation of steps / components can be combined into new steps / components to achieve the purpose of this invention.

[0056] The order of the steps in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0057] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A variable drag area parachute structure, characterized in that, The system includes a large parachute component, a small parachute component, and a release mechanism. The large parachute component includes a large parachute canopy and a large parachute connecting rope. The small parachute component includes a small parachute canopy and a small parachute connecting rope. The small parachute canopy is located inside the top center of the large parachute canopy. The large parachute canopy is connected to a first release mechanism connector via the large parachute connecting rope. The small parachute canopy is connected to a second release mechanism connector via the small parachute connecting rope. The first and second release mechanism connectors are respectively connected to a release mechanism used to change the working state of the parachute. The total length of the small parachute component is not equal to the total length of the large parachute component. The parachute structure also includes a protective mesh and a large ring. The upper part of the protective mesh is connected to the bottom of the large parachute canopy; the lower part of the protective mesh converges into a loop and connects to the large ring; the protective mesh is truncated cone-shaped. The protective yarn is provided with reinforcing strips, which are spaced apart along the circumference of the protective yarn. Below the large circular ring is a connecting span, on which multiple central rope limiting rings are vertically spaced. The small umbrella connecting rope includes a central rope and multiple inner umbrella ropes. One end of each inner umbrella rope is connected to the bottom of the small umbrella canopy. The connection points between the inner umbrella ropes and the small umbrella canopy are arranged at intervals along the circumference of the small umbrella canopy. The other ends of the inner umbrella ropes converge at one point and connect to one end of the central rope. The other end of the central rope passes through multiple central rope limiting rings in sequence and connects to the second disconnection mechanism connector. The large umbrella connecting rope includes multiple outer umbrella ropes, and multiple connecting reinforcing strips are distributed at intervals along the circumference of the connecting width. One end of each of the multiple outer umbrella ropes is connected to the bottom of the large umbrella canopy. The connection points between the outer umbrella ropes and the large umbrella canopy are arranged at intervals along the circumference of the large umbrella canopy. The other end is connected to a large circular ring. One end of the connecting reinforcing strip is connected to the large circular ring, and the other end is connected to the first disconnecting mechanism connector. The upper part of the protective yarn is connected to the bottom of the large umbrella canopy, the protective yarn is connected to the protective yarn reinforcing strip, the inner umbrella rope is connected to the bottom of the small umbrella canopy, the outer umbrella rope is connected to the bottom of the large umbrella canopy, and the connecting strip and the connecting strip reinforcing strip are connected by sewing; the large umbrella canopy and the small umbrella canopy share the same top of the umbrella canopy.

2. The variable drag area parachute structure according to claim 1, characterized in that, The release mechanism is equipped with a time delay actuator or a GPS device for setting the time to change the parachute's working state or the descent altitude.

3. A method for deploying a variable drag area parachute, characterized in that, The parachute deployment method is applied to a variable drag area parachute structure according to any one of claims 1 or 2, and the method includes: Install the large umbrella components and small umbrella components of the corresponding lengths according to the working sequence of the large umbrella and small umbrella; Airdropping a variable drag area parachute; The working procedure is initiated, causing the parachute to inflate and generate a corresponding area of ​​resistance. When the working conditions are met, the corresponding release mechanism connector is released, and the parachute resistance area changes. Specifically, the working conditions are: reaching the set working time or landing altitude.

4. The method for deploying a variable drag area parachute according to claim 3, characterized in that, When the large umbrella starts working, the opening methods include: The parachute is designed such that the total length of the smaller parachute component is much greater than the total length of the larger parachute component. The variable drag area parachute is airdropped. After the airdrop, the connecting rope of the large parachute is straightened, so that the canopy of the large parachute is fully inflated. After certain working conditions are met, the release mechanism connector 1 is released, causing the large parachute connecting rope to be released and the small parachute connecting rope to be straightened and stressed, causing the small parachute canopy to fully inflate and reducing the drag area of ​​the parachute.

5. The method for deploying a variable drag area parachute according to claim 3, characterized in that, When the small umbrella starts working, the opening methods include: The parachute is designed such that the total length of the large parachute component is much greater than the total length of the small parachute component; The variable drag area parachute is airdropped. After airdrop, the connecting rope of the small parachute is straightened, causing the small parachute canopy to fully inflate. After certain working conditions are met, the second detachment mechanism connector is released, causing the connecting rope of the small parachute to be released, and the connecting rope of the large parachute to be straightened and stressed, causing the large parachute canopy to fully inflate, thus increasing the drag area of ​​the parachute.

Images