Variable resistance area type parachute structure and parachute opening method

Abstract

The invention discloses a variable resistance area type parachute structure and a parachute opening method. The variable resistance area type parachute structure comprises a large parachute component, a small parachute component and a disengaging 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 in the center of the top in the large parachute canopy, and the large parachute canopy is connected with the first disengaging mechanism through the large parachute connecting rope; the small parachute canopy is connected with the separation mechanism connecting piece II through a small parachute connecting rope; the first disengaging mechanism connecting piece and the second disengaging mechanism connecting piece are connected with a disengaging mechanism used 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. Two parachutes with different areas needed in the air-drop process are combined into a whole, the weight and size of the parachute are reduced, the structure is simple, the working procedure is simplified, and economical efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of parachutes, and in particular to a variable resistance area parachute structure and a parachute opening method. Background Art

[0002] When using parachutes for airdropping supplies, due to the high speed of the aircraft, in order to ensure the work procedures and the safety of supplies, multi-stage parachutes of different sizes are generally used to work in an orderly manner to implement airdrops. Some working conditions require a smaller parachute to work first. After reaching certain working conditions, the small parachute is separated and the larger parachute is used to carry out the next working procedure. For example, when a missile is airdropped from an aircraft, it is sometimes necessary to use a small parachute to quickly descend and leave the wake area at the beginning, and then use a large parachute to slow down and land; some working conditions require a larger parachute to work first. After reaching certain working conditions, the large parachute is separated and the small parachute is used to carry out the next working procedure. For example, after airdropping, the large parachute is used to slow down and land first, and when the parachute reaches the predetermined area, the small parachute is replaced to quickly descend to avoid enemy attacks. In conventional designs, two types of parachutes are equipped, and they work in sequence according to the timing design. Each type of parachute needs to be equipped with a series of related components such as a corresponding parachute bag, connecting belt and separation mechanism. Equipping two types of parachutes at the same time will greatly increase the weight and volume of the parachute, and the parachute opening procedure will be complicated, and the working reliability will be reduced. Summary of the invention

[0003] The present invention provides a variable drag area parachute structure and a parachute opening method, which combine two parachutes of different areas required in an airdrop 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 in the present invention is:

[0005] A variable drag area parachute structure is provided, comprising a large umbrella component, a small umbrella component and a detachment mechanism; the large umbrella component comprises a large umbrella canopy and a large umbrella connecting rope, the small umbrella component comprises a small umbrella canopy and a small umbrella connecting rope, the small umbrella canopy is arranged at the top center part inside the large umbrella canopy, the large umbrella canopy is connected to a detachment mechanism connection piece 1 through the large umbrella connecting rope; the small umbrella canopy is connected to a detachment mechanism connection piece 2 through the small umbrella connecting rope; the detachment mechanism connection piece 1 and the detachment mechanism connection piece 2 are respectively connected to a detachment mechanism for changing the working state of the parachute, and the total length of the small umbrella component is not equal to the total length of the large umbrella component.

[0006] The parachute structure also includes a protective yarn and a large ring. The upper part of the protective yarn is connected to the bottom of the large umbrella canopy; the lower part of the protective yarn is gathered into a circle connected to the large ring; the protective yarn is in a cone shape.

[0007] According to the above solution, the protective yarn is provided with protective yarn reinforcement bands, and the protective yarn reinforcement bands are distributed at intervals along the circumferential direction of the protective yarn.

[0008] According to the above scheme, a connecting web is connected below the large circular ring, and a plurality of central rope limiting rings are vertically and sequentially spaced on the connecting web;

[0009] The small umbrella connecting rope comprises a central rope and a plurality of inner umbrella ropes, one ends of the plurality of inner umbrella ropes are respectively connected to the bottom of the small umbrella canopy, the connection points of 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 a point and are connected to one end of the central rope, and the other end of the central rope passes through a plurality of central rope limiting rings in sequence to connect to the second connector of the disengagement mechanism.

[0010] According to the above scheme, the large umbrella connecting rope includes multiple outer umbrella ropes, and multiple connecting width reinforcement belts are distributed on the connecting width at intervals along the circumferential direction of the connecting width. One ends of the multiple outer umbrella ropes are respectively connected to the bottom of the large umbrella canopy, and the connection points of the outer umbrella ropes and the large umbrella canopy are arranged at intervals along the circumferential direction of the large umbrella canopy, and the other ends are respectively connected to large rings; one end of the connecting width reinforcement belt is connected to the large ring, and the other end is connected to the separation mechanism connector one.

[0011] According to the above scheme, the disengagement mechanism is equipped with a time delay actuator or a GPS device for setting the time or landing height for changing the working state of the parachute.

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

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

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

[0015] Drop variable drag area parachutes;

[0016] The working procedure is started to inflate the parachute to generate an area corresponding to the resistance. When the working conditions are met, the corresponding separation mechanism connector is released, and the parachute resistance area is changed. The working conditions are specifically met as follows: reaching the set working time or landing height.

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

[0018] Set the parachute to have a total length of small parachute parts much longer than the total length of large parachute parts;

[0019] The variable drag area parachute is airdropped, and after the airdrop, the connecting rope of the large parachute is straightened to make the large parachute canopy fully open;

[0020] After a certain working condition is reached, the disengagement mechanism connector 1 is released, so that the large parachute connecting rope is released, the small parachute connecting rope is straightened and stressed, so that the small parachute canopy is fully inflated and the parachute resistance area is reduced.

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

[0022] Set the parachute so that the total length of the large parachute parts is much longer than the total length of the small parachute parts;

[0023] The variable drag area parachute is airdropped, and after the airdrop, the connecting rope of the small parachute is straightened to make the small parachute canopy fully inflated;

[0024] After certain working conditions are met, the second connector of the disengagement mechanism is released, so that the small parachute connecting rope is released, the large parachute connecting rope is straightened and stressed, so that the large parachute canopy is fully inflated and the parachute resistance area is increased.

[0025] The beneficial effects produced by the present invention are:

[0026] 1. The present invention arranges the small umbrella canopy at the top center part of the large umbrella canopy. When the working conditions are met, the disengagement mechanism releases the disengagement mechanism connector of the currently working corresponding area parachute, so that the connecting rope of the corresponding area parachute is released, and the area of ​​the parachute changes accordingly. The two parachutes of different areas required in the airdrop process are combined into one, which can reduce the weight and volume of the parachute, and the structure is relatively simple. The working order of the large umbrella and the small umbrella can be changed by changing the relative total length of the large umbrella component and the small umbrella component. The small umbrella can descend quickly when working, and the large umbrella can descend at a reduced speed when working, so as to meet the use requirements in different scenes. The present invention has wide applicability, simplifies the working procedure, and is highly economical.

[0027] 2. The present invention can set the time or landing height for changing the working state of the parachute by installing a delay actuator or a GPS device in the disengagement mechanism, so as to realize the user's intention of changing the working state of the parachute under specific working conditions according to actual conditions, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 It is a schematic diagram of the assembly relationship structure of the large circle in one embodiment of the present invention.

[0030] In the figure: 1-parachute canopy; 2-inner parachute rope; 3-center rope; 4-detachment mechanism connecting piece 2; 5-outer parachute rope; 6-protective yarn; 7-connecting width; 8-detachment mechanism connecting piece 1; 9-connecting width reinforcement belt; 10-center rope limiting ring; 11-large circular ring; 12-protective yarn reinforcement belt. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] like Figure 1 and Figure 2 As shown, the present invention provides a variable drag area parachute structure, comprising a large umbrella component, a small umbrella component and a detachment mechanism; the large umbrella component comprises a large umbrella canopy and a large umbrella connecting rope, the small umbrella component comprises a small umbrella canopy and a small umbrella connecting rope, the small umbrella canopy is arranged at the top center part inside the large umbrella canopy, the large umbrella canopy and the small umbrella canopy share the same canopy top, the specific area of ​​the small umbrella canopy occupied by the large umbrella canopy is determined by the use conditions, the large umbrella canopy is connected to a detachment mechanism connection piece 1 through the large umbrella connecting rope; the small umbrella canopy is connected to a detachment mechanism connection piece 2 through the small umbrella connecting rope; the detachment mechanism connection piece 1 and the detachment mechanism connection piece 2 are respectively connected to the detachment mechanism for changing the working state of the parachute, and the total length of the small umbrella component is not equal to the total length of the large umbrella component.

[0033] Among them, the total length of the large umbrella component and the small umbrella component is determined according to the working order of the large umbrella and the small umbrella. When the large umbrella starts the working procedure 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 the working procedure 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 strip. The upper part of the protective yarn is connected to the bottom of the large umbrella canopy; the lower part of the protective yarn converges into a circle to connect to the large ring; the connecting strip is connected below the large ring, and a plurality of central rope limiting rings arranged vertically in sequence are sewn on the connecting strip; the disengagement mechanism is also equipped with a time delay actuator or a GPS device for setting the time or landing height of changing the working state of the parachute. Among them, the protective yarn is in a cone shape and contains a protective yarn reinforcement belt, which is distributed at intervals along the circumference of the protective yarn.

[0035] Among them, the large umbrella connecting rope includes a plurality of outer umbrella ropes, and a plurality of connecting width reinforcement belts are distributed at intervals along the circumferential direction of the connecting width on the connecting width, one ends of the plurality of outer umbrella ropes are respectively connected to the bottom of the large umbrella canopy, the connection points of the outer umbrella ropes and the large umbrella canopy are arranged at intervals along the circumferential direction of the large umbrella canopy, and the other ends are connected to the large circular ring; one end of the connecting width reinforcement belt is connected to the large circular ring, and the other end is connected to the detachment mechanism connector 1; the small umbrella connecting rope includes a central rope and a plurality of inner umbrella ropes, one ends of the plurality of inner umbrella ropes are respectively connected to the bottom of the small umbrella canopy, the connection points of the inner umbrella ropes and the small umbrella canopy are arranged at intervals along the circumferential direction of the small umbrella canopy, and the other ends converge at one point and are connected to one end of the central rope, and the other end of the central rope passes through a plurality of central rope limiting rings in sequence to connect to the detachment mechanism connector 2.

[0036] In a preferred embodiment of the present invention, the upper part of the protective yarn and the bottom of the large umbrella canopy, the protective yarn and the protective yarn reinforcement band, the inner umbrella rope and the bottom of the small umbrella canopy, the outer umbrella rope and the bottom of the large umbrella canopy, the connecting web and the connecting web reinforcement band are connected by sewing.

[0037] In the present invention, the number of the detachment mechanism connector 1, the detachment mechanism connector 2, the center rope limiting ring, the protective yarn reinforcement belt, and the connecting width reinforcement belt can be changed according to the use intensity of the parachute; in this embodiment, the parachute is installed with two detachment mechanism connectors 1, one detachment mechanism connector 2, three center rope limiting rings, four protective yarn reinforcement belts and two connecting width reinforcement belts.

[0038] The invention changes the total length of different umbrella parts installed on the parachute canopy, changes the working order of the large umbrella and the small umbrella, and changes the working state of the parachute by releasing the separation mechanism connecting piece through the separation mechanism.

[0039] When the big parachute is needed to start the working procedure first, the parachute is set so that the total length of the small parachute parts is much larger than the total length of the big parachute parts. After the airdrop, the parachute opens. Since the total length of the small parachute parts is too long, the connecting rope of the big parachute is straightened first, and the canopy of the big parachute is fully inflated. At this time, the parachute is worked by the big parachute; when the working conditions are met, the disengagement mechanism releases the disengagement mechanism connector one, and the connection between the outer parachute rope and the large ring is released, so that the outer parachute rope is released. Due to the effect of the protective yarn, the outer parachute rope can be still surrounded by the protective yarn after being released to avoid interference with the outside world. The connecting rope of the small parachute is straightened and stressed, so that the canopy of the small parachute is fully inflated, and the resistance area is reduced. At this time, the parachute is worked by the small parachute.

[0040] When the small parachute is needed to start the working procedure first, the parachute is set so that the total length of the large parachute parts is much larger than the total length of the small parachute parts. After the airdrop, the parachute opens. Since the total length of the large parachute parts is too long, the small parachute connecting rope is straightened first, and the small parachute canopy is fully inflated. At this time, the parachute is performed by the small parachute; when the working conditions are met, the disengagement mechanism releases the disengagement mechanism connector 2, releases the restriction of the center rope restriction ring on the connecting width, releases the center rope and the inner parachute rope, and the large parachute connecting rope is straightened and stressed, so that the large parachute canopy is fully inflated, and the resistance area is increased. At this time, the parachute is performed by the large parachute.

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

[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 parts and small umbrella parts of corresponding lengths according to the working order of the large umbrella and the small umbrella;

[0044] Drop variable drag area parachutes;

[0045] The working procedure is started to inflate the parachute to generate an area corresponding to the resistance. When the working conditions are met, the corresponding separation mechanism connector is released, and the parachute resistance area is changed. The working conditions are specifically met as follows: reaching the set working time or landing height.

[0046] Specifically, when the large umbrella works first, the method of opening the umbrella includes:

[0047] Set the parachute to have a total length of small parachute parts much longer than the total length of large parachute parts;

[0048] The variable drag area parachute is airdropped, and after the airdrop, the connecting rope of the large parachute is straightened to make the large parachute canopy fully open;

[0049] After a certain working condition is reached, the disengagement mechanism connector 1 is released, so that the large parachute connecting rope is released, the small parachute connecting rope is straightened and stressed, so that the small parachute canopy is fully inflated and the parachute resistance area is reduced.

[0050] Specifically, when the small umbrella works first, the umbrella opening method includes:

[0051] Set the parachute so that the total length of the large parachute parts is much longer than the total length of the small parachute parts;

[0052] The variable drag area parachute is airdropped, and after the airdrop, the connecting rope of the small parachute is straightened to make the small parachute canopy fully inflated;

[0053] After certain working conditions are met, the second connector of the disengagement mechanism is released, so that the small parachute connecting rope is released, the large parachute connecting rope is straightened and stressed, so that the large parachute canopy is fully inflated and the parachute resistance area is increased.

[0054] The present invention provides a variable resistance area parachute structure and a parachute opening method. The present invention arranges the small umbrella canopy at the top center part of the large umbrella canopy. When the working condition is met, the separation mechanism releases the separation mechanism connecting piece of the parachute of the corresponding area currently working, so that the connecting rope of the parachute of the corresponding area is released, and the area of ​​the parachute changes accordingly. The two parachutes of different areas required in the airdrop process are combined into one, which can reduce the weight and volume of the parachute. The structure is relatively simple, and the working order of the large umbrella and the small umbrella can be changed by changing the relative total length of the large umbrella component and the small umbrella component. The small umbrella can be quickly descended when working, and the large umbrella can be decelerated when working, so as to meet the use requirements in different scenes. The present invention has wide applicability, simplifies the working procedure, has high economic efficiency, is suitable for large-scale promotion and use, provides new ideas for the development and design of subsequent products, and has high social benefits. At the same time, the present invention installs a time delay actuator or a GPS device on the separation mechanism, so that the time or landing height of changing the working state of the parachute can be set, which is convenient for realizing the intention of the user to change the working state of the parachute under specific working conditions according to actual conditions, and has good practicality.

[0055] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0056] The order of execution of each step in the above embodiment does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

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

Claims

1. A variable drag area parachute structure, characterized in that: It includes a large umbrella component, a small umbrella component and a detachment mechanism; the large umbrella component includes a large umbrella canopy and a large umbrella connecting rope, the small umbrella component includes a small umbrella canopy and a small umbrella connecting rope, the small umbrella canopy is arranged at the top center part of the large umbrella canopy, the large umbrella canopy is connected to a detachment mechanism connection piece 1 through the large umbrella connecting rope; the small umbrella canopy is connected to a detachment mechanism connection piece 2 through the small umbrella connecting rope; the detachment mechanism connection piece 1 and the detachment mechanism connection piece 2 are respectively connected to a detachment mechanism for changing the working state of the parachute, and the total length of the small umbrella component is not equal to the total length of the large umbrella component.

2. A variable drag area parachute structure according to claim 1, characterized in that: The parachute structure also includes a protective yarn and a large ring. The upper part of the protective yarn is connected to the bottom of the large umbrella canopy; the lower part of the protective yarn gathers into a circle connected to the large ring; the protective yarn is in a cone shape.

3. A variable drag area parachute structure according to claim 2, characterized in that: The protective yarn is provided with protective yarn reinforcement bands, and the protective yarn reinforcement bands are distributed at intervals along the circumferential direction of the protective yarn.

4. A variable drag area parachute structure according to claim 3, characterized in that: A connecting web is connected below the large circular ring, and a plurality of center rope limiting rings are vertically and sequentially spaced on the connecting web; The small umbrella connecting rope comprises a central rope and a plurality of inner umbrella ropes, one ends of the plurality of inner umbrella ropes are respectively connected to the bottom of the small umbrella canopy, the connection points of 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 a point and are connected to one end of the central rope, and the other end of the central rope passes through a plurality of central rope limiting rings in sequence to connect to the second connector of the disengagement mechanism.

5. A variable drag area parachute structure according to claim 4, characterized in that: The large umbrella connecting rope comprises a plurality of outer umbrella ropes, and a plurality of connecting width reinforcement belts are distributed at intervals along the circumferential direction of the connecting width on the connecting width. One ends of the plurality of outer umbrella ropes are respectively connected to the bottom of the large umbrella canopy, and the connection points of the outer umbrella ropes and the large umbrella canopy are arranged at intervals along the circumferential direction of the large umbrella canopy, and the other ends are respectively connected to large circular rings; one end of the connecting width reinforcement belt is connected to the large circular ring, and the other end is connected to the first connection piece of the separation mechanism.

6. A variable drag area parachute structure according to claim 1, characterized in that: The disengagement mechanism is equipped with a time delay actuator or a GPS device for setting the time or landing height for changing the working state of the parachute.

7. A variable drag area parachute structure according to claim 5, characterized in that: The upper part of the protective yarn and the bottom of the large umbrella canopy, the protective yarn and the protective yarn reinforcement belt, the inner umbrella rope and the bottom of the small umbrella canopy, the outer umbrella rope and the bottom of the large umbrella canopy, the connecting width and the connecting width reinforcement belt are connected by sewing; the large umbrella canopy and the small umbrella canopy share the same canopy top.

8. A method for opening a variable drag area parachute, characterized in that: The method comprises: Install the large umbrella parts and small umbrella parts of corresponding lengths according to the working order of the large umbrella and the small umbrella; Drop variable drag area parachutes; The working procedure is started to inflate the parachute to generate an area corresponding to the resistance. When the working conditions are met, the corresponding separation mechanism connector is released, and the parachute resistance area is changed. The working conditions are specifically met as follows: reaching the set working time or landing height.

9. A method for opening a variable drag area parachute according to claim 8, characterized in that: When the big umbrella works first, the opening method includes: Set the parachute to have a total length of small parachute parts much longer than the total length of large parachute parts; The variable drag area parachute is airdropped, and after the airdrop, the connecting rope of the large parachute is straightened to make the large parachute canopy fully open; After a certain working condition is reached, the disengagement mechanism connector 1 is released, so that the large parachute connecting rope is released, the small parachute connecting rope is straightened and stressed, so that the small parachute canopy is fully inflated and the parachute resistance area is reduced.

10. The method for opening a variable drag area parachute according to claim 8, characterized in that: When the small umbrella works first, the opening method includes: Set the parachute so that the total length of the large parachute parts is much longer than the total length of the small parachute parts; The variable drag area parachute is airdropped, and after the airdrop, the connecting rope of the small parachute is straightened to make the small parachute canopy fully inflated; After certain working conditions are met, the second connector of the disengagement mechanism is released, so that the small parachute connecting rope is released, the large parachute connecting rope is straightened and stressed, so that the large parachute canopy is fully inflated and the parachute resistance area is increased.

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