A load-reducing and stable descent parachute and a parachute load-reducing method

Abstract

A load-reducing and stabilized descent parachute and a parachute load-reducing method relate to the field of parachutes. The load-reducing and stabilized descent parachute comprises a parachute canopy and multiple parachute lines connected at the top to the bottom of the canopy. The canopy is provided with multiple canopy slits, and the canopy is connected to a slit closing assembly corresponding to each canopy slit. The slit closing assembly is used to close the corresponding canopy slits during the canopy inflation process. The load-reducing and stabilized descent parachute and parachute load-reducing method provided in this application enable the parachute canopy to have different canopy air permeabilities during the parachute opening process and the stabilized descent process, thereby reducing the impact force of the parachute opening and increasing the system resistance characteristic value during the stabilized descent. This achieves the purpose of reducing the parachute opening overload during the system opening process and increasing the resistance during the stabilized descent process by closing the canopy slits, thereby achieving a safe landing.

Description

Technical Field

[0001] The present application relates to the field of parachutes, and in particular to a load-reducing and stabilized descent parachute and a parachute load-reducing method. Background Art

[0002] The parachute opening process is an instantaneous explosive process. In order to reduce the speed of the object being dropped instantly, a large reverse force needs to be generated between the parachute and the dropped object. This large force not only easily causes the parachute to be damaged instantly, but also causes the airdropped materials to be damaged by unbearable impact overload. Therefore, during the parachute opening process, the relative speed between it and the dropped object should be reduced as much as possible, so that the relative impact force becomes soft and acceptable.

[0003] Currently, multi-stage parachutes are often used to reduce the relative speed between the parachute and the dropped object by gradually decelerating the parachute. However, each stage of the parachute loses its function after completing its relative mission, which not only increases the complexity of the parachute system, but also increases the cost of the parachute system.

[0004] Therefore, a parachute and a parachute load reduction method that can reduce the impact of parachute opening and have a simple use method and low cost are needed. Summary of the Invention

[0005] The purpose of this application is to provide a load-reducing and stabilized descent parachute and a parachute load-reducing method, which enables the parachute canopy to have different canopy air permeabilities during the parachute opening process and the stabilized descent process, can reduce the impact force of the parachute opening when opening the parachute and increase the system resistance characteristic value during the stabilized descent, thereby achieving the purpose of safe landing of the system.

[0006] The embodiment of the present application is implemented as follows:

[0007] An embodiment of the present application provides a load-reducing and stabilized descent parachute, which includes a parachute canopy and multiple ropes with the tops connected to the bottoms of the parachute canopy. The parachute canopy is provided with multiple canopy slits, and the parachute canopy is connected to slit closing components corresponding to the canopy slits one by one. The slit closing components are used to close the corresponding canopy slits during the inflation process of the parachute canopy.

[0008] In some optional embodiments, the slit closing assembly includes a first connecting strap, a second connecting strap, an upper guide ring, a lower guide ring, multiple tightening rings and at least one fixing line, the upper guide ring and the lower guide ring are respectively fixed above and below the corresponding canopy slit, and the multiple tightening rings are respectively fixed on both sides of the corresponding canopy slit; one end of the first connecting strap is connected to the upper guide ring, and the other end alternately passes through the tightening rings on both sides of the canopy slit and then passes through the lower guide ring to be connected to an umbrella rope; one end of the second connecting strap is connected to the upper guide ring, and the other end passes through the lower guide ring to be connected to the first connecting strap, the middle part of the second connecting strap is bent to form at least one bent portion, and the fixed line fixes the bent portion to the parachute canopy, and when the parachute canopy is inflated, the fixed line is pulled apart to tighten and close the corresponding canopy slit.

[0009] In some optional embodiments, the length of the second connecting belt is less than the length of the first connecting belt before the fixing line is broken at the sewing position, and the length of the second connecting belt is equal to the length of the first connecting belt after the fixing line is broken.

[0010] In some optional embodiments, the parachute line is connected to a parachute line fixing ring connected to the first connecting strap and the second connecting strap.

[0011] In some optional embodiments, the middle portion of the second connecting belt is bent to form at least one V-shaped or S-shaped bending portion.

[0012] In some optional embodiments, the plurality of canopy slits are arranged in at least one circle, and the canopy slits in each circle are spaced apart along the circumference of the parachute canopy.

[0013] The present application also provides a parachute load reduction method, which comprises the following steps:

[0014] A plurality of canopy slits and slit closing components corresponding to the canopy slits are arranged on the parachute canopy;

[0015] During the parachute canopy inflation process, the slit closing assembly closes the corresponding canopy slit.

[0016] The beneficial effects of the present application are as follows: the load-reducing and stabilized descent parachute provided herein includes a parachute canopy and multiple parachute lines connected at the top to the bottom of the parachute canopy, the parachute canopy having multiple canopy slits, and the parachute canopy being connected to a slit closing assembly corresponding to each canopy slit, the slit closing assembly being used to close the corresponding canopy slits during the canopy inflation process. The load-reducing and stabilized descent parachute and parachute load-reducing method provided herein enable the parachute canopy to have different canopy air permeabilities during the parachute opening process and the stabilized descent process, thereby reducing the impact force during the parachute opening process and increasing the system resistance characteristic value during the stabilized descent process, thereby achieving the purpose of a safe landing of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of a load-reducing and stabilizing parachute provided in an embodiment of the present application when it begins to deploy and inflate;

[0019] Figure 2 A schematic diagram of the structure of a load-reducing and steady-descent parachute provided in an embodiment of the present application when fully inflated for steady descent;

[0020] Figure 3 This is a schematic structural diagram of the slit closure assembly on the load-reducing and stabilizing parachute provided in an embodiment of the present application.

[0021] In the figure: 100, parachute canopy; 110, parachute rope; 120, parachute canopy slit; 130, parachute rope fixing ring; 210, first connecting strap; 220, second connecting strap; 221, bending portion; 230, upper guide ring; 240, lower guide ring; 250, tightening ring; 260, fixing line. 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 making any creative efforts shall fall 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 load-reducing and stabilized descent parachute of the present application are further described in detail below with reference to the embodiments.

[0030] like Figure 1 、 Figure 2 and Figure 3As shown, the embodiment of the present application provides a load-reducing and stabilized descent parachute, which includes a parachute canopy 100 and seventeen parachute ropes 110, each of which is connected to a parachute rope fixing ring 130 at the top. Seventeen parachute canopy slits 120 corresponding to the parachute ropes 110 are opened on the parachute canopy 100, and the seventeen parachute canopy slits 120 are arranged in a circle along the circumference of the parachute canopy 100 at intervals. The parachute canopy 100 is connected to a slit closing assembly corresponding to the parachute canopy slits 120. The closing assembly is used to close the corresponding canopy slit 120 during the inflation process of the parachute canopy 100; each slit closing assembly includes a first connecting belt 210, a second connecting belt 220, an upper guide ring 230, a lower guide ring 240, fourteen tightening rings 250 and four fixing lines 260, the upper guide ring 230 and the lower guide ring 240 are respectively fixed to the parachute canopy 100 above and below the corresponding canopy slit 120, and seven Tightening ring 250; one end of the first connecting belt 210 is connected to the upper guide ring 230, and the other end alternately passes through the seven tightening rings 250 on both sides of the canopy slit 120 and then passes through the lower guide ring 240 to be connected to the umbrella rope fixing ring 130 of the corresponding umbrella rope 110; one end of the second connecting belt 220 is connected to the upper guide ring 230, and the other end passes through the lower guide ring 240 to be connected to the umbrella rope fixing ring 130 of the corresponding umbrella rope 110. The middle part of the second connecting belt 220 is bent to form four "X" shaped bending portion 221, each fixing line 260 is used to fix a bending portion 221 to the parachute canopy 100, and the length of the second connecting belt 220 is less than the length of the first connecting belt 210 before the fixing line 260 is broken at the sewing position, and the length of the second connecting belt 220 is equal to the length of the first connecting belt 210 after the fixing line 260 is broken; when the parachute canopy 100 is inflated, the fixing line 260 is broken to tighten the first connecting belt 210 and close the corresponding canopy slit 120.

[0031] The present application also provides a parachute load reduction method, which includes the following steps: providing seventeen canopy slits 120 and slit closing components corresponding to the canopy slits 120 on the parachute canopy 100; and closing the corresponding canopy slits 120 by the slit closing components during the inflation process of the parachute canopy 100.

[0032] The load-reducing and stable descent parachute and the load-reducing parachute method provided in the embodiment of the present application are provided with a plurality of canopy slits 120 and slit closing components corresponding to the canopy slits 120 on the parachute canopy 100. Before the parachute canopy 100 is opened, the fixing line 260 is not broken, the length of the second connecting belt 220 is shorter than the length of the first connecting belt 210, and the tension of the parachute rope 110 is all concentrated on the second connecting belt 220 with a shorter length, so that the first connecting belt 210 passing through each tightening ring 250 is in a relaxed state. At this time, the canopy slits 120 are in an open state. When the parachute canopy 100 is opened for operation, air flows through the opened canopy slits 120 to reduce the load, thereby effectively reducing the impact force on the parachute canopy 100.

[0033] As the parachute canopy 100 is unfolded and inflated in the high-speed airflow, the tension of the parachute rope 110 on the second connecting belt 220 gradually increases, and the four fixing lines 260 are broken in sequence, and the second connecting belt 220 is stretched and tightened. In this process, the first connecting belt 210 passing through each tightening ring 250 is in a relaxed state, so that the canopy slit 120 is in an open state. The parachute canopy 100 is in a high-speed unfolding and inflating stage. The larger air permeability can reduce the parachute opening impact overload until the four fixing lines 260 are broken. When all of them are pulled apart, making the lengths of the first connecting strap 210 and the second connecting strap 220 equal, the first connecting strap 210 is also stretched and straightened by the tension of the parachute rope 110. The stretched first connecting strap 210 tightens and brings together the tightening rings 250 on both sides of the canopy slit 120, closing the canopy slit 120. At this time, the parachute canopy 100 is in a fully inflated and stable descent state. Since the canopy slit 120 is closed, the system resistance of the parachute canopy 100 increases, thereby achieving the purpose of safe and stable descent.

[0034] 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 load-reducing and stabilized descent parachute comprising a parachute canopy and a plurality of parachute ropes with the tops connected to the bottoms of the parachute canopy, characterized in that: The parachute canopy is provided with a plurality of canopy slits, and the parachute canopy is connected to a slit closing assembly corresponding to the canopy slits one by one, and the slit closing assembly is used to close the corresponding canopy slits during the inflation process of the parachute canopy; the slit closing assembly includes a first connecting strap, a second connecting strap, an upper guide ring, a lower guide ring, a plurality of tightening rings and at least one fixing line, the upper guide ring and the lower guide ring are respectively fixed above and below the corresponding canopy slits, and the plurality of tightening rings are respectively fixed on both sides of the corresponding canopy slits; One end of the first connecting belt is connected to the upper guide ring, and the other end alternately passes through the tightening rings on both sides of the canopy slit and then passes through the lower guide ring to be connected to one of the parachute ropes; one end of the second connecting belt is connected to the upper guide ring, and the other end passes through the lower guide ring to be connected to the first connecting belt. The middle part of the second connecting belt is bent to form at least one bent portion, and the fixing line fixes the bent portion to the parachute canopy. When the parachute canopy is inflated, the fixing line is broken to tighten and close the first connecting belt corresponding to the canopy slit.

2. The load-reducing and stabilized descent parachute according to claim 1, characterized in that: Before the fixing line is broken at the sewing position, the length of the second connecting belt is less than the length of the first connecting belt. After the fixing line is broken, the length of the second connecting belt is equal to the length of the first connecting belt.

3. The load-reducing and stabilized descent parachute according to claim 1, characterized in that: The parachute cord is connected to a parachute cord fixing ring connected to the first connecting belt and the second connecting belt.

4. The load-reducing and stabilized descent parachute according to claim 1, characterized in that: The middle portion of the second connecting belt is bent to form at least one V-shaped or S-shaped bending portion.

5. The load-reducing and stabilized descent parachute according to claim 1, characterized in that: The plurality of canopy slits are arranged in at least one circle, and the canopy slits in each circle are arranged at intervals along the circumference of the parachute canopy.

6. A parachute unloading method, characterized in that: It includes the following steps: The parachute canopy is provided with multiple canopy slits and slit closing components corresponding to the canopy slits one by one; the slit closing component includes a first connecting strap, a second connecting strap, an upper guide ring, a lower guide ring, a plurality of tightening rings and at least one fixing line, the upper guide ring and the lower guide ring are respectively fixed above and below the corresponding canopy slits, and the plurality of tightening rings are respectively fixed on both sides of the corresponding canopy slits; one end of the first connecting strap is connected to the upper guide ring, and the other end alternately passes through the tightening rings on both sides of the canopy slit and then passes through the lower guide ring to be connected to an umbrella rope; one end of the second connecting strap is connected to the upper guide ring, and the other end passes through the lower guide ring to be connected to the first connecting strap, the middle portion of the second connecting strap is bent to form at least one bent portion, and the fixing line fixes the bent portion to the parachute canopy, and when the parachute canopy is inflated, the fixing line is pulled to tighten and close the first connecting strap corresponding to the canopy slit; During the inflation process of the parachute canopy, the slit closing assembly is used to close the corresponding canopy slit.

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