A parachute harness, a parachuting system and an aircraft

Abstract

The utility model discloses a parachute sling, parachute system and airplane, parachute sling includes: first connecting portion, second connecting portion, third connecting portion, wherein, the second connecting portion is provided with the buffer portion between the third connecting portion, and the buffer portion can be by first preset length growth to second preset length when being subjected to the tension from second connecting portion and / or third connecting portion, to make the length growth between second connecting portion to third connecting portion. The utility model discloses a parachute sling, through first connecting portion stress can make parachute sling in the initial stage of parachute can keep shorter length, through second connecting portion stress can make parachute sling length growth after parachute completely opens, through design parachute sling initial length when first connecting portion stress and final length when second connecting portion stress, thereby can reduce the possibility of airplane pitch oversteering due to parachute sling length fixed and leading to the initial stage of parachute.

Description

Technical Field

[0001] This utility model belongs to the field of whole-aircraft parachute technology, specifically relating to a parachute harness, a parachute landing system, and an aircraft. Background Technology

[0002] A whole-aircraft parachute system is a pilot-controlled parachute escape system designed to save passengers and the aircraft in emergency situations where no other emergency procedures can guarantee safety. The parachute is typically connected to slings on the aircraft via several straps. The ability of these straps to be pulled taut determines the aircraft's attitude after deployment and the distribution of forces exerted by the parachute on the aircraft, thus affecting the occupants' chances of survival.

[0003] However, since the lengths of several straps in a traditional whole-aircraft parachute are fixed, in the early stages of parachute deployment, the horizontal airflow affects the parachute. The parachute exerts a pulling force on the aircraft above it through the straps in the opposite direction of the aircraft's travel, which causes the aircraft's nose to lift up. This poses a risk of excessive pitching of the aircraft in the early stages of parachute deployment. Utility Model Content

[0004] The main purpose of this utility model is to overcome the shortcomings and deficiencies of the prior art and provide a parachute sling, a parachute system and an aircraft, in order to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a parachute sling, comprising: a first connecting portion disposed at one end of the parachute sling; a second connecting portion disposed at one end of the parachute sling; and a third connecting portion disposed at the other end of the parachute sling; wherein a buffer portion is provided between the second connecting portion and the third connecting portion, and the buffer portion, when subjected to a tensile force from the second connecting portion and / or the third connecting portion, is capable of increasing from a first preset length to a second preset length, thereby increasing the length between the second connecting portion and the third connecting portion.

[0007] Furthermore, the length from the second connecting portion to the third connecting portion is greater than the length from the first connecting portion to the third connecting portion.

[0008] Furthermore, the portion of the buffer section between one end and the other end is folded in half and sewn together.

[0009] Furthermore, the portion of the buffer section between one end and the other end is sewn together with nylon thread using a 308 stitch.

[0010] Furthermore, an even number of buffer sections are provided, and all of the buffer sections are symmetrically arranged about the length of the parachute sling.

[0011] Furthermore, the first connecting part, the second connecting part, the third connecting part, and the buffer part are an integral structure formed by a continuous strip of webbing.

[0012] Furthermore, the first connecting portion, the second connecting portion, the third connecting portion, and the buffer portion are all formed by partially folding back the webbing; two buffer portions are provided.

[0013] Wherein, one end of the first connecting part extends and its extended portion connects to one end of the third connecting part, the other end of the third connecting part extends and its extended portion connects to one end of the first buffer part, the other end of the first buffer part extends and its extended portion connects to one end of the second connecting part, and the other end of the second connecting part extends and its extended portion connects to one end of the second buffer part.

[0014] Furthermore, a reinforcing band is provided between the extension portion at one end of the first connecting portion and the extension portion at the other end of the first connecting portion, and the reinforcing band is sewn together with the extension portion at the other end of the second buffer portion, the extension portion at one end of the first connecting portion, the extension portion at the other end of the first connecting portion, and the extension portion at the other end of the third connecting portion.

[0015] Secondly, this utility model provides a parachute system, including a parachute, parachute lines, a lifting strap, a hook, a connecting seat, and the parachute sling described in the first aspect; wherein, the parachute lines are provided in a plurality of strands, one end of the plurality of parachute lines is connected to the parachute, the other end of the plurality of parachute lines is connected to one end of the lifting strap, the other end of the lifting strap is connected to the hook, and a third connecting part is connected to the hook; the connecting seat is used to connect to an aircraft, including a seat body, and a fixing pin and an explosive pin connected to the seat body, the first connecting part is connected to the explosive pin, the second connecting part is connected to the fixing pin, and the explosive pin can disengage from the first connecting part when triggered.

[0016] Thirdly, this utility model provides an aircraft including the parachute system described in the second aspect.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects: The parachute sling of this utility model can maintain a shorter length in the early stage of parachute opening by the force of the first connecting part, and can increase the length of the parachute sling after the parachute is fully opened by the force of the second connecting part. By designing the initial length of the parachute sling when the first connecting part is stressed and the final length of the parachute sling when the second connecting part is stressed, the possibility of excessive pitching of the aircraft in the early stage of parachute opening due to the fixed length of the parachute sling can be reduced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0019] Figure 1 This is a side view of the parachute sling buffer section of this utility model when it is not released;

[0020] Figure 2 This is a side view of the parachute sling buffer section after release, according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic cross-sectional view of the buffer section of the parachute sling in an embodiment of the present invention when it is not released;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the buffer section of the parachute sling after release, according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the connecting seat structure in the parachute system of this utility model when the explosive pin is not triggered;

[0024] Figure 6 This is a schematic diagram of the connecting seat structure after the explosive pin is triggered in the parachute system of this utility model embodiment;

[0025] Figure 7 This is a schematic diagram of the first stage of parachute deployment of an aircraft according to an embodiment of this utility model;

[0026] Figure 8 This is a schematic diagram of the second stage of parachute deployment of an aircraft according to an embodiment of this utility model;

[0027] Figure 9 This is a schematic diagram of the third stage of parachute deployment of an aircraft according to an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Parachute sling; 11. First connecting part; 12. Second connecting part; 13. Third connecting part; 14. Buffer part; 15. Nylon sewing thread; 16. Aramid sewing thread; 17. Reinforcing strip;

[0030] 20. Parachute; 21. Parachute lines; 22. Carrying straps; 23. Connecting bracket; 231. Fixing pin; 232. Explosive pin;

[0031] 30. Airplane. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Please see Figures 1 to 4 This utility model provides a parachute sling 10, including: a first connecting part 11 disposed at one end of the parachute sling 10; a second connecting part 12 disposed at one end of the parachute sling 10; and a third connecting part 13 disposed at the other end of the parachute sling 10; wherein, a buffer part 14 is disposed between the second connecting part 12 and the third connecting part 13, and the buffer part 14 can grow from a first preset length to a second preset length when subjected to a pulling force from the second connecting part 12 and / or the third connecting part 13, so that the length between the second connecting part 12 and the third connecting part 13 increases.

[0040] Understandably, in a traditional whole-aircraft parachute 20, the lengths of several straps are fixed. During the initial deployment of the parachute 20, influenced by horizontal airflow, the parachute 20 exerts a pulling force on the aircraft 30 via the straps, opposite to the direction of the aircraft's flight. This can cause the nose of the aircraft 30 to lift, posing a risk of excessive pitching of the aircraft 30 during the initial deployment phase. Furthermore, the explosive pulling force exerted by the parachute 20 on the aircraft 30 via the straps during the initial deployment phase could cause significant damage to the aircraft 30's fuselage.

[0041] It should be noted that the parachute sling 10 proposed in this embodiment can be used in conjunction with the explosive pin 232 in the prior art to selectively connect the first connecting part 11 or the second connecting part 12 to the aircraft 30 and bear force. Therefore, the parachute sling 10 in this embodiment can be used to replace the rear sling in the existing whole-aircraft parachute 20, such as... Figure 7As shown, during the initial stage of parachute deployment, the aircraft 30 is connected and subjected to force via the first connecting part 11. At this time, the parachute harness 10 is relatively short, which allows the aircraft 30 to remain horizontal after being pulled by the parachute 20; as Figure 8 As shown, when the parachute 20 is fully deployed, due to the short length of the parachute harness 10, the aircraft 30 will be in a nose-down position; as Figure 9 As shown, when the parachute 20 is fully opened, it is connected to the aircraft 30 through the second connecting part 12 and subjected to force. As a result, the buffer part 14 is subjected to tension and its length increases from the first preset length to the second preset length. The overall length of the parachute harness 10 increases, which in turn restores the aircraft 30 to its overall horizontal state and finally allows it to land smoothly.

[0042] Furthermore, the lengths of the second connecting portion 12 to the third connecting portion 13 are greater than the lengths of the first connecting portion 11 to the third connecting portion 13. Therefore, when the second connecting portion 12 and the third connecting portion 13 are respectively connected to adjacent fixed structures, the first connecting portion 11 will bear the tension between the parachute 20 and the aircraft 30, while the second connecting portion 12 will not be subjected to any force.

[0043] Furthermore, the portion of the buffer section 14 between one end is folded in half and sewn together.

[0044] It is understood that when the portion between one end and the other end of the buffer portion 14 is folded and sewn together, the buffer portion 14 is of the first preset length; when the buffer portion 14 is subjected to tension from the second connecting portion 12 and / or the third connecting portion 13, the sewn connection between one end and the other end of the buffer portion 14 breaks, so that the portion between one end and the other end of the buffer portion 14 is straightened, and the buffer portion 14 is of the second preset length.

[0045] In some embodiments, a restraint sleeve is provided on the outer side of the parachute sling 10, which makes the parachute sling 10 a single rope, thus making the structure of the parachute sling 10 more compact. The buffer portion 14, although confined and abutting against the inner side of the restraint sleeve, does not affect the length release under stress.

[0046] Specifically, the portion of the buffer section 14 from one end to the other is sewn together with nylon sewing thread 15 using 308 stitch. It should be explained that the combined use of nylon sewing thread 15 and 308 stitch improves the connection strength and reliability of the buffer section 14. Under normal conditions, the connection between the two ends of the buffer section 14 is secure; however, under excessive force, the buffer section 14 can release its length as designed, ensuring the proper functioning of the parachute harness 10.

[0047] Furthermore, an even number of buffer sections 14 are provided, and all buffer sections 14 are symmetrically arranged about the length of the parachute harness 10. Preferably, in this embodiment, two buffer sections 14 are provided.

[0048] Furthermore, the first connecting portion 11, the second connecting portion 12, the third connecting portion 13, and the buffer portion 14 are an integral structure formed by a continuous strip of webbing. In some embodiments, the webbing is aramid webbing.

[0049] In this embodiment, the first connecting part 11, the second connecting part 12, the third connecting part 13, and the buffer part 14 are designed as an integral structure formed by a continuous webbing. This enhances the overall integrity and connection strength of the parachute sling 10, reduces structural weaknesses that may result from too many connection points, and improves the reliability of the sling under complex stress conditions. The use of aramid webbing as the manufacturing material aims to utilize the high strength, high abrasion resistance, and high temperature resistance of aramid fibers to meet the requirements of the parachute sling 10 in withstanding enormous tensile and frictional forces in emergency situations, while simultaneously reducing the weight of the sling and improving overall performance.

[0050] In one possible implementation, when not under stress or under minimal stress, the parachute sling 10 maintains its initial shape and size, with each part positioned according to design requirements. The buffer section 14 remains inactive, providing a reliable connection between the parachute 20 and the aircraft 30. When the parachute 20 opens, the parachute sling 10 begins to bear stress due to the pulling force generated by air resistance. At this point, the advantages of the integrated structure become apparent, with the force being evenly transmitted along the webbing. When the pulling force continues to increase to a certain extent, the nylon sewing thread 15 in the buffer section 14 breaks at the sewn joint as preset, causing the buffer section 14 to extend and allowing for adjustment of the length of the parachute sling 10 to accommodate the aircraft 30's attitude adjustment and energy absorption needs.

[0051] Furthermore, the first connecting portion 11, the second connecting portion 12, the third connecting portion 13, and the buffer portion 14 are all formed by partially folding back the webbing, specifically, the folding angle is 180°; there are two buffer portions 14; one end of the first connecting portion 11 extends and its extended portion connects to one end of the third connecting portion 13, the other end of the third connecting portion 13 extends and its extended portion connects to one end of the first buffer portion 14, the other end of the first buffer portion 14 extends and its extended portion connects to one end of the second connecting portion 12, and the other end of the second connecting portion 12 extends and its extended portion connects to one end of the second buffer portion 14. It can be understood that the first connecting portion 11, the second connecting portion 12, and the third connecting portion 13, formed by partially folding back the webbing, are all connected to a pin-type connector.

[0052] Furthermore, a reinforcing band 17 is provided between the extension portions at one end and the other end of the first connecting portion 11. The reinforcing band 17 is sewn together with the extension portions at the other end of the second buffer portion 14, the extension portions at one end of the first connecting portion 11, the extension portions at the other end of the first connecting portion 11, and the extension portions at the other end of the third connecting portion 13. It is understood that the connection between the reinforcing band 17 and the extension portions at the other ends of the second buffer portion 14 and the third connecting portion 13 forms a more stable stress network, which helps to distribute the tension to more parts of the sling, avoiding excessive stress concentration at one point, thereby improving the stability and durability of the entire sling structure. Optionally, the reinforcing band 17 is an aramid fiber.

[0053] In some embodiments, the reinforcing band 17 is sewn together with the extension portion at the other end of the second buffer portion 14, the extension portion at one end of the first connecting portion 11, the extension portion at the other end of the first connecting portion 11, and the extension portion at the other end of the third connecting portion 13 by aramid sewing thread 16.

[0054] Specifically, the extension portions at the other end of the second buffer portion 14, the extension portions at one end of the first connecting portion 11, the extension portions at the other end of the first connecting portion 11, and the extension portions at the other end of the third connecting portion 13 are sequentially arranged along the direction perpendicular to the length of the parachute harness 10, and these extension portions are parallel to each other. Thus, the first connecting portion 11 forms the inner loop of the parachute harness 10, and the second connecting portion 12 forms the outer loop of the parachute harness 10.

[0055] This utility model provides a parachute system, including a parachute 20, parachute lines 21, a lifting strap 22, a hook, a connecting seat 23, and the aforementioned parachute sling 10; wherein, the parachute lines 21 are provided with several strands, one end of each strand is connected to the parachute 20, the other end of each strand is connected to one end of the lifting strap 22, the other end of the lifting strap 22 is connected to the hook, and a third connecting part 13 is connected to the hook; as shown... Figure 5 and Figure 6 As shown, the connecting seat 23 is used to connect the aircraft 30, including the seat body, and the fixing pin 231 and the explosive pin 232 connected to the seat body. The first connecting part 11 is connected to the explosive pin 232, and the second connecting part 12 is connected to the fixing pin 231. The explosive pin 232 can be disengaged from the first connecting part 11 when triggered.

[0056] The details regarding how the explosive pin 232 works to detach from the first connecting part 11 are existing technologies and will not be elaborated here.

[0057] like Figures 7 to 9As shown, this utility model also provides an aircraft 30, which includes the above-mentioned parachute system.

[0058] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be regarded as equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A parachute sling, characterized in that, include: The first connecting part is disposed at one end of the parachute sling; The second connecting part is provided at one end of the parachute sling; The third connecting part is located at the other end of the parachute sling; A buffer portion is provided between the second connecting portion and the third connecting portion. When the buffer portion is subjected to tension from the second connecting portion and / or the third connecting portion, it can grow from a first preset length to a second preset length, thereby increasing the length between the second connecting portion and the third connecting portion.

2. The parachute sling according to claim 1, characterized in that, The length from the second connecting portion to the third connecting portion is greater than the length from the first connecting portion to the third connecting portion.

3. The parachute sling according to claim 1, characterized in that, The portion of the buffer section between one end and the other end is folded in half and sewn together.

4. The parachute sling according to claim 3, characterized in that, The portion of the buffer section between one end and the other end is sewn together with nylon thread in 308 stitch.

5. The parachute sling according to claim 3, characterized in that, The buffer section is provided in an even number, and all the buffer sections are arranged symmetrically about the length direction of the parachute sling.

6. The parachute sling according to claim 1, characterized in that, The first connecting part, the second connecting part, the third connecting part and the buffer part are an integral structure formed by a continuous webbing.

7. The parachute sling according to claim 6, characterized in that, The first connecting portion, the second connecting portion, the third connecting portion, and the buffer portion are all formed by partially folding back the webbing; two buffer portions are provided. Wherein, one end of the first connecting part extends and its extended portion connects to one end of the third connecting part, the other end of the third connecting part extends and its extended portion connects to one end of the first buffer part, the other end of the first buffer part extends and its extended portion connects to one end of the second connecting part, and the other end of the second connecting part extends and its extended portion connects to one end of the second buffer part.

8. The parachute sling according to claim 7, characterized in that, A reinforcing band is provided between the extension portion at one end of the first connecting part and the extension portion at the other end of the first connecting part. The reinforcing band is sewn together with the extension portion at the other end of the second buffer part, the extension portion at one end of the first connecting part, the extension portion at the other end of the first connecting part, and the extension portion at the other end of the third connecting part.

9. A parachute system, characterized in that, Includes a parachute, parachute lines, lifting straps, hooks, connecting bases, and the parachute sling as described in any one of claims 1-8; wherein, The parachute cords are provided with a plurality of cords, one end of which is connected to the parachute, and the other end of which is connected to one end of the carrying strap. The other end of the carrying strap is connected to the hook. The third connecting part is connected to the hook. The connecting seat is used to connect to the aircraft, including a seat body, and a fixing pin and an explosive pin connected to the seat body. The first connecting part is connected to the explosive pin, and the second connecting part is connected to the fixing pin. The explosive pin can disengage from the first connecting part when triggered.

10. An aircraft, characterized in that, Includes the parachute system as described in claim 9.

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