A parachute cover and parachute landing device

Abstract

This utility model discloses a parachute cover and a parachute landing device. The parachute cover includes: a parachute pouch with a cavity for storing the parachute canopy; and a parachute fabric connected to the outside of the pouch. An inflation cavity is formed between the fabric and the pouch, allowing external airflow to enter. When airflow enters the inflation cavity, at least a portion of its kinetic energy is converted into upward lift force acting on the fabric, thus generating upward buoyancy for the parachute cover. In this utility model, the parachute cover, through the inflation cavity formed between the fabric and the pouch, allows external airflow to enter when the cover is deployed. The airflow flows within the inflation cavity and converts part of its kinetic energy into upward lift force acting on the fabric. This lift force causes the entire parachute cover to experience upward buoyancy, altering the trajectory and position of the parachute canopy inside, enabling it to move upward after release and smoothly pass over the vertical stabilizer or tail propeller area, avoiding collision or entanglement.

Description

Technical Field

[0001] This utility model belongs to the field of parachute technology, specifically relating to a parachute canopy and a parachute descent device. Background Technology

[0002] In the field of aircraft (such as drones), parachute systems are crucial for the safe recovery of aircraft. However, for aircraft with vertical tails or tail propellers, existing parachute systems pose certain safety risks.

[0003] During the parachute deployment process, the pilot parachute is prone to impacting or becoming entangled with the vertical tail / tail propeller, causing the pilot parachute to fail to open properly or even damaging the aircraft's vertical tail or tail propeller. This not only affects the aircraft's recovery efficiency but may also lead to more serious safety accidents. 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 cover and parachute landing device, which aims 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 an umbrella cover, comprising: an umbrella pouch with an umbrella cavity for storing the umbrella cover; and an umbrella fabric connected to the outside of the umbrella pouch; wherein an inflatable cavity is formed between the umbrella fabric and the umbrella pouch, allowing external airflow to enter, and when airflow enters the inflatable cavity, at least part of the kinetic energy of the airflow is converted into an upward lift force acting on the umbrella fabric, so that the umbrella cover can generate an upward buoyancy.

[0007] Furthermore, the bottom side of the umbrella pack is provided with an outlet for releasing the canopy, and the outlet is connected to the canopy cavity.

[0008] Furthermore, the umbrella fabric includes a first connecting portion, a second connecting portion, and a guide portion connected between the first connecting portion and the second connecting portion. The first connecting portion is connected to the top side of the umbrella pack, the second connecting portion is connected to the outer periphery of the umbrella pack, and the guide portion forms the inflation cavity with the umbrella pack.

[0009] Furthermore, the area of ​​the first connecting part is the same as the area of ​​the top side of the umbrella pack, and the periphery of the first connecting part is sewn to the top side of the umbrella pack.

[0010] Furthermore, the second connecting portion is located at the edge of the umbrella fabric, and the length of the edge of the umbrella fabric between adjacent second connecting portions is greater than the span of the adjacent second connecting portions on the outer periphery of the umbrella bag.

[0011] Furthermore, the umbrella fabric is a regular polygon, the second connecting portion is located at the vertex of the umbrella fabric, and the distance from the center of the first connecting portion to either of the second connecting portions is the same.

[0012] Furthermore, the umbrella cover also includes a reinforcing strap that connects the first connecting part and the second connecting part.

[0013] Furthermore, the umbrella bag is cylindrical, and the umbrella fabric is square.

[0014] Furthermore, the surface area of ​​the umbrella fabric is larger than the surface area of ​​the umbrella bag.

[0015] Secondly, this utility model provides a parachute landing device, including the parachute canopy as described in the first aspect, and also including a main umbrella and a guide umbrella. The guide umbrella is stored in the parachute canopy cavity, and the guide umbrella is connected to the main umbrella and the parachute canopy respectively by connecting ropes.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: The umbrella canopy of this utility model, through the air cavity formed between the umbrella fabric and the umbrella pack, allows external airflow to rush into the air cavity when the umbrella canopy is released. The airflow flows in the air cavity and converts part of the kinetic energy into upward lift force acting on the umbrella fabric. The generation of lift force causes the umbrella canopy to be subjected to upward buoyancy as a whole, which in turn can change the movement trajectory and position of the umbrella fabric inside the umbrella canopy, so that it can move upward after release, thereby smoothly passing over the vertical tail or tail propeller area and avoiding collision or entanglement with it. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of the umbrella cover according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the umbrella fabric structure of the umbrella cover according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the umbrella bag structure of the umbrella cover according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Umbrella cover; 11. Umbrella bag; 12. Umbrella fabric; 121. First connecting part; 122. Second connecting part; 123. Guide part; 13. Reinforcing strip. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Please see Figures 1 to 3 This utility model provides an umbrella cover 10, including: an umbrella bag 11 with an umbrella cover cavity for storing the umbrella cover; and an umbrella fabric 12 connected to the outside of the umbrella bag 11. The umbrella fabric 12 and the umbrella bag 11 form an inflation cavity that allows external airflow to enter. When airflow enters the inflation cavity, at least part of the kinetic energy of the airflow is converted into an upward lift force acting on the umbrella fabric 12, so that the umbrella cover 10 can generate an upward buoyancy.

[0031] Understandably, the traditional parachute cover 10 only serves to restrain and store the parachute. During the release process, it cannot effectively utilize aerodynamic principles to generate additional lift, making the parachute device susceptible to interference from the aircraft structure, such as the vertical tail or tail propeller, when it is activated. In this embodiment, by setting up a parachute cover 12, an inflation cavity is formed between the parachute cover 12 and the parachute pack 11. When the parachute descent device is activated, the parachute cover 10 begins to be released from the parachute compartment. The parachute pack 11 is pushed out of the compartment first, and the parachute cover 12 begins to gradually unfold. As the parachute cover 10 is released, the aircraft is still descending, and external airflow begins to flow into the inflation cavity formed between the parachute cover 12 and the parachute pack 11. The parachute cover 12 gradually expands under the push of the airflow, forming a complete inflation cavity structure. As the airflow flows in the inflation cavity, part of the kinetic energy of the airflow is converted into upward lift force acting on the parachute cover 12. The parachute cover 10 as a whole is subjected to upward buoyancy, which causes it to have a certain upward trend during descent. This allows the parachute cover 10 to rise after release, avoiding the collision or entanglement of the parachute cover 10 with the vertical tail or tail propeller area of ​​the aircraft.

[0032] Optionally, the canopy in this embodiment can be the canopy of a pilot parachute, the canopy of a main parachute, or the canopy of a deceleration parachute. The definitions of pilot parachute, main parachute, and deceleration parachute are prior art and will not be elaborated here.

[0033] Furthermore, the bottom side of the parachute pack 11 is provided with an outlet for releasing the parachute canopy, which is connected to the canopy cavity.

[0034] It should be explained that in the parachute device, the parachute canopy needs to be smoothly released and deployed from the parachute pack 11. By setting an opening on the bottom side of the parachute pack 11, the parachute canopy cover 10 rises under the action of airflow, and the parachute canopy is released from the bottom side of the parachute canopy cover 10. This ensures that the parachute canopy can be smoothly pulled out of the parachute pack 11 during the release process, and avoids the parachute canopy being stuck or tangled during release.

[0035] Furthermore, the umbrella fabric 12 includes a first connecting portion 121, a second connecting portion 122, and a guide portion 123 connecting the first connecting portion 121 and the second connecting portion 122. The first connecting portion 121 connects to the top side of the umbrella pack 11, the second connecting portion 122 connects to the outer periphery of the umbrella pack 11, and the guide portion 123 forms an inflation cavity with the umbrella pack 11. The first connecting portion 121 connects to the top side of the umbrella pack 11, providing top support; the second connecting portion 122 connects to the outer periphery of the umbrella pack 11, providing circumferential support; and the guide portion 123 serves as a transition and guides airflow between the two.

[0036] Furthermore, the area of ​​the first connecting part 121 is the same as the area of ​​the top side of the parachute pack 11, and the periphery of the first connecting part 121 is sewn to the top side of the parachute pack 11. It is understood that through area matching and sewing, the connection between the first connecting part 121 and the top side of the parachute pack 11 is more robust and stable, ensuring that the canopy 12 is evenly stressed during inflation, reducing the risk of deformation or damage caused by airflow impact. Moreover, it ensures that the canopy 12 forms a uniform inflation cavity after inflation, allowing airflow to enter and fill the inflation cavity evenly, thereby improving aerodynamic performance, generating more stable lift, and making the parachute cover 10 more stable and controllable during descent.

[0037] Furthermore, the second connecting portion 122 is located at the edge of the umbrella fabric 12, and the length of the edge of the umbrella fabric 12 between adjacent second connecting portions 122 is greater than the span of the adjacent second connecting portions 122 on the outer periphery of the umbrella bag 11.

[0038] In this embodiment, the length of the edge of the umbrella fabric 12 between adjacent second connecting portions 122 is greater than the span of the adjacent second connecting portions 122 on the outer periphery of the umbrella bag 11. This means that the inflation chamber has an opening of sufficient size for air to flow in or out, so that the airflow enters the inflation chamber more evenly, thereby improving the efficiency of lift generation.

[0039] Furthermore, the canopy 12 is a regular polygon, with the second connecting portion 122 located at the apex of the canopy 12, and the distance from the center of the first connecting portion 121 to either of the second connecting portions 122 is the same. It should be explained that the buoyancy of the canopy cover 10 depends on the shape of the inflation chamber and the uniform distribution of airflow, and the regular polygonal design of the canopy 12 ensures that airflow can enter the inflation chamber more evenly, avoiding uneven inflation or local deformation when the canopy 12 is unfolded.

[0040] Furthermore, the umbrella cover 10 also includes reinforcing straps 13, which connect the first connecting portion 121 and the second connecting portion 122. Optionally, when the umbrella fabric 12 is a regular polygon with an even number of sides, it has an axis of symmetry that is half the number of sides of the umbrella fabric 12. The number of reinforcing straps 13 is half the number of sides of the umbrella fabric 12, and each reinforcing strap 13 is arranged along the axis of symmetry of the umbrella cover 10. Each reinforcing strap 13 passes through the center of the first connecting portion 121 and connects the two second connecting portions 122.

[0041] Furthermore, the umbrella bag 11 is cylindrical, and the umbrella fabric 12 is square.

[0042] Furthermore, the surface area of ​​the umbrella fabric 12 is larger than the surface area of ​​the umbrella bag 11.

[0043] Furthermore, both the umbrella bag 11 and the umbrella fabric 12 are made of soft fabric.

[0044] This utility model provides a parachute landing device, including a parachute cover 10, a main parachute and a guide parachute. The guide parachute is stored in the parachute cavity and is connected to the main parachute and the parachute cover 10 respectively by connecting ropes.

[0045] Specifically, in the initial state, the parachute cover 10 is stored inside the aircraft's parachute compartment, and the pilot chute is placed in the canopy cavity of the parachute pack 11, not yet deployed. The main parachute is connected to the pilot chute via connecting ropes. When the parachute deployment device needs to be activated, the parachute cover 10, which is wrapped around the pilot chute, is released first. At this time, the pilot chute is still stored in the canopy cavity of the parachute pack 11 and has not yet deployed. During the release of the parachute cover 10, external airflow continuously flows into the inflation cavity formed between the canopy 12 and the parachute pack 11. The airflow flows within the inflation cavity, pushing the canopy 12 to expand outward, and part of the kinetic energy of the airflow is converted into upward lift force acting on the canopy 12, causing the parachute cover 10 to experience upward buoyancy as a whole. This causes the parachute cover 10 to move upward a certain distance, thus successfully passing over the vertical tail or tail propeller area, and then the pilot chute is released from the parachute pack 11.

[0046] 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. An umbrella cover, characterized in that, include: The umbrella bag has a canopy cavity for storing the umbrella canopy; The umbrella fabric connects to the outside of the umbrella bag; The umbrella fabric and the umbrella cover form an inflatable cavity that allows external airflow to enter. When airflow enters the inflatable cavity, at least part of the kinetic energy of the airflow is converted into an upward lift force acting on the umbrella fabric, so that the umbrella cover can generate an upward buoyancy.

2. The umbrella cover according to claim 1, characterized in that, The bottom side of the umbrella pack is provided with an outlet for releasing the canopy, and the outlet is connected to the canopy cavity.

3. The umbrella cover according to claim 1 or 2, characterized in that, The umbrella fabric includes a first connecting portion, a second connecting portion, and a guide portion connected between the first connecting portion and the second connecting portion. The first connecting portion is connected to the top side of the umbrella bag, the second connecting portion is connected to the outer periphery of the umbrella bag, and the guide portion and the umbrella bag form the inflation cavity.

4. The umbrella cover according to claim 3, characterized in that, The area of ​​the first connecting part is the same as the area of ​​the top side of the umbrella bag, and the periphery of the first connecting part is sewn to the top side of the umbrella bag.

5. The umbrella cover according to claim 3, characterized in that, The second connecting portion is located at the edge of the umbrella fabric, and the length of the edge of the umbrella fabric between adjacent second connecting portions is greater than the span of the adjacent second connecting portions on the outer periphery of the umbrella bag.

6. The umbrella cover according to claim 3, characterized in that, The umbrella fabric is a regular polygon, the second connecting part is located at the vertex of the umbrella fabric, and the distance from the center of the first connecting part to either of the second connecting parts is the same.

7. The umbrella cover according to claim 3, characterized in that, The umbrella cover also includes a reinforcing strap that connects the first connecting part and the second connecting part.

8. The umbrella cover according to claim 1, characterized in that, The umbrella bag is cylindrical, and the umbrella fabric is square.

9. The umbrella cover according to claim 1, characterized in that, The surface area of ​​the umbrella fabric is greater than the surface area of ​​the umbrella bag.

10. A parachute rappelling device, characterized in that, The canopy includes the umbrella cover as described in any one of claims 1-9, and further includes a main umbrella and a guide umbrella, wherein the guide umbrella is stored in the canopy cavity and the guide umbrella is connected to the main umbrella and the canopy cover respectively by connecting ropes.

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