A cross parachute reinforcing canopy
Patent Information
- Application Number
- CN202522673625.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-17
AI Technical Summary
十字形降落伞具有开伞快、动载小、稳定性好等性能，而且结构简单、成本相对低廉、重量轻、体积小，但也存在一些缺陷，例如在来流速度较大的情况下开伞充气时，伞衣应力易集中，对伞衣设计强度的要求较高，可能导致伞衣织物局部撕裂、缝合处开线或结构疲劳损伤，影响伞衣的整体强度与可靠使用寿命
本实用新型中，伞心加强层强化伞衣中心正方形区域及伞衣幅根部交叉部位，显著提升整体抗动载冲击性能，使降落伞能够在高速来流状态下顺利开伞并保持结构完整，有效防止中心区域破损与根部开裂，伞边加强层包裹伞衣外边缘并贯通中心区域，在提高伞衣边缘抗变形能力的同时，也增强了伞心加强层与伞衣底层的结合强度，从而保障伞衣在高速气流中形态稳定，降低局部应力集中风险。
Smart Images
Figure CN224916199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of parachute technology, specifically to a cross-shaped parachute with a reinforced canopy. Background Technology
[0002] A parachute is a flexible aerodynamic deceleration device characterized by its light weight, small size, stable deceleration effect, ease of manufacturing, and low cost. Parachutes are widely used in aerospace, national defense, science and civilian technology, and are commonly used in scenarios such as paratrooper deployment, airdrop of supplies, equipment recovery, aircraft landing deceleration, bomb attitude adjustment, weapon deployment, and extreme sports.
[0003] The cruciform parachute is a simple parachute configuration. It offers advantages such as rapid deployment, low dynamic load, and good stability. It is also simple in structure, relatively inexpensive, lightweight, and compact. However, it also has some drawbacks. For example, under high-velocity airflow, stress concentration in the canopy during inflation can lead to higher design strength requirements, potentially causing localized tearing of the fabric, seam opening, or structural fatigue damage, thus affecting the overall strength and reliable service life of the canopy.
[0004] Therefore, it is necessary to invent a cross-shaped parachute with a reinforced canopy to solve the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cross-shaped parachute with a reinforced canopy. Targeting parachute opening scenarios under high-speed incoming currents, this invention enhances the canopy's ability to resist large local stresses during inflation and opening under high-speed currents by locally reinforcing specific areas on the canopy surface. This ensures the canopy maintains structural integrity and that the inflation and opening processes proceed normally.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cross-shaped parachute with a reinforced canopy includes a canopy bottom layer, wherein the canopy bottom layer is a planar cross shape, and canopy panels are distributed outward from the four sides of a central square. A core reinforcement layer is provided on one side of the upper surface of the center of the bottom layer of the umbrella canopy; An edge reinforcement layer is provided on the outer edge of the bottom layer of the umbrella canopy, with its central area covering the top of the core reinforcement layer. The paracord attachment has multiple paracords, one end of which is connected to the outer edge of each canopy panel at the bottom layer of the canopy, and the other end is gathered and connected to a load-bearing structure.
[0007] As a preferred embodiment of this utility model, the central area of the bottom layer of the umbrella canopy is a square surface, and its periphery is a radially distributed rectangular umbrella canopy surface; the ratio of the side length b of each umbrella canopy surface to the side length a of the central square area is 0.5~3.
[0008] As a preferred embodiment of this utility model, the area of the umbrella core reinforcing layer covering the central area of the bottom layer of the umbrella canopy is greater than 50% of the area of the central area; the umbrella core reinforcing layer forms a 3 / 4 circular reinforcing part at the intersection area of adjacent umbrella canopy roots, and the diameter d of the circular reinforcing part is greater than 40% of the side length a of the square of the central area of the bottom layer of the umbrella canopy.
[0009] As a preferred embodiment of this utility model, the bottom layer of the umbrella canopy is either a one-piece cut or a multi-piece spliced structure; the one-piece cut structure is a cross-shaped structure cut from a single piece of material, with the central area transitioning evenly to the width of the umbrella canopy; the multi-piece spliced structure is a cross-shaped structure made by sewing together separate fabrics.
[0010] As a preferred embodiment of this utility model, the umbrella edge reinforcing layer is symmetrically distributed on the upper and lower sides of the outer edge of the umbrella canopy bottom layer and wraps around the edge, and its single-sided width e is 1% to 3% of the side length a of the square in the central area of the umbrella canopy bottom layer.
[0011] As a preferred embodiment of this utility model, the number of connecting cords on the outer edge of each umbrella canopy is equal and at least 2; when the number of connecting cords is 2, the two connecting points are located at the two ends of the edge of the umbrella canopy respectively; when the number of connecting cords is greater than 2, the multiple connecting points are evenly distributed on the outer edge of the umbrella canopy.
[0012] As a preferred embodiment of this utility model, the bottom layer of the umbrella canopy, the core reinforcement layer, the edge reinforcement layer, and the paracord accessories are all made of a sewn flexible material and are foldable.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: In this invention, the core reinforcement layer strengthens the central square area of the parachute canopy and the intersection of the canopy root, significantly improving the overall resistance to dynamic load impact. This allows the parachute to open smoothly under high-speed airflow while maintaining structural integrity, effectively preventing damage to the central area and cracking at the root. The edge reinforcement layer wraps around the outer edge of the canopy and extends through the central area, improving the edge deformation resistance of the canopy while also enhancing the bonding strength between the core reinforcement layer and the bottom layer of the canopy. This ensures the stability of the canopy's shape in high-speed airflow and reduces the risk of local stress concentration. Attached Figure Description
[0014] Figure 1 This is an isometric view illustrating the overall structure of this utility model; Figure 2This is a top view of the entire utility model; Figure 3 This is a diagram showing the assembly sequence of the components of this utility model; Figure 4 This is a diagram showing the simulation calculation results of the stress distribution of the umbrella canopy according to this utility model.
[0015] Explanation of reference numerals in the attached diagram: 100, bottom layer of the canopy; 200, reinforcing layer of the canopy core; 300, reinforcing layer of the canopy edge. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0017] This utility model provides, for example Figure 1-4 The parachute shown is a cross-shaped parachute with a reinforced canopy, including a canopy bottom layer 100, which is a planar cross shape with canopy panels radiating outward from the four sides of a central square. The umbrella core reinforcement layer 200 is disposed on one side of the upper center surface of the bottom layer 100 of the umbrella canopy; The umbrella edge reinforcement layer 300 is disposed on the outer edge of the umbrella canopy bottom layer 100, and its central area covers the top of the umbrella core reinforcement layer 200. The paracord attachment has multiple paracords, one end of which is connected to the outer edge of each of the 100 bottom panels of the canopy, and the other end is gathered and connected to a load-bearing structure.
[0018] Designed to overcome localized high stress on the parachute surface under high-speed incoming flow conditions, enabling the parachute to deploy under such conditions. The bottom layer 100 of the parachute provides drag during parachute operation. A core reinforcement layer 200 is attached to the central square area of its upper surface, while edge reinforcement layers 300 are attached to the edges and center area. Parachute lines are attached to the outer edges of the parachute wings. The core reinforcement layer 200 increases the structural strength of the central square area on the upper surface of the bottom layer 100, allowing it to withstand dynamic impact forces from higher incoming flow velocities, preventing damage to the central area and cracking at the intersection of the parachute wings, thus ensuring the structural integrity of the bottom layer 100. The edge reinforcement layer 300 wraps around the outer edge of the parachute and extends through the core reinforcement layer 200, increasing the structural strength of the outer edge and the edge of the central square area of the bottom layer 100, improving the shape retention of the outer edge, and also increasing the adhesion strength of the core reinforcement layer 200 to the bottom layer 100.
[0019] The central area of the bottom layer 100 of the umbrella canopy is a square surface, and its periphery is a radially distributed rectangular umbrella canopy surface; the ratio of the side length b of each umbrella canopy surface to the side length a of the central square area is 0.5~3.
[0020] If the ratio of the side length b of the canopy flap of the bottom layer 100 to the side length a of the square in the central area of the bottom layer 100 is small, meaning the area of the canopy flap of the bottom layer 100 is smaller than the area of the central area, the escape space for incoming gas at the intersection of the roots of adjacent canopies is smaller during parachute opening and stabilization. The central area of the bottom layer 100 bears a larger dynamic load impact during opening. However, in this case, the parachute provides greater lift and has stronger load-bearing capacity during stabilization. Conversely, if the ratio of the side length b of the canopy flap of the bottom layer 100 to the side length a of the square in the central area is larger, the cross-shaped parachute has a longer side, providing a larger escape space for incoming gas at the intersection of the roots of adjacent canopies. During parachute opening, the square in the central area of the bottom layer 100 experiences less opening impact, resulting in less lift and weaker load-bearing capacity.
[0021] The area covered by the core reinforcement layer 200 of the central region of the canopy bottom layer 100 is greater than 50% of the area of the central region. The core reinforcement layer 200 forms a 3 / 4 circular reinforcement section at the intersection of adjacent canopy web roots, and the diameter d of this circular reinforcement section is greater than 40% of the side length a of the square in the central region of the canopy bottom layer 100. The larger the fabric area protected by the core reinforcement layer 200 in the central region of the canopy bottom layer 100, the greater the range of dynamic impact force that the canopy bottom layer 100 can withstand when the umbrella is open. The greater the fabric thickness protected by the core reinforcement layer 200 in the central region of the canopy bottom layer 100, the greater the strength of the canopy bottom layer 100 in withstanding the dynamic impact force when the umbrella is open. The larger the fabric area and thickness of the core reinforcement layer 200 at the intersection of adjacent canopy web roots of the canopy bottom layer 100, the stronger the tear resistance of the intersection area at the intersection of adjacent canopy web roots of the canopy bottom layer 100.
[0022] The bottom layer 100 of the umbrella canopy is either a one-piece cut or a multi-piece spliced structure; the one-piece cut structure is a cross-shaped structure cut from a single piece of material, with the central area transitioning evenly to the canopy width; the multi-piece spliced structure is a cross-shaped structure made by sewing together separate fabrics.
[0023] Reference Figure 2 As shown, the umbrella edge reinforcement layer 300 is symmetrically distributed on both the upper and lower sides of the edge of the umbrella canopy bottom layer 100, wrapping the outer edge of the umbrella canopy bottom layer 100.
[0024] The umbrella edge reinforcement layer 300 is symmetrically distributed on the upper and lower sides of the outer edge of the umbrella canopy bottom layer 100 and wraps around the edge. Its width e on one side is 1% to 3% of the side length a of the square in the central area of the umbrella canopy bottom layer 100.
[0025] The greater the width and thickness of the umbrella edge reinforcement layer 300, the greater the reinforcement range and the stronger the reinforcement capacity of the umbrella core reinforcement layer 200 at the edge and center of the umbrella canopy bottom layer 100.
[0026] Reference Figure 3 As shown, the assembly sequence of the umbrella canopy bottom layer 100, the umbrella core reinforcement layer 200 and the umbrella edge reinforcement layer 300 is as follows: the umbrella canopy bottom layer 100 is the base surface, the umbrella core reinforcement layer 200 is attached to the central square area of the umbrella canopy bottom layer 100, and the umbrella edge reinforcement layer 300 is attached to the combination of the umbrella canopy bottom layer 100 and the umbrella core reinforcement layer 200.
[0027] The umbrella core reinforcement layer 200 is attached to the central square area of the umbrella canopy bottom layer 100 by sewing. The specific sewing area, sewing method and sewing materials are varied and will be determined according to the project requirements. No restrictions are imposed here.
[0028] The side length a of the central square of the umbrella canopy bottom layer 100 is equal to the side length b of the umbrella canopy side. The diameter d of the fabric of the cross area at the root of the adjacent umbrella canopy widths protected by the umbrella core reinforcement layer 200 is 45% of the side length a of the central square of the umbrella canopy bottom layer 100. The single-sided width e of the umbrella edge reinforcement layer 300 is 2% of the side length a of the central square of the umbrella canopy bottom layer 100.
[0029] The edge reinforcement layer 300 is attached to the combination of the canopy bottom layer 100 and the canopy core reinforcement layer 200 by sewing. The edge reinforcement layer 300 wraps around the outer edge area of the canopy bottom layer 100; in the central square area of the canopy bottom layer 100, the edge reinforcement layer 300 reinforces the connection between the canopy core reinforcement layer 200 and the canopy bottom layer 100.
[0030] There are three evenly distributed connection points on the outer edge of each canopy panel of the bottom layer 100 of the paracord attachment. One end of each paracord attachment is sewn to the bottom layer 100 of the canopy, and the other end is uniformly gathered and made into a loop for easy connection to the load-bearing object.
[0031] The paracord attachments have an equal number of at least two connecting points on each outer edge of the canopy. When there are two connecting points, the two connection points are located at opposite ends of the canopy edge. When there are more than two connecting points, multiple connection points are evenly distributed along the outer edge of the canopy. The paracord attachments are generally rope-like devices used to connect the load-bearing object to the canopy base layer 100. There are many types of rope devices, and no limitation is made here. The connection points between the paracord attachments and the canopy base layer 100 are distributed along the outer edge of the canopy of the canopy base layer 100. Each outer edge of the canopy has two connection points distributed at both ends or multiple connection points evenly distributed. The distance between the connection points and the outer edge of the canopy is not limited. The connection between the paracord attachments and the canopy base layer 100 can be achieved through various methods such as sewing or ring fastening, and no limitation is made here. One end of the paracord attachment connects to the edge of the canopy of the canopy base layer 100, and the other end is uniformly gathered to connect and mount the load-bearing object.
[0032] The canopy bottom layer 100, the canopy core reinforcing layer 200, the canopy edge reinforcing layer 300, and the parachute rope accessories are all made of a sewn flexible material and are foldable. Traditional cross-shaped parachutes do not have a top hole in the central square area of the canopy; whether or not a top hole is provided, as well as the number, shape, and area of such holes, can be determined according to engineering requirements. In some embodiments of the present invention, a top hole can be provided as needed to reduce canopy stress.
[0033] In this invention, the core reinforcement layer 200 strengthens the central square area of the parachute canopy and the intersection of the canopy flaps and roots, significantly improving the overall resistance to dynamic load impact. This allows the parachute to open smoothly under high-speed airflow while maintaining structural integrity, effectively preventing damage to the central area and cracking at the roots. The edge reinforcement layer 300 wraps around the outer edge of the canopy and extends through the central area. While improving the edge resistance to deformation, it also enhances the bonding strength between the core reinforcement layer 200 and the bottom layer 100 of the canopy, thereby ensuring the stability of the canopy in high-speed airflow and reducing the risk of local stress concentration.
[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A cross-shaped parachute with a reinforced canopy, characterized in that: Includes a canopy bottom layer (100), wherein the canopy bottom layer (100) is a planar cross shape, and the canopy width is distributed outward from the four sides of the central square; A core reinforcement layer (200) is provided on one side of the upper center surface of the bottom layer (100) of the umbrella canopy; The umbrella edge reinforcement layer (300) is disposed on the outer edge of the umbrella canopy bottom layer (100), and its central area covers the top of the umbrella core reinforcement layer (200); The paracord attachment has multiple paracords, one end of which is connected to the outer edge of each canopy panel of the bottom layer (100) of the canopy, and the other end is gathered and connected to a load-bearing structure.
2. The cross-shaped parachute with a reinforced canopy according to claim 1, characterized in that: The central area of the bottom layer (100) of the umbrella canopy is a square surface, and its periphery is a radially distributed rectangular umbrella canopy surface; the ratio of the side length b of each umbrella canopy surface to the side length a of the central square area is 0.5~3.
3. The cross-shaped parachute with a reinforced canopy according to claim 1, characterized in that: The area of the core reinforcement layer (200) covering the central region of the canopy bottom layer (100) is greater than 50% of the area of the central region; the core reinforcement layer (200) forms a 3 / 4 circular reinforcement part at the intersection of adjacent canopy web roots, and the diameter d of the circular reinforcement part is greater than 40% of the side length a of the square of the central region of the canopy bottom layer (100).
4. The cross-shaped parachute with a reinforced canopy according to claim 1, characterized in that: The bottom layer (100) of the umbrella canopy is either a one-piece cut or a multi-piece spliced structure; the one-piece cut structure is a cross-shaped structure cut from a single piece of material, with the central area transitioning evenly to the canopy width; the multi-piece spliced structure is a cross-shaped structure made by sewing together separate fabrics.
5. A cross-shaped parachute with a reinforced canopy according to claim 1, characterized in that: The umbrella edge reinforcement layer (300) is symmetrically distributed on the upper and lower sides of the outer edge of the umbrella canopy bottom layer (100) and wraps around the edge. Its single-sided width e is 1% to 3% of the side length a of the square in the central area of the umbrella canopy bottom layer (100).
6. The cross-shaped parachute with a reinforced canopy according to claim 1, characterized in that: The number of connecting cords in the paracord attachment is equal and at least 2 on the outer edge of each paracord; when the number of connecting cords is 2, the two connecting points are located at the two ends of the edge of the paracord respectively; when the number of connecting cords is greater than 2, the multiple connecting points are evenly distributed on the outer edge of the paracord.
7. A cross-shaped parachute with a reinforced canopy according to claim 1, characterized in that: The umbrella canopy bottom layer (100), the umbrella core reinforcement layer (200), the umbrella edge reinforcement layer (300), and the umbrella cord accessories are all made of a sewn flexible material and are foldable.