A parachute opening control system

Abstract

The present invention provides a parachute opening control system, which includes a parachute canopy and suspension lines. The parachute canopy includes a central parachute canopy part and a restraint parachute canopy part. The system further includes a central line, a central line restraint band, a constant force line, and a central line ring. The restraint parachute canopy part uses a low-strength line. One end of the central line restraint band is connected to the top of the central parachute canopy part, and the other end is provided with a restraint band ring. One end of the central line is provided with a central line ring, and the other end passes through the restraint band ring and is connected to the item to be dropped. Multiple connection buckles are arranged in the middle. The diameter of the central line ring is larger than that of the restraint band ring, so that the central line ring and the restraint band ring are separated. The constant force line binds the central line ring and the connection buckle arranged at the opposite end to form a restraint. Under the action of an external force, the constant force line one, the constant force line two, and the low-strength line are successively released, and the restraint parachute canopy is fully deployed. This system is lightweight, can meet the requirement of reducing the opening impact force under high-speed parachute opening, and at the same time meet the requirement of landing safety after full-area deployment.

Description

Technical Field

[0001] The invention relates to the field of parachute lifesaving, in particular to a parachute opening control system. Background Art

[0002] When the parachute is deployed, the parachute opening process is an instantaneous burst process. To reduce the speed of the instantly dropped materials, a large relative impact force will be generated between the parachute and the object. When the parachute is opened at high speed, the full area of the parachute is instantly expanded and inflated, and the impact force is large. When dropping from a high altitude on a carrier aircraft or making an emergency landing near the ground, a multi-stage parachute system is used due to the high speed. The multi-stage parachute system is heavy and bulky, and is not suitable for use in situations where the system weight is required. Summary of the invention

[0003] The purpose of the invention is to provide a parachute opening control system that can gradually unfold the full area of the parachute when the parachute is opened at high speed. The system is light in weight and can reduce the impact force of the parachute opening at high speed, while meeting the requirements of landing safety after the full area is unfolded.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a parachute opening control system, including a center rope, a center rope restraint belt, a stabilizing rope, and a center rope ring. The restraining canopy part uses weak and strong ropes to sew the canopy in a "W" shape. One end of the center rope restraint belt is connected to the top of the center canopy part, and the other end is provided with a restraint belt ring. A center rope ring is provided at one end of the center rope, and a plurality of connecting buckles are provided in the middle. The other end passes through the restraint belt ring and is connected to the object to be dropped. The center rope ring has a larger diameter than the restraint belt ring, so that the center rope ring is separated from the restraint belt ring. There are multiple stabilizing ropes, and the stabilizing ropes sequentially bind the center rope ring with the connecting buckles provided at the opposite ends of the restraint belt ring to form multiple constraints. Under the action of external force, the stabilizing ropes and the "W"-shaped sutured parts of the weak and strong ropes sequentially release the constraints and the canopy is fully unfolded.

[0005] In the above scheme, the stabilizing rope includes a stabilizing rope 1, one end of which is connected to the central rope ring, and the other end is connected to the connecting buckle to form a first constraint.

[0006] In the above scheme, the stabilizing rope includes stabilizing rope 2, and stabilizing rope 2 bundles two adjacent connecting buckles of the central rope to form a second constraint.

[0007] In the above scheme, the length of the second stabilizing rope is shorter than that of the first stabilizing rope.

[0008] In the above scheme, the strength of the second stabilizing rope is weaker than that of the first stabilizing rope.

[0009] In the above scheme, the parachute opening control system also includes a center rope protection cover, which wraps the center rope connecting part.

[0010] Use a fixed-force rope to sew and restrain the parachute canopy at the bottom edge of the parachute canopy; at the same time, adopt the method of pulling down the central rope to further reduce the initial deployment area of the parachute. During the parachute opening process, the area of the instantaneously deployed parachute is small. As the parachute opening time continues, the weak sewing rope at the bottom edge of the canopy breaks, the bottom edge of the canopy unfolds, and the area of the parachute increases. As the step-by-step strong ropes distributed on the central rope that restrains the central canopy break, the central canopy is gradually released until it is completely released, and the full area of the parachute unfolds. During the entire deployment process of the parachute, the step-by-step deployment of the canopy is asynchronous, reducing the huge impact force caused by the instantaneous full-area deployment. The operation is relatively simple and can meet the parachute opening and landing safety requirements for airdropping materials at high-speed parachute opening.

[0011] The advantages and beneficial effects of the present invention: Provide a system for the step-by-step deployment of the full area of a parachute during high-speed parachute opening. Before using a high-speed parachute, use a weak connection rope to sew and restrain the deployment of the canopy. Secondly, pull down the central canopy to further reduce the area of the parachute deployed instantaneously at the beginning. By adopting the method of restraining with different-strength fixed-force ropes on the central rope, the area of the parachute deployed instantaneously at high speed gradually increases, which has a good application effect on reducing the impact load of the high-speed deployed parachute. By restraining the instantaneously deployed area, the full area is deployed step by step. Brief Description of the Drawings

[0012] The invention will be further described below with reference to the drawings and embodiments.

[0013] Figure 1 It is a schematic diagram before the parachute works provided by the embodiment of the present invention.

[0014] Figure 2 It is a schematic diagram after the parachute restraining canopy works provided by the embodiment of the present invention.

[0015] Figure 3 It is a schematic diagram of the central restraint of the canopy provided by the embodiment of the present invention.

[0016] Figure 4 It is a schematic diagram of the fully deployed canopy provided by the embodiment of the present invention.

[0017] In the figure, 1. Central canopy part, 2. Peripheral canopy, 3. Restraining canopy part, 4. Central rope, 5. Central rope protective sleeve, 6. Central rope restraint band, 7. Connecting buckle, 8. Fixed-force rope one, 9. Central rope ring, 10. Fixed-force rope two, 11. Restraint band ring, 12. Weak strong rope. Detailed Embodiment

[0018] The present invention will be further described in detail below through specific embodiments:

[0019] As Figures 1 to 4As shown in the figure, a parachute opening control system includes a parachute canopy and suspension lines. The parachute canopy includes a central parachute canopy part 1 and a restraint parachute canopy part 3. The system further includes a central line 4, a central line restraint band 6, a constant force line, and a central line ring 9. The restraint parachute canopy part 3 stitches the parachute canopy in a "W" shape using a weak strong force line 12. One end of the central line restraint band 6 is connected to the top end of the central parachute canopy part 1, and the other end is provided with a restraint band ring 11. One end of the central line 4 is provided with a central line ring 9, and multiple connecting buckles 7 are arranged in the middle. The other end passes through the restraint band ring 11 and is connected to the item to be dropped. The diameter of the central line ring 9 is larger than that of the restraint band ring 11, so that the central line ring 9 is separated from the restraint band ring 11. There are multiple constant force lines, and the constant force lines sequentially tie the central line ring 9 and the connecting buckle 7 arranged at the opposite end passing through the restraint band ring 11 to form multiple constraints. Under the action of an external force, the constant force lines and the "W" - shaped stitching part of the weak strong force line are sequentially released, and the restraint parachute canopy is fully unfolded.

[0020] Further, the constant force line includes a constant force line one 8. One end of the constant force line one 8 is connected to the central line ring 9, and the other end is connected to the connecting buckle 7 to form the first constraint. The constant force line includes a constant force line two 10. The constant force line two 10 ties two adjacent connecting buckles 7 on the central line 4 to form the second constraint. The length of the constant force line two 10 is shorter than that of the constant force line one 8. The strength of the constant force line two 10 is weaker than that of the constant force line one 8. The opening control system further includes a central line protective sleeve 5, and the central line protective sleeve 5 wraps the connecting part of the central line 4. The restraint parachute canopy part 3 is stitched and constrained by the weak strong force line 12 to make the parachute in an initial state.

[0021] Working principle

[0022] The figures show the state of the parachute system provided by the embodiment of the present invention before work, during work, and after work. Before the parachute works, the central parachute canopy part 1 is pulled down, and the central line ring 9 on the central line 4 on the central parachute canopy part 1 is separated from the restraint band ring 11 on the central line restraint band 6. The constant force line one 8 is used to tie the central line ring 9 and the connecting buckle 7. At the same time, the constant force line two 10 is used to tie two adjacent connecting buckles 7 on the central line 4. Among them, the length of the constant force line two 10 is shorter than that of the constant force line one 8; the strength of the constant force line two 10 is weaker than that of the constant force line one 8; after tying, the central line protective sleeve 5 is used to wrap the connecting part of the central line 4. The bottom edge of the restraint parachute canopy part is stitched and constrained in a "W" shape using a weak strong force line.

[0023] When the system is working, at the moment of high-speed parachute opening, the restraining canopy part will retract the entire canopy part, and the central rope 4 will pull down the central canopy part 1, and the entire parachute canopy area is reduced from these two aspects. When the parachute is opened at high speed, the unrestrained part of the parachute canopy will instantly unfold. Subsequently, the restraining canopy part 3 will break the weak and strong ropes during the parachute opening process and unfold the "W"-shaped folds. Thereafter, after the central canopy part 1 is affected by the airflow, the central rope 4 is pulled, and the fixing rope 2 10 is broken due to the first force during the movement of the central rope 4. The parachute canopy area is further increased during the upward movement of the central canopy part 1. As the central rope 4 continues to be pulled, the fixing rope 1 8 is broken by the central rope ring 9, and the central rope ring 9 moves with the central rope 4. When the central canopy part 1 is fully inflated, the central rope ring 9 is larger than the diameter of the restraining belt ring 11, and the two rings are completely clamped, straightening and tightening the central rope restraining belt 6, and the parachute is fully inflated and begins to descend steadily.

[0024] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes or modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is intended to also include these changes and modifications.

Claims

1. A parachute opening control system, comprising a parachute canopy and suspension lines. The parachute canopy includes a central parachute canopy part (1) and a restraint parachute canopy part (3), characterized in that The system further includes a central rope (4), a central rope restraint band (6), a fixed-force rope, and a central rope ring (9). The restraint parachute section (3) is "W"-stitched with a weak strong rope (12). One end of the central rope restraint band (6) is connected to the top of the central parachute section (1), and the other end is provided with a restraint band ring (11). One end of the central rope (4) is provided with a central rope ring (9), and multiple connecting buckles (7) are arranged in the middle. The other end passes through the restraint band ring (11) and is connected to the item to be dropped. The diameter of the central rope ring (9) is larger than that of the restraint band ring (11), so that the central rope ring (9) is separated from the restraint band ring (11). There are multiple fixed-force ropes. The fixed-force ropes successively tie the central rope ring (9) and the connecting buckle (7) arranged at the opposite end passing through the restraint band ring (11) to form multiple constraints. Under the action of an external force, the fixed-force ropes and the "W"-stitched part of the weak strong rope are sequentially released, and the restraint parachute is fully deployed.

2. The parachute opening control system according to claim 1, characterized in that, The fixed-force rope includes a first fixed-force rope (8). One end of the first fixed-force rope (8) is connected to the central rope ring (9), and the other end is connected to the connecting buckle (7) to form the first constraint.

3. The parachute opening control system according to claim 2, characterized in that, The fixed-force rope includes a second fixed-force rope (10). The second fixed-force rope (10) ties two adjacent connecting buckles (7) of the central rope (4) to form the second constraint.

4. The parachute opening control system according to claim 3, characterized in that, The length of the second fixed-force rope (10) is shorter than that of the first fixed-force rope (8).

5. A parachute opening control system according to claim 3, characterized in that The strength of the second fixed-force rope (10) is weaker than that of the first fixed-force rope (8).

6. A parachute opening control system according to claim 1, characterized in that, The parachute opening control system further includes a central rope protective sleeve (5). The central rope protective sleeve (5) wraps the connection part of the central rope (4) and the central rope restraint band (6).

7. A parachute opening control system according to claim 1, characterized in that, The restraint parachute section (3) is stitched and constrained by the weak strong rope (12) to make the parachute in the initial state.

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