Series brake parachute system

Abstract

The invention discloses a series brake parachute system which comprises a main parachute, a brake parachute and at least two connecting ropes, and a parachute top hole is formed in the parachute top of the main parachute; the area of the brake parachute after being inflated is smaller than the area of the parachute top hole after the main parachute is inflated; and one end of each connecting rope is connected with the parachute top of the main parachute. The main parachute has the advantages that part of airflow entering the main parachute flows to the rear of the center of the main parachute through the parachute top hole, it is guaranteed that the airflow field behind the center of the main parachute is good, and conditions are provided for normal inflation and stability of the brake parachute; the length of each connecting rope can be greatly reduced, fluctuation similar to ship movement caused by the fact that the connecting ropes are too long is avoided, inflation stability of the series parachute system is guaranteed, the overall length of the series parachute system is greatly reduced, and the weight of the series parachute system is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of parachutes, and in particular to a tandem deceleration parachute system. Background Art

[0002] The parachute deceleration system has the advantages of light weight and good deceleration effect, and is widely used in the fields of aviation, aerospace, weapons and sports. The existing tandem parachute system (such as a multi-layer parachute aircraft protection system disclosed in application No. 201020113647.2) generally requires a distance of three or four times the inflated diameter of the main parachute canopy between the leading edge of the deceleration parachute and the top of the main parachute due to the influence of the large wake behind the main parachute, in order to ensure the normal inflation of the deceleration parachute. However, even with a long connecting rope, the deceleration parachute will still stay on the outer edge of the wake, and may rotate around the wake area or make irregular movements. At the same time, the long connecting rope will also produce fluctuations similar to the movement of a ship, which will then extend to the top of the main parachute and the deceleration parachute, thereby causing instability in the inflation of the tandem parachute system. Summary of the invention

[0003] The purpose of the present invention is to overcome the above technical deficiencies and propose a tandem deceleration parachute system to solve the technical problem in the prior art that a large wake is easily generated behind the main parachute during the operation of the tandem parachute system, resulting in unstable inflation of the tandem parachute system.

[0004] In order to achieve the above technical objectives, the technical solution of the present invention provides a tandem deceleration parachute system, comprising: A main parachute, wherein the top of the main parachute is provided with a top hole; A drag parachute, wherein the area of ​​the drag parachute after inflation is smaller than the area of ​​the top hole of the main parachute after inflation; At least two connecting ropes, one end of each connecting rope is connected to the top of the main parachute, and the other end of each connecting rope is connected to the bottom of the deceleration parachute.

[0005] Furthermore, the main parachute includes a first canopy and a plurality of first parachute ropes, one end of each of the first parachute ropes is connected to the base of the first canopy, and the other ends of each of the first parachute ropes are connected to each other.

[0006] Furthermore, the umbrella top hole is opened at the umbrella top of the first umbrella canopy.

[0007] Furthermore, the first canopy has a ring-shaped structure after being inflated.

[0008] Furthermore, after the first canopy is inflated, the area enclosed by each of the first canopy ropes is a conical structure.

[0009] Furthermore, the deceleration parachute includes a second canopy and a plurality of second parachute ropes, one end of each of the second parachute ropes is connected to the base of the second canopy, and the other ends of each of the second parachute ropes are connected to each other.

[0010] Furthermore, the second canopy has a ring-shaped structure after being inflated.

[0011] Furthermore, after the second canopy is inflated, the area enclosed by each of the second canopy ropes is a conical structure.

[0012] Furthermore, one end of each of the connecting ropes is connected to the top of the first umbrella canopy, and the other end of each of the connecting ropes is connected to the other end of each of the second umbrella ropes.

[0013] Furthermore, the connection points between each of the connecting ropes and the first umbrella canopy are circumferentially arranged on the outside of the umbrella top hole.

[0014] Compared with the prior art, the beneficial effects of the present invention include: during the operation of the tandem parachute system, part of the airflow entering the main parachute flows to the rear of the center of the main parachute through the parachute top hole, ensuring that the airflow field behind the center of the main parachute is good, providing conditions for the normal inflation and stability of the deceleration parachute; at the same time, because the airflow field behind the center of the main parachute is good, the length of each connecting rope can be greatly reduced, avoiding the connecting rope being too long and generating fluctuations similar to the movement of a ship, ensuring the stability of the inflation of the tandem parachute system, and greatly reducing the overall length of the tandem parachute system and the weight of the tandem parachute system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a tandem deceleration parachute system provided by the present invention; Figure 2 It is a structural schematic diagram of the airflow direction during the operation of a tandem deceleration parachute system provided by the present invention; In the figure: 100 - main parachute, 110 - parachute top hole, 120 - first parachute canopy, 130 - first parachute rope, 200 - deceleration parachute, 210 - second parachute canopy, 220 - second parachute rope, 300 - connecting rope, 400 - lifting rope. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] The present invention provides a series deceleration parachute system, the structure of which is as follows: Figure 1 - Figure 2As shown, it includes a main parachute 100, a deceleration parachute 200 and at least two connecting ropes 300. The top of the main parachute 100 is provided with a top hole 110. The area of ​​the deceleration parachute 200 after inflation is smaller than the area of ​​the top hole 110 of the main parachute 100 after inflation. One end of each of the connecting ropes 300 is connected to the top of the main parachute 100, and the other end of each of the connecting ropes 300 is connected to the bottom of the deceleration parachute 200.

[0018] During the operation of the tandem parachute system, part of the airflow entering the main parachute 100 flows to the rear of the center of the main parachute 100 through the parachute top hole 110, ensuring that the airflow field behind the center of the main parachute 100 is good, providing conditions for the normal inflation and stability of the deceleration parachute 200. At the same time, because the airflow field behind the center of the main parachute 100 is good, the length of each connecting rope 300 can be greatly reduced, avoiding the connecting rope 300 being too long and generating fluctuations similar to the movement of a ship, ensuring the stability of the inflation of the tandem parachute system, and greatly reducing the overall length of the tandem parachute system and the weight of the tandem parachute system.

[0019] As a preferred embodiment, please refer to Figure 1 The main parachute 100 includes a first canopy 120 and a plurality of first parachute lines 130, one end of each of the first parachute lines 130 is connected to the bottom of the first canopy 120, and the other ends of each of the first parachute lines 130 are connected to each other, thereby forming the overall structure of the main parachute 100, which is convenient for inflation of the first canopy 120.

[0020] As a preferred embodiment, please refer to Figure 1 The umbrella top hole 110 is opened at the umbrella top of the first umbrella canopy 120, so as to ensure that part of the airflow entering the first umbrella canopy 120 flows to the rear of the center of the first umbrella canopy 120 through the umbrella top hole 110.

[0021] As a preferred embodiment, please refer to Figure 1 The first canopy 120 has a ring-shaped structure after being inflated, which can ensure the stability of the first canopy 120 after being inflated.

[0022] As a preferred embodiment, please refer to Figure 1 After the first canopy 120 is inflated, the area enclosed by each of the first parachute ropes 130 is a conical structure, which can ensure the stability of the entire main parachute 100 after inflation.

[0023] As a preferred embodiment, please refer to Figure 1The deceleration parachute 200 includes a second canopy 210 and a plurality of second parachute ropes 220, one end of each of the second parachute ropes 220 is connected to the bottom of the second canopy 210, and the other ends of each of the second parachute ropes 220 are connected to each other, thereby forming the overall structure of the deceleration parachute 200, which is convenient for inflation of the second canopy 210.

[0024] As a preferred embodiment, please refer to Figure 1 The second canopy 210 has a ring structure after being inflated, which can ensure the stability of the second canopy 210 after being inflated.

[0025] As a preferred embodiment, please refer to Figure 1 After the second canopy 210 is inflated, the area enclosed by each of the second canopy ropes 220 is a conical structure, which can ensure the stability of the entire deceleration parachute 200 after inflation.

[0026] As a preferred embodiment, please refer to Figure 1 One end of each of the connecting ropes 300 is connected to the top of the first umbrella canopy 120, and the other end of each of the connecting ropes 300 is connected to the other end of each of the second umbrella ropes 220, which can ensure the stability of the entire tandem umbrella system.

[0027] As a preferred embodiment, please refer to Figure 1 The connection points between each of the connecting ropes 300 and the first canopy 120 are all circumferentially arranged outside the umbrella top hole 110, which can ensure the stability of the entire main parachute 100 after inflation.

[0028] As a preferred embodiment, please refer to Figure 1 The tandem deceleration parachute system also includes at least two hoisting ropes 400, one end of each of the hoisting ropes 400 is connected to the other end of each of the first parachute ropes 130, and one end of each of the hoisting ropes 400 is used to connect to the suspended object, thereby realizing the connection between the tandem parachute system and the suspended object.

[0029] In order to better understand the present invention, the following Figure 1 - Figure 2 The working principle of the technical solution of the present invention is described in detail: During the operation of the tandem parachute system, part of the airflow entering the main parachute 100 flows to the rear of the center of the main parachute 100 through the parachute top hole 110, ensuring that the airflow field behind the center of the main parachute 100 is good, providing conditions for the normal inflation and stability of the deceleration parachute 200. At the same time, because the airflow field behind the center of the main parachute 100 is good, the length of each connecting rope 300 can be greatly reduced, avoiding the connecting rope 300 being too long and generating fluctuations similar to the movement of a ship, ensuring the stability of the inflation of the tandem parachute system, and greatly reducing the overall length of the tandem parachute system and the weight of the tandem parachute system.

[0030] The tandem parachute system provided by the present invention has the following beneficial effects: (1) Greatly reducing the overall length and weight of the tandem parachute system; (2) Part of the airflow entering the main parachute 100 flows to the rear of the center of the main parachute 100 through the parachute top hole 110, ensuring a good airflow field behind the center of the main parachute 100, thus providing conditions for the normal inflation and stability of the deceleration parachute 200; (3) The airflow field behind the center of the main parachute 100 is good, which can greatly reduce the length of each connecting rope 300, avoid the connecting rope 300 being too long and causing fluctuations similar to the movement of a ship, and ensure the stability of the inflation of the tandem parachute system.

[0031] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tandem parachute system, characterized in that: include: A main parachute, wherein the top of the main parachute is provided with a top hole; A drag parachute, wherein the area of ​​the drag parachute after inflation is smaller than the area of ​​the top hole of the main parachute after inflation; At least two connecting ropes, one end of each connecting rope is connected to the top of the main parachute, and the other end of each connecting rope is connected to the bottom of the deceleration parachute.

2. The tandem parachute system according to claim 1, characterized in that: The main parachute includes a first canopy and a plurality of first parachute ropes, one end of each of the first parachute ropes is connected to the bottom of the first canopy, and the other ends of each of the first parachute ropes are connected to each other.

3. The tandem parachute system according to claim 2, characterized in that: The umbrella top hole is opened at the umbrella top of the first umbrella canopy.

4. The tandem parachute system according to claim 2, characterized in that: The first canopy has a ring structure after being inflated.

5. The tandem parachute system according to claim 2, characterized in that: After the first canopy is inflated, the area enclosed by the first canopy ropes is a conical structure.

6. The tandem parachute system according to claim 2, characterized in that: The deceleration parachute includes a second canopy and a plurality of second parachute ropes, one end of each of the second parachute ropes is connected to the bottom of the second canopy, and the other ends of each of the second parachute ropes are connected to each other.

7. The tandem parachute system according to claim 6, characterized in that: The second canopy has a ring structure after being inflated.

8. The tandem parachute system according to claim 6, characterized in that: After the second canopy is inflated, the area enclosed by each of the second canopy ropes is a conical structure.

9. The tandem parachute system according to claim 6, characterized in that: One end of each of the connecting ropes is connected to the top of the first umbrella canopy, and the other end of each of the connecting ropes is connected to the other end of each of the second umbrella ropes.

10. The tandem parachute system according to claim 9, characterized in that: The connection points between each of the connecting ropes and the first umbrella canopy are all circumferentially arranged on the outside of the umbrella top hole.

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