Series brake parachute system

Abstract

The utility model 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 portion of the center of the main parachute through the parachute top hole, it is guaranteed that the airflow flow 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 utility model relates to the technical field of parachutes, in particular to a series 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, ordnance and sports. For the existing series parachute system (such as a multi-layer parachute aircraft protection system disclosed in the patent application No. 201020113647.2), due to the influence of the large wake behind the main parachute, in order to ensure the normal inflation of the deceleration parachute, it is generally required that the distance between the leading edge of the deceleration parachute and the apex of the main parachute is three or four times the inflation diameter of the main parachute canopy. However, even with a long connecting rope, the deceleration parachute still stays at the outer edge of the wake and may rotate around the wake area or move irregularly. At the same time, the long connecting rope will also generate fluctuations similar to ship movements, which will then extend to the apex of the main parachute and the deceleration parachute, thus causing instability in the inflation of the series parachute system. Summary of the Utility Model

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

[0004] To achieve the above technical purpose, the technical solution of the utility model provides a series deceleration parachute system, including:

[0005] A main parachute, with a canopy hole opened at the apex of the main parachute;

[0006] A deceleration parachute, the area of the deceleration parachute after inflation being smaller than the area of the canopy hole of the main parachute after inflation;

[0007] At least two connecting ropes, one end of each connecting rope being connected to the apex of the main parachute, and the other end of each connecting rope being connected to the bottom of the deceleration parachute.

[0008] Further, the main parachute includes a first canopy and a plurality of first suspension lines, one end of each first suspension line being connected to the bottom of the first canopy, and the other ends of the first suspension lines being connected to each other.

[0009] Further, the canopy hole is opened at the apex of the first canopy.

[0010] Further, the first canopy is in an annular structure after inflation.

[0011] Further, after the first canopy is inflated, the area enclosed by the first suspension lines is in a conical structure.

[0012] Furthermore, the drogueshute includes a second canopy and a plurality of second shroud lines. One end of each of the second shroud lines is connected to the bottom of the second canopy, and the other ends of the second shroud lines are connected to each other.

[0013] Furthermore, after being inflated, the second canopy assumes an annular structure.

[0014] Furthermore, after the second canopy is inflated, the area enclosed by the second shroud lines is a conical structure.

[0015] Furthermore, one end of each of the connecting lines is connected to the top of the first canopy, and the other end of each of the connecting lines is connected to the other end of each of the second shroud lines.

[0016] Furthermore, the connection points of the connecting lines with the first canopy are circumferentially arranged outside the canopy top hole.

[0017] Compared with the prior art, the beneficial effects of the present utility model include: during the operation of the tandem parachute system, a part of the airflow entering the main parachute flows through the canopy top hole to the rear of the center of the main parachute, ensuring a good airflow field behind the center of the main parachute, providing conditions for the normal inflation and stability of the drogueshute. At the same time, because the airflow field behind the center of the main parachute is good, the lengths of the connecting lines can be greatly reduced, avoiding the fluctuations similar to ship movements caused by too long connecting lines, ensuring the stable inflation of the tandem parachute system, greatly reducing the overall length of the tandem parachute system, and reducing the weight of the tandem parachute system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a tandem drogueshute system provided by the present utility model;

[0019] Figure 2 is a schematic structural diagram of the airflow direction during the operation of a tandem drogueshute system provided by the present utility model;

[0020] In the figure: 100 - main parachute, 110 - canopy top hole, 120 - first canopy, 130 - first shroud line, 200 - drogueshute, 210 - second canopy, 220 - second shroud line, 300 - connecting line, 400 - lifting line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] The utility model provides a series - type deceleration parachute system, and its structure is as follows Figure 1 - Figure 2 shown, including a main parachute 100, a deceleration parachute 200 and at least two connecting ropes 300. An apex hole 110 is opened at the apex of the main parachute 100; the area of the deceleration parachute 200 after inflation is smaller than the area of the apex hole 110 of the main parachute 100 after inflation; one end of each connecting rope 300 is connected to the apex of the main parachute 100, and the other end of each connecting rope 300 is connected to the bottom of the deceleration parachute 200.

[0023] During the working process of the series - type parachute system, part of the air flow entering the main parachute 100 flows through the apex hole 110 to the rear of the center of the main parachute 100, ensuring a good air flow field behind the center of the main parachute 100, providing conditions for the normal inflation and stability of the deceleration parachute 200. At the same time, because the air flow field behind the center of the main parachute 100 is good, the lengths of the connecting ropes 300 can be greatly reduced, avoiding the fluctuations similar to ship movement caused by the excessive length of the connecting ropes 300, ensuring the stability of the inflation of the series - type parachute system, greatly reducing the overall length of the series - type parachute system, and reducing the weight of the series - type parachute system.

[0024] As a preferred embodiment, please refer to Figure 1 , the main parachute 100 includes a first parachute canopy 120 and a plurality of first suspension lines 130. One end of each first suspension line 130 is connected to the bottom of the first parachute canopy 120, and the other ends of the first suspension lines 130 are connected to each other, thereby forming the overall structure of the main parachute 100, facilitating the inflation of the first parachute canopy 120.

[0025] As a preferred embodiment, please refer to Figure 1 , the apex hole 110 is opened at the apex of the first parachute canopy 120, so as to ensure that part of the air flow entering the first parachute canopy 120 flows through the apex hole 110 to the rear of the center of the first parachute canopy 120.

[0026] As a preferred embodiment, please refer to Figure 1 , the first parachute canopy 120 is in an annular structure after inflation, which can ensure the stability of the first parachute canopy 120 after inflation.

[0027] As a preferred embodiment, please refer to Figure 1 , after the first parachute canopy 120 is inflated, the area enclosed by the first suspension lines 130 is in a conical structure, which can ensure the stability of the entire main parachute 100 after inflation.

[0028] As a preferred embodiment, please refer to Figure 1, the drag parachute 200 includes a second parachute canopy 210 and a plurality of second suspension lines 220. One end of each of the second suspension lines 220 is connected to the bottom of the second parachute canopy 210, and the other ends of the second suspension lines 220 are connected to each other, thereby forming the overall structure of the drag parachute 200 to facilitate the inflation of the second parachute canopy 210.

[0029] As a preferred embodiment, please refer to Figure 1 , after the second parachute canopy 210 is inflated, it has an annular structure, which can ensure the stability of the second parachute canopy 210 after inflation.

[0030] As a preferred embodiment, please refer to Figure 1 , after the second parachute canopy 210 is inflated, the area enclosed by the second suspension lines 220 has a conical structure, which can ensure the stability of the entire drag parachute 200 after inflation.

[0031] As a preferred embodiment, please refer to Figure 1 , one end of each of the connecting lines 300 is connected to the top of the first parachute canopy 120, and the other end of each of the connecting lines 300 is connected to the other end of each of the second suspension lines 220, which can ensure the stability of the entire series parachute system.

[0032] As a preferred embodiment, please refer to Figure 1 , the connection points of the connecting lines 300 with the first parachute canopy 120 are circumferentially arranged outside the canopy hole 110, which can ensure the stability of the entire main parachute 100 after inflation.

[0033] As a preferred embodiment, please refer to Figure 1 , the series drag parachute system further includes at least two lifting ropes 400. One end of each of the lifting ropes 400 is connected to the other end of each of the first suspension lines 130, and one end of each of the lifting ropes 400 is used to connect to the object to be lifted, so as to realize the connection between the series parachute system and the object to be lifted.

[0034] To better understand the present invention, the working principle of the technical solution of the present invention will be described in detail below in conjunction with Figure 1 - Figure 2 :

[0035] During the operation of the tandem parachute system, a part of the airflow entering the main parachute 100 flows through the top hole 110 of the parachute towards the rear of the center of the main parachute 100, ensuring a good airflow field at the rear of the center of the main parachute 100, providing conditions for the normal inflation and stability of the deceleration parachute 200. At the same time, because the airflow field at the rear of the center of the main parachute 100 is good, the lengths of the connecting ropes 300 can be greatly reduced, avoiding the situation where the connecting ropes 300 are too long and generating fluctuations similar to ship movements, ensuring the stability of the inflation of the tandem parachute system, greatly reducing the overall length of the tandem parachute system, and reducing the weight of the tandem parachute system.

[0036] The tandem deceleration parachute system provided by the present utility model has the following beneficial effects:

[0037] (1) Greatly reduces the overall length of the tandem parachute system and reduces the weight of the tandem parachute system;

[0038] (2) A part of the airflow entering the main parachute 100 flows through the top hole 110 of the parachute towards the rear of the center of the main parachute 100, ensuring a good airflow field at the rear of the center of the main parachute 100, providing conditions for the normal inflation and stability of the deceleration parachute 200;

[0039] (3) The airflow field at the rear of the center of the main parachute 100 is good, which can greatly reduce the lengths of the connecting ropes 300, avoid the connecting ropes 300 being too long and generating fluctuations similar to ship movements, and ensure the stability of the inflation of the tandem parachute system.

[0040] The specific embodiments of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

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

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

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

4. The tandem deceleration parachute system according to claim 2, wherein The first parachute canopy forms an annular structure after inflation.

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

6. The tandem deceleration parachute system according to claim 2, wherein The drag parachute includes a second parachute canopy and a plurality of second parachute ropes, one end of each second parachute rope being connected to the bottom of the second parachute canopy, and the other ends of the second parachute ropes being connected to each other.

7. The tandem deceleration parachute system according to claim 6, wherein The second parachute canopy forms an annular structure after inflation.

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

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

10. The tandem deceleration parachute system according to claim 9, characterized in that, The connection points of each connecting rope with the first parachute canopy are circumferentially arranged outside the parachute top hole.

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