Parawing two-stage speed reduction device and method

Abstract

The invention discloses a parafoil two-stage speed reduction device and a parafoil two-stage speed reduction method. Comprising a stabilizing umbrella (1) and a stabilizing umbrella separating lock (15), the stabilizing parachute (1) is positioned above the parafoil system and is connected with the stabilizing parachute connecting belt (3) through the stabilizing parachute separating lock (15); the stable parachute (1) is firstly opened, the parafoil system is stably subjected to primary speed reduction, when the speed of the parafoil system meets the parachute opening speed of the main parachute, the stable parachute (1) is released through the stable parachute release lock (15), and then the main parachute is opened. The main parachute is prevented from being directly opened at a high machine speed, the canopy is prevented from being in direct contact with high-speed airflow, and the canopy is prevented from being broken or parachute cords are prevented from being broken, so that parachuting safety is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the application in airborne system, specifically, it is a parafoil two-stage deceleration device and method. Background Art

[0002] Because the canopy material of the wing parachute is a zero-air permeability coating material, and the wing parachute opens faster than the round parachute, the overload of the opening is much greater than that of the round parachute, especially in the case of high altitude and high speed, the overload value is far higher than that of ordinary skydiving. The greater the overload value, the more serious the impact and consequences on the human body, and it may even cause the canopy to break and the parachute rope to break.

[0003] In general, in sports skydiving or low-altitude and low-speed parachuting, the main parachute is opened immediately. That is, after the skydiver leaves the aircraft, the main parachute seal is opened by pulling the rope or hand, which directly inflates the main parachute and decelerates it.

[0004] Since the maximum opening height, maximum opening speed and maximum parachuting weight of military high-altitude heavy-load parafoils have reached or exceeded the limits of similar domestic products, the canopy area is about 50% larger than that of ordinary military parafoils, and the maximum parachuting weight is about 50% larger. Opening the parachute immediately after leaving the aircraft not only fails to meet the requirements of combat technical indicators, but may even cause the main parachute system to break and fail.

[0005] To ensure the normal and safe operation of the system, it is necessary to avoid the main parachute from opening directly when the system speed is high. Through the two-stage deceleration technology for parachute opening, the system can be decelerated by one stage before the main parachute opens, and the speed can be within the safe range before the main parachute opens. Summary of the invention

[0006] The object of the present invention is to provide a parafoil two-stage deceleration device and method.

[0007] The technical solution to achieve the purpose of the present invention is: a two-stage deceleration device for a wing parachute, including a stabilizing parachute and a stabilizing parachute release lock; the stabilizing parachute is located above the wing parachute system and is connected to the stabilizing parachute connecting belt through the stabilizing parachute release lock.

[0008] Furthermore, the stable umbrella comprises a stable umbrella canopy, a mesh, a reinforcing belt, an inner umbrella rope and a large ring; the stable umbrella is an inverted cone, the stable umbrella canopy is the upper part of the inverted cone, the mesh is the lower part of the inverted cone, and the lower end of the stable umbrella canopy and the upper end of the mesh are connected together by sewing and splicing; the reinforcing belt is the force transmission structure of the stable umbrella, which is radially attached to the outer surface of the stable umbrella, that is, the outer surface after the stable umbrella canopy and the mesh are sewn together; the inner umbrella rope is the aerodynamic shape support of the stable umbrella after the area is changed, the upper end of the inner umbrella rope is connected to the stable umbrella canopy by sewing, and the lower end is connected to the bottom of the mesh; the large ring is the connection structure between the stable umbrella and the umbrella bag strap, the upper end is connected to the bottom of the stable umbrella, and the lower end is connected to the stable umbrella release lock.

[0009] Furthermore, the stabilizing parachute detachment lock is composed of a middle circular ring, a small circular ring, a detachment lock main part, an umbrella opener pad and a protective cloth; the detachment lock main part is the main component of the stabilizing parachute detachment lock, and is a structure designed by combining a flexible textile, a reinforcing belt and metal parts. The main body of the detachment lock is a rectangular fabric, and from top to bottom in the front view direction, they are the middle circular ring, the reinforcing belt for fixing the middle circular ring, the small circular ring, and the reinforcing belt for fixing the small circular ring. The two reinforcing belts are overlapped and sewn with the rectangular fabric main body. The middle circular ring, the small circular ring and the large circular ring on the stabilizing parachute 1 can be looped to form a "three-ring structure", and a metal umbrella opener pad is placed in the interlayer of the rectangular fabric main body, and a protective cloth is arranged in the rear view direction; the middle circular ring and the small circular ring in the stabilizing parachute detachment lock and the large circular ring in the stabilizing parachute together form a three-ring structure of large, medium and small circular rings.

[0010] Furthermore, the protective cloth can be turned over to protect the key part of the stable umbrella from being locked.

[0011] A two-stage deceleration method for a parafoil comprises the following steps: firstly opening a stabilizing parachute to allow the parafoil system to stably perform a first-stage deceleration; when the speed of the parafoil system meets the opening speed of the main parachute, the stabilizing parachute is released by releasing a stabilizing parachute from a lock, and then the main parachute is opened.

[0012] Furthermore, during the deceleration process of the stabilized parachute, the parachute opener pad placed in the interlayer of the main part of the detachment lock is used to prevent the stabilized parachute from being twisted and deformed due to the tension of the stabilized parachute, thereby causing the stabilized parachute to detach prematurely; during the deceleration process of the stabilized parachute, the stabilized parachute detachment lock is connected to maintain a stable connection with the wing parachute system.

[0013] Furthermore, the middle ring and the small ring in the stabilizing parachute release lock, together with the large ring in the stabilizing parachute, form a three-ring connection structure of large, medium and small rings, ensuring that the stabilizing parachute can be released smoothly after the deceleration work is completed; the deceleration work of the stabilizing parachute is controlled by the stabilizing parachute release lock, and the secondary deceleration program of the wing parachute is directly controlled.

[0014] Compared with the prior art, the present invention has significant advantages: first, the present invention can enable the system to stably perform a first-stage deceleration. During the deceleration process of the stabilizing parachute, the parachute opener pad (19) of the detachment lock main part (18) can prevent the stabilizing parachute (1) from being twisted and deformed in advance, and the stabilizing parachute (1) maintains a stable connection relationship with the system during the deceleration process; second, the system can safely and reliably release the stabilizing parachute. The middle ring (16) and the small ring (17) in the stabilizing parachute detachment lock (15) together with the large ring (14) in the stabilizing parachute (1) form a three-ring connection structure of large, medium and small rings, thereby ensuring that the stabilizing parachute (1) is smoothly detached after the deceleration work is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the two-stage parachute opening procedure of the present invention.

[0016] Figure 2 The invention relates to a parafoil system.

[0017] Figure 3 The invention relates to a stable umbrella.

[0018] Figure 4 The invention discloses a stable parachute release lock.

[0019] Figure 5 It is a three-ring connection of the present invention.

[0020] Figure 6 The present invention is a flow chart of the parachute landing two-stage parachute opening. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] The present invention designs a two-stage parachute opening method, that is, firstly, the stabilizing parachute is opened to decelerate the system, and then the main parachute is opened when the system speed meets the main parachute opening speed. This avoids the situation that the canopy is directly exposed to high-speed airflow when the main parachute is opened directly at high speed, which may cause the canopy to break or the parachute rope to break, thus ensuring the safety of parachuting. Figure 1 shown.

[0023] The two-stage deceleration parachute opening device comprises two components: a stabilizing parachute 1 and a stabilizing parachute release lock 15 .

[0024] The stable parachute 1 is mainly composed of a stable parachute canopy 10, a mesh 11, a reinforcing belt 12, an inner parachute rope 13 and a large ring 14. Figure 3 shown.

[0025] The escape lock 15 is mainly composed of a middle ring 16, a small ring 17, an escape lock main part 18, an opener pad 19 and a protective cloth 20. Figure 4 shown.

[0026] Connection

[0027] When the umbrella is packed, the large ring 14 on the stabilizer 1 is connected with the middle ring 16 and the small ring 17 on the stabilizer release lock 15 to form a three-ring connection. Figure 5 shown.

[0028] Workflow

[0029] The process of parachuting second level parachute opening is as follows:

[0030] A1: The skydiver leaves the aircraft;

[0031] A2: Pull out the parachute with the parachute rope;

[0032] A3: The stable parachute is inflated and fully opened, and the parachute bag is connected through the connecting belt to perform the first-level deceleration;

[0033] A4: The parachute opener works after a delay of 4s to 5s, and the parachute is pulled out to stabilize the parachute and release the parachute opener pin at the lock;

[0034] A5: The connecting belt of the stabilizer parachute is released, and the center rope is stressed;

[0035] A6: Open the inner seal of the center rope and pull out the main parachute;

[0036] A7: The main parachute is fully inflated and the second stage of deceleration is performed.

[0037] From the parachute opening process to the steady descent process, see Figure 6 .

[0038] The invention has been tested and verified, and has been put into use. The product has good performance and can meet various index requirements.

Claims

1. A parafoil two-stage deceleration device, characterized in that: It comprises a stabilizing parachute (1) and a stabilizing parachute release lock (15); the stabilizing parachute (1) is located above the parafoil system and is connected to a stabilizing parachute connection belt (3) via the stabilizing parachute release lock (15).

2. The parafoil two-stage deceleration device according to claim 1, characterized in that: The stable umbrella (1) comprises a stable umbrella canopy (10), a mesh (11), a reinforcing belt (12), an inner umbrella rope (13) and a large circular ring (14); the stable umbrella (1) is in an inverted cone shape, the stable umbrella canopy (10) is the upper half of the inverted cone, the mesh (11) is the lower half of the inverted cone, and the lower end of the stable umbrella canopy (10) is connected to the upper end of the mesh (11); the reinforcing belt (12) is radially attached to the outer surface of the stable umbrella (1); the upper end of the inner umbrella rope (13) is connected to the stable umbrella canopy (10), and the lower end is connected to the bottom of the mesh (11); the upper end of the large circular ring (14) is connected to the bottom of the stable umbrella (1), and the lower end is connected to the stable umbrella release lock (15).

3. The parafoil two-stage deceleration device according to claim 1, characterized in that: The stable parachute release lock (15) is composed of a middle circular ring (16), a small circular ring (17), a release lock main part (18), a parachute opener pad (19) and a protective cloth (20); the release lock main part (18) is a main part of the stable parachute release lock (15), and the main body of the release lock main part (18) is a rectangular fabric, which is sequentially composed of the middle circular ring (16), a reinforcing belt for fixing the middle circular ring (16), a small circular ring (17), and a reinforcing belt for fixing the small circular ring (17) from top to bottom in the front view direction. The reinforcing belt is overlapped and sewn with the rectangular fabric body, and the middle circle ring (16), the small circle ring (17) and the large circle ring (14) on the stabilizing parachute 1 can be looped to form a "three-ring structure", and a metal parachute opener pad (19) is placed in the interlayer of the rectangular fabric body, and a protective cloth (20) is arranged in the rearward direction; the middle circle ring (16) and the small circle ring (17) in the stabilizing parachute release lock (15) and the large circle ring (14) in the stabilizing parachute (1) together form a three-ring structure of large, middle and small circles.

4. The parafoil two-stage deceleration device according to claim 3, characterized in that: The protective cloth (20) can be turned over to protect the key part of the stable umbrella from the lock (15).

5. A parafoil two-stage deceleration method, characterized in that: Firstly, the stabilizing parachute (1) is opened to stably decelerate the parafoil system in the first stage. When the speed of the parafoil system meets the opening speed of the main parachute, the stabilizing parachute (1) is released through the stabilizing parachute release lock (15), and then the main parachute is opened.

6. The parafoil two-stage deceleration method according to claim 5, characterized in that: During the deceleration process of the stabilized parachute (1), the parachute opener pad (19) placed in the interlayer of the detachment lock main part (18) is used to prevent the stabilized parachute detachment lock (15) from being twisted and deformed due to the pulling force of the stabilized parachute (1), thereby causing the stabilized parachute (1) to detach in advance; during the deceleration process of the stabilized parachute (1), the stabilized parachute detachment lock (15) is connected to maintain a stable connection relationship with the parafoil system.

7. The parafoil two-stage deceleration method according to claim 5, characterized in that: The middle circle ring (16) and the small circle ring (17) in the stabilizing parachute release lock (15) together with the large circle ring (14) in the stabilizing parachute (1) form a three-ring connection structure of large, middle and small circles, ensuring that the stabilizing parachute (1) is smoothly released after the deceleration work is completed; the deceleration work of the stabilizing parachute (1) is controlled by the stabilizing parachute release lock (15), and the secondary deceleration program of the parafoil is directly controlled.

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