Guide parachute structure for traction parachute system

Abstract

The invention discloses a guide parachute structure for a traction parachute system, comprising a parachute canopy, a circular ring and an elastic component; the parachute canopy comprises a top width, a blast width and a surrounding width, the top width is located in the center, the blast width and the surrounding width are respectively distributed around the outer circle and the inner circle of the bottom edge of the top width, all the blast widths and the surrounding widths are connected to the bottom port position of the packaging container at both ends of the bottom edge, a convergence buckle is provided in the middle of the bottom edge of the blast width, and a vent is provided on the surrounding width; the circular ring is installed on the bottom edges of all the surrounding widths; the elastic component corresponds to the blast width one by one, and comprises two torsion springs, both of which are sleeved on the circular ring and connected at one end to form an outer arc and at the other end to form an inner arc, the outer arc is connected to the bottom edge of the blast width, and the inner arc is connected to the surrounding width; the surrounding widths on opposite sides are connected in pairs by limiting ropes; initially all the convergence buckles are converged together by program ropes. The invention has the advantages of anti-top collapse, high reliability, small overload, fast parachute opening, and anti-interference, and is suitable for airdrop conditions at high altitude, high speed, and large tonnage.

Description

Technical Field

[0001] The invention belongs to the field of heavy equipment airdrop, and in particular relates to a guide parachute structure for a traction parachute system. Background Art

[0002] When heavy equipment is airdropped, the method of traction out of the aircraft is generally adopted. The traction parachute system is the first-level parachute system of the heavy airdrop system. The traction parachute system includes a guide parachute, a traction parachute, a traction rope, a packaging container, etc. First, the guide parachute is deployed to generate aerodynamic resistance, the traction rope is straightened, and the packaging container is unsealed, so that the traction parachute in the packaging container is deployed in an orderly manner, and then the traction parachute generates a constant force to pull the equipment out of the aircraft cargo hold through the traction rope. The reliability of the traction parachute system is related to the safety of the aircraft and the equipment. How to ensure the safe departure of the traction parachute system, quickly leave the aircraft wake area, ensure the smooth opening of the traction parachute, and pull the equipment out of the aircraft cargo hold according to the predetermined procedure is one of the key points in the design of the heavy equipment system.

[0003] For airdropping equipment from large aircraft, in order to allow the tow parachute to escape from the aircraft's wake zone, the length of the tow rope is 5 to 7 times the maximum diameter of the aircraft fuselage. The length of the tow rope suitable for large aircraft is generally greater than 30 meters, and about 50 meters is commonly used. This way, the tow parachute can avoid the aircraft's wake. This also means that the tow rope is heavy, accounting for more than two-thirds of the weight of the entire tow parachute system, and the guide parachute needs to straighten the tow rope, so its reliability and speed of operation are very important.

[0004] At present, when the guide parachute is straightening the traction rope, under the action of high gravity, a vertical downward force will be generated at the connection between the guide parachute rope ring and the packaging container, which makes the canopy inflation state not good and easily affected by the aircraft wake. If the inflation is abnormal, constant aerodynamic resistance cannot be generated. The unstable operation of the guide parachute in the airflow may cause the traction rope to collide with the bottom plate of the aircraft, causing damage to the main part of the rope and triggering accidents in the towing process. In this process, the heavy equipment in the aircraft cabin is still connected to the traction parachute system. If the guide parachute does not work properly, it will endanger the aircraft's control stability and the safety of the system. Summary of the invention

[0005] The purpose of the present invention is to provide a guide parachute structure for a towing parachute system. The present invention has the advantages of preventing top collapse, high reliability, low overload, fast parachute opening and anti-interference, and is suitable for airdrop conditions at high altitudes, high speeds and large tonnage.

[0006] The technical solution adopted by the present invention is:

[0007] A guide parachute structure for a traction parachute system comprises a canopy, a circular ring and an elastic component; the canopy comprises a top width, a blast width and a surrounding width, the top width is located in the center, the blast width and the surrounding width are respectively distributed around the outer circle and the inner circle of the bottom edge of the top width and correspond one to one, all the blast widths and the surrounding widths are connected to the bottom port position of a packaging container at both ends of the bottom edge, a convergence buckle is provided in the middle of the bottom edge of the blast width, and a vent is provided on the surrounding width; the size of the circular ring matches the bottom port of the packaging container, and the circular ring is installed on the bottom edges of all the surrounding widths; the elastic component corresponds one to one to the blast width, and comprises two torsion springs, both of which are sleeved on the circular ring and connected at one end to form an outer arc and at the other end to form an inner arc, the outer arc is connected to the corresponding bottom edge of the blast width, and the inner arc is connected to the corresponding surrounding width; the surrounding widths on opposite sides are connected in pairs by limiting ropes to keep the inner arc tensioned inwardly; initially, all the convergence buckles are converged together by program ropes to converge the outer arc in the packaging container.

[0008] Furthermore, the air blowing width and the surrounding width are connected to the bottom port position of the packaging container through fixed buckles and ropes at both ends of the bottom edge.

[0009] Furthermore, the outer arc is connected to the bottom edge of the blast width through a fixing belt and a fixing belt loop, and the inner arc is connected to the surrounding width through a fixing belt and a fixing belt loop.

[0010] Furthermore, the two torsion springs are sleeved together at the ends through a sleeve and crimped and fixed.

[0011] Furthermore, the ventilation holes on the skirt are cross-shaped cutouts.

[0012] Furthermore, the top width is circular, and the blast width and the surrounding width are isosceles trapezoids.

[0013] Furthermore, the edges of the top width, the blast width and the surrounding width are all provided with reinforcement belts.

[0014] Furthermore, the air blowing web is made of a low air permeability fabric material.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, the canopy, the circular ring and the elastic component form a semi-rigid structure, the circular ring ensures the shape of the canopy fixed on the packaging container, and can form a stable aerodynamic resistance. After the program rope unties the restraint of the convergent buckle, the inner arc of the elastic component remains tensioned inward, and the outer arc quickly bounces outward to form a resistance surface, and the inflation width quickly forms a inflation hood, and the injected air passes through the surrounding width through the air vents and enters the top width to inflate the top width to prevent the top from collapsing. In the present invention, the canopy is directly connected to the packaging container, and the aerodynamic resistance generated does not need to be transmitted through the parachute rope, thereby improving the working procedure and enhancing the system reliability. In the present invention, the elastic component can not only share the overload of parachute opening, but also assist in quickly forming the inflation hood, making the parachute opening fast and reducing the parachute opening time. Even in the wake area, it is less affected by airflow disturbance and is resistant to interference. It is suitable for airdrop conditions at high altitudes, high speeds and large tonnages, and its practicality is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a flowchart of the guide parachute structure for the tow parachute system in an embodiment of the present invention, wherein (a) is the initial state, (b) is when the program rope is unlocked, and (c) is when the tow parachute is opened.

[0018] Figure 2 Schematic diagram of a guide parachute structure for a towing parachute system in an embodiment of the present invention.

[0019] Figure 3 It is a top view of an open umbrella canopy in an embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the formation of the blast hood in an embodiment of the present invention.

[0021] Figure 5 Schematic diagram of an elastic component in an embodiment of the present invention.

[0022] Figure 6 Schematic diagram of the installation of the elastic component in the embodiment of the present invention.

[0023] Figure 7 It is a partial connection principle diagram of the surrounding width, elastic components, circular rings, limiting ropes, fixing belt loops, top width, and blast width in an embodiment of the present invention.

[0024] In the figure: 1-parachute canopy; 2-circumference; 3-elastic component; 4-circumferential ring; 5-limiting rope; 6-fixing belt loop; 7-top width; 8-blowing width; 9-reinforcement belt; 10-torsion spring one; 11-torsion spring two; 12-fixing belt; 13-fixing buckle loop; 14-convergence buckle loop; 15-sleeve; A-traction rope; B-packaging container; C-procedure rope; D-guide parachute; E-traction parachute. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1 to 7 As shown, a guide parachute structure for a traction parachute system comprises a canopy 1, a circular ring member 4 and an elastic component 3; the canopy 1 comprises a top sheet 7, a blasting sheet 8 and a surrounding sheet 2, the top sheet 7 is located in the center, the blasting sheet 8 and the surrounding sheet 2 are respectively distributed around the outer circle and the inner circle of the bottom edge of the top sheet 7 and correspond to each other, all the blasting sheets 8 and the surrounding sheets 2 are connected to the bottom port position of the packaging container B at both ends of the bottom edge, a convergence buckle 14 is provided in the middle of the bottom edge of the blasting sheet 8, and a vent hole is provided on the surrounding sheet 2; the size of the circular ring member 4 matches the bottom port of the packaging container B, and the circular ring member 4 is arranged Installed on the bottom edge of all the surrounding widths 2; the elastic component 3 corresponds to the blast width 8 one by one, including two torsion springs (10, 11), the two torsion springs (10, 11) are both sleeved on the circular ring member 4 and connected at one end to form an outer arc and at the other end to form an inner arc, the outer arc is connected to the bottom edge of the corresponding blast width 8, and the inner arc is connected to the corresponding surrounding width 2; the surrounding widths 2 on the opposite sides are connected in pairs by limiting ropes 5 to keep the inner arc tensioned inwardly; initially, all the convergence buckles 14 are converged together by the program rope C to make the outer arc converge in the packaging container B.

[0027] like Figure 2 , 3 As shown in FIG. 4 , in this embodiment, the air blowing width 8 and the surrounding width 2 are connected to the bottom port position of the packaging container B through fixed buckles 13 and ropes at both ends of the bottom edge.

[0028] like Figure 2 , 4 As shown in FIG. 6 , in this embodiment, the outer arc is connected to the bottom edge of the blast width 2 through the fixing belt 12 and the fixing belt loop 6 , and the inner arc is connected to the surrounding width 2 through the fixing belt 12 and the fixing belt loop 6 .

[0029] like Figure 3 As shown, in this embodiment, the top width 7 is circular, and the blast width 8 and the surrounding width 2 are isosceles trapezoids.

[0030] like Figure 3 , 4 As shown in FIG. 7 , in this embodiment, the edges of the top width 7 , the blast width 8 and the surrounding width 2 are all provided with reinforcement belts 9 .

[0031] like Figure 5 As shown, in this embodiment, two torsion springs (10, 11) are sleeved together at the ends through a sleeve 15 and crimped and fixed.

[0032] In this embodiment, the ventilation holes on the skirt 2 are cross-shaped cutouts.

[0033] In this embodiment, the air blowing web 8 is made of a low air permeability fabric material.

[0034] In the present invention, the canopy 1, the circular ring member 4 and the elastic component 3 form a semi-rigid structure. The circular ring member 4 ensures the shape of the canopy 1 fixed on the packaging container B, and can form a stable aerodynamic resistance. After the program rope C unties the restraint of the convergence buckle 14, the inner arc of the elastic component 3 remains tensioned inwardly, and the outer arc quickly bounces outwardly to form a resistance surface. The blowing width 8 quickly forms a blowing hood, and the injected air passes through the surrounding width 2 through the air vents and enters the top width 7 to inflate the top width 7 to prevent the top from collapsing. In the present invention, the canopy 1 is directly connected to the packaging container B, and the aerodynamic resistance generated does not need to be transmitted through the parachute rope, thereby improving the working procedure and increasing the system reliability. In the present invention, the elastic component 3 can not only share the overload of parachute opening, but also assist in quickly forming a blowing hood, quickly opening the parachute, and reducing the opening time. Even in the wake area, it is less affected by airflow disturbances and is resistant to interference. It is suitable for airdrop conditions at high altitudes, high speeds, and large tonnages, and its practicality is significantly improved.

[0035] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A guide parachute structure for a traction parachute system, characterized in that: It comprises an umbrella canopy, a circular ring and an elastic component; the umbrella canopy comprises a top panel, an air-blowing panel and a surrounding panel, the top panel is located in the center, the air-blowing panel and the surrounding panel are respectively distributed around the outer circle and the inner circle of the bottom edge of the top panel and correspond one to one, all the air-blowing panels and the surrounding panel are connected to the bottom port of the packaging container at both ends of the bottom edge, a convergence buckle is provided in the middle of the bottom edge of the air-blowing panel, and a vent is provided on the surrounding panel; the size of the circular ring matches the bottom port of the packaging container, and the circular ring is installed on the bottom edges of all the surrounding panels; the elastic component corresponds one to one to the air-blowing panel, and comprises two torsion springs, both of which are sleeved on the circular ring and connected at one end to form an outer arc and at the other end to form an inner arc, the outer arc is connected to the corresponding bottom edge of the air-blowing panel, and the inner arc is connected to the corresponding surrounding panel; the surrounding panels on opposite sides are connected in pairs by limiting ropes to keep the inner arc tensioned inward; initially, all the convergence buckles are converged together by program ropes to converge the outer arc in the packaging container.

2. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The blast width and the surrounding width are connected to the bottom port position of the packaging container through fixed buckles and ropes at both ends of the bottom edge.

3. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The outer arc is connected to the bottom edge of the blast width through a fixing belt and a fixing belt loop, and the inner arc is connected to the surrounding width through a fixing belt and a fixing belt loop.

4. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The two torsion springs are sleeved together at the ends through a sleeve and crimped and fixed.

5. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The ventilation holes on the skirt are cross-shaped cutouts.

6. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The top is circular, and the blast width and the surrounding width are isosceles trapezoids.

7. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The edges of the top panel, blast panel and surrounding panel are all provided with reinforcement belts.

8. The guide parachute structure for a traction parachute system according to claim 1, characterized in that: The air-blowing panel is made of low air permeability fabric material.

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