Traction parachute system suitable for large-tonnage reloading air-drop
By designing a towing parachute with a top and a surround, the problem of unstable umbrella shape when the large tonnage cargo table is towed off the aircraft in the prior art is solved, and the effect of maintaining stability and large tonnage traction capability in the aircraft wake is achieved.
Patent Information
- Application Number
- CN202411981959.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-28
AI Technical Summary
The existing traction umbrella system can meet the stability requirements in the traction task of the ten-ton cargo platform, but when the traction task is upgraded to the 20-ton cargo platform, the original umbrella cannot remain stable in the wake, and the swing amplitude may interfere with the tail of the aircraft, which is extremely risky to traction off the aircraft.
A traction parachute system suitable for large tonnage heavy airdrops was designed, and the top layer was designed with a round top layer. The top layer was divided into eight parts, each part was approximately isosceles trapezoidal, and its bottom was respectively connected to the surroundings of the top layer to ensure high stability in the turbulent airflow of the aircraft wake.
This design can maintain the magnitude and direction of the traction force while meeting the large tonnage airdrop, ensuring that the large tonnage cargo table is safely off the aircraft without offset or bumping.
Smart Images
Figure CN119705833A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of airborne airdrop, and in particular, is a towing parachute system suitable for large-tonnage heavy-load airdrop. Background Art
[0002] The towing parachute is used to pull the cargo platform of the airdrop system out of the cabin, realize the cargo platform out of the aircraft and deploy the subsequent parachute system. The towing parachute system usually consists of a towing parachute canopy, a towing parachute bag, a towing rope, a suspension device, etc. It is usually set on the tail door of the aircraft. After being dropped, it is inflated and expanded in the airflow outside the aircraft, generating aerodynamic force, pulling the cargo platform, and realizing towing off the aircraft.
[0003] The current towing parachute system can only meet the requirements of towing 10-ton airdrop systems off the aircraft. For airdrop systems above 10 tons, while the required traction and strength increase, better stability is also required to meet the requirements of safe departure of heavier cargo platforms.
[0004] The existing towing parachute system can meet the stability requirements in the towing mission of a ten-ton cargo platform. However, when the towing mission is increased to a twenty-ton cargo platform and the canopy area is increased, the original parachute shape cannot remain stable in the wake vortex, and the swing amplitude may interfere with the tail of the aircraft, posing a great risk of towing away from the aircraft. Summary of the invention
[0005] The object of the present invention is to provide a towing parachute system suitable for large-tonnage heavy-load airdrop, which is used to meet the requirements of ten-ton to twenty-ton airdrop.
[0006] The technical solution for achieving the purpose of the present invention is: a traction parachute system suitable for large-tonnage heavy-load airdrop, including a traction parachute canopy, a traction parachute pack, and a traction rope; the traction parachute pack encapsulates the traction parachute canopy and part of the traction rope; the traction rope connects the traction parachute canopy and the cargo platform system; the parachute opening rope connects the traction parachute pack and the aircraft hanging point; the traction parachute connector connects the traction parachute canopy and the traction rope.
[0007] Furthermore, the traction canopy adopts a design of a top panel and a surrounding panel, wherein the top panel is circular, and the surrounding panel is divided into eight parts, each part is approximately an isosceles trapezoid, and its lower base is evenly connected to the four sides of the top panel.
[0008] Furthermore, the top width of the flat-laid shape of the traction canopy 3 is a flat circle, with eight separate widths evenly distributed around the circumference; the diameter of the top width is 3m to 5m, with a top hole; each of the eight separate widths is approximately an isosceles trapezoid, with an upper base of approximately 1m to 1.5m, a lower base of approximately 0.8m to 1.2m, a height of approximately 1.5m to 2m, and each width is connected to 7 parachute ropes.
[0009] Compared with the prior art, the present invention has the following significant advantages: (1) the shape structure and size ratio of the traction canopy can meet the traction force requirements of large-tonnage traction off-plane; (2) the form of eight separate circumferences can ensure that the traction canopy maintains a high stability in the turbulent airflow of the aircraft wake. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a composition diagram of the traction parachute system of the present invention.
[0011] Figure 2 It is a schematic structural diagram of the traction canopy of the present invention. DETAILED DESCRIPTION
[0012] The towing parachute system designed in the present invention can realize the function of towing a large-tonnage cargo platform of ten to twenty tons off the aircraft on a large transport aircraft in plain and plateau airdrop scenarios.
[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] Combination Figure 1 In the present invention, the traction parachute system comprises: a traction parachute canopy 3, a traction parachute bag 4, and a traction rope 5.
[0015] The traction parachute bag 2 is used to encapsulate the traction canopy 3 and part of the traction rope 5, so as to realize the hanging and deployment of the system on the tail door of the aircraft, and to open the traction canopy 3 in the airflow outside the aircraft.
[0016] The traction canopy 3 is used to generate aerodynamic force in high-speed airflow. The canopy must be able to generate the traction required for large-tonnage heavy equipment airdrops while ensuring stability in the aircraft wake.
[0017] The traction rope 5 is used to connect the traction canopy 3 and the cargo platform system, and transmit the traction force to the cargo platform.
[0018] Combination Figure 2 The traction canopy 3 adopts a design of top width plus surrounding width, wherein the top width is circular, and the surrounding width is divided into eight parts, each part is approximately an isosceles trapezoid, and its lower base is evenly connected to the four sides of the top width.
[0019] This type of structure can meet the greater traction required for large-tonnage airdrops. Due to the load-reducing and stabilizing effects of its eight separation widths, it can remain stable in the fast and complex flow field of the aircraft wake, ensuring that the size and direction of the traction force remain almost unchanged, allowing large-tonnage cargo platforms to leave the aircraft safely without deviation or collision.
[0020] The diameter of the umbrella top is about 3m to 5m, and there is an umbrella top hole; each of the eight separate surrounding panels is approximately an isosceles trapezoid, with an upper base of about 1m to 1.5m, a lower base of about 0.8m to 1.2m, a height of about 1.5m to 2m, and each surrounding panel is connected to 7 umbrella ropes.
[0021] The actual size sample of this design has been verified through large-tonnage heavy-duty airdrop, and its performance meets the design requirements. It has large-tonnage traction capability and the ability to stably generate traction in the aircraft wake.
Claims
1. A traction parachute system suitable for large-tonnage heavy equipment airdrop, characterized by: The invention comprises a traction parachute canopy (3), a traction parachute bag (2), and a traction rope (5); the traction parachute bag (2) encapsulates the traction parachute canopy (3) and part of the traction rope (5); the traction rope (5) connects the traction parachute canopy (3) and a cargo platform system; the parachute opening rope (1) connects the traction parachute bag (2) and an aircraft hanging point; and the traction parachute connecting piece (4) connects the traction parachute canopy (3) and the traction rope (5).
2. The traction parachute system suitable for large-tonnage heavy-duty airdrop according to claim 1 is characterized in that: The traction canopy (3) adopts a design of a top width plus a surrounding width, wherein the top width is circular and the surrounding width is divided into eight parts, each part is approximately an isosceles trapezoid and is evenly and symmetrically distributed around the top width in a "M" shape.
3. The traction parachute system suitable for large-tonnage heavy-duty airdrop according to claim 2 is characterized in that: The top width of the traction canopy 3 is a flat circle, with eight separate widths evenly distributed around the circumference; the diameter of the top width is 3m to 5m, with a top hole; each of the eight separate widths is approximately an isosceles trapezoid, with an upper base of approximately 1m to 1.5m, a lower base of approximately 0.8m to 1.2m, a height of approximately 1.5m to 2m, and each width is connected to 7 parachute ropes.