Repacking aerial delivery ejection inversion control method and system
By using a delayed connection mechanism and a sliding sling system in the heavy-duty airdrop system, the problem of large-angle rollover of airdrop vehicles was solved, and a safe and stable airdrop process was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AEROSPACE LIFE SUPPORT IND LTD
- Filing Date
- 2023-11-24
- Publication Date
- 2026-07-07
AI Technical Summary
During heavy equipment airdrops, airdrop vehicles are prone to tipping over at large angles as they exit the aircraft, leading to safety issues such as collisions between the vehicle and the aircraft cabin walls, system snags, and fuel leaks.
The traditional connection and sling system is replaced by a time-delayed connection mechanism and a sliding sling system. The time-delayed connection mechanism is triggered the moment the airdrop vehicle leaves the aircraft, and the sliding sling system adjusts the sling position and controls the flip angle during the straightening of the main parachute subsystem.
Effectively control the roll angle of the airdrop vehicle to avoid collisions with the aircraft cabin walls, prevent system snags and fuel tank leaks, and ensure a stable landing.
Smart Images
Figure CN117401165B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of heavy equipment airdrop, specifically relating to a method and system for controlling the flipping of heavy equipment airdrop aircraft. Background Technology
[0002] Currently, during the process of towing heavy equipment out of the aircraft, due to the rearward center of gravity of the airdrop vehicle (3) and the immediate lifting of the parachute after towing out, the airdrop vehicle (3) often experiences large-angle overturning during the outgoing process. The large-angle overturning of the airdrop vehicle (3) during the outgoing process may cause a safety accident where the rear of the vehicle collides with the bulkhead of the aircraft (11). Moreover, after leaving the aircraft, because the straightening direction of the system is opposite to the direction of movement of the airdrop vehicle (3), the front and rear straps are subjected to inconsistent forces, which will also aggravate the overturning of the airdrop vehicle (3). It may also cause the airdrop system to hook with the airdrop vehicle (3) and cause adverse effects such as fuel tank leakage.
[0003] like Figure 1 The diagram shows the installation of the heavy-duty airdrop vehicle (3) inside the aircraft. The airdrop vehicle (3) is placed on the roller (1), and a boom roller (2) is located near the hatch. The airdrop vehicle (3) is equipped with a main parachute subsystem (5), a sling subsystem (6), and a steering device (7). Figure 2 The diagram shows the installation of the steering device (7). The steering device (7) includes a connecting mechanism (8), a sling (10), and a release cable (9). The connecting mechanism (8) is temporarily installed at the front bottom of the airdrop vehicle (3) and is connected to the towing parachute system (4) and the main parachute system (5) respectively. The sling (10) is installed at the rear bottom of the airdrop vehicle (3) and protrudes from the bottom of the airdrop vehicle (3). The connecting mechanism (8) and the sling (10) are connected by the release cable (9). Figure 3 As shown, this is a schematic diagram of the aircraft towing process. After the aircraft (11) flies to the designated airdrop area, the towing parachute subsystem (4) tows the airdrop vehicle (3) along the roller (1) out of the cabin via the connecting mechanism (8); Figure 4 As shown, this is a schematic diagram of a traditional traction-induced rollover. At the moment of takeoff, the boom (10) collides with the boom roller (2), releasing the constraint between the connecting mechanism (8) and the airdrop vehicle (3) via the release cable (9). The traction parachute system (4) then turns to lift the connecting mechanism (8) and the main parachute system (5). Since the main parachute system (5) is located at the rear of the airdrop vehicle (3), lifting the main parachute system (5) will exacerbate the rollover of the airdrop vehicle (3). Figure 5As shown, this is a schematic diagram of the traditional system straightening operation. The traction parachute subsystem (4) straightens the main parachute subsystem (5), and the main parachute subsystem (5) straightens the sling subsystem (6). The sling subsystem (6) includes a connecting component (12), a front sling (13), and a rear sling (14). One side of the connecting component (12) is connected to the main parachute subsystem (5), and the other side of the connecting component (12) is connected to the front and rear of the airdrop vehicle (3) through the front sling (13) and the rear sling (14), respectively. Since the straightening direction of the system is opposite to the movement direction of the airdrop vehicle (3), the rear sling (14) is stressed first, which will also exacerbate the overturning of the airdrop vehicle (3). Summary of the Invention
[0004] The purpose of this invention is to provide a method and system for controlling the overturning of a heavy-duty airdrop vehicle. This invention can prevent the airdrop vehicle (3) from overturning at a large angle and colliding with the bulkhead of the aircraft (11), prevent the system from hooking with the airdrop vehicle (3), and prevent the airdrop vehicle (3) from overturning at a large angle and causing oil leakage from the fuel tank.
[0005] The technical solution adopted in this invention is:
[0006] A method for controlling the retraction of a heavy-duty airdrop vehicle is proposed. The connecting mechanism (8) of the steering device (7) is replaced with a delayed connecting mechanism (15) that includes a delay function. At the moment the airdrop vehicle (3) leaves the aircraft, the boom (10) collides with the boom roller (2), triggering the delayed connecting mechanism (15) via the release cable (9). The delayed connecting mechanism (15) releases its constraint on the airdrop vehicle (3) after a certain delay, ensuring that the airdrop vehicle (3) leaves the aircraft (11) cabin in a near-horizontal posture. Afterwards, the traction parachute subsystem (4) turns and lifts the connecting mechanism (8) and the main parachute subsystem (5). The sling subsystem (6) is replaced with an adjustable sliding sling subsystem. The system (16) includes a sliding sling subsystem (16) comprising a pulley assembly (17) and a sling (18). The pulley assembly (17) is connected to the main parachute subsystem (5). The sling (18) is wrapped around the pulley assembly (17) without detaching and its two ends are connected downwards to the front and rear of the airdrop vehicle (3) respectively. During the straightening process of the main parachute subsystem (5), the pulley assembly (17) gradually slides from the front of the sling (18) to the middle, suppressing the airdrop vehicle (3) from tilting downwards and controlling the tilting angle of the airdrop vehicle (3) within a small range. After the airdrop vehicle (3) is stabilized, the pulley assembly (17) is in the middle of the sling (18), and the airdrop vehicle (3) lands stably in a horizontal attitude.
[0007] A heavy-duty airdrop system includes a main parachute subsystem (5), a sliding sling subsystem (16), and a steering device (7) mounted on an airdrop vehicle (3). The steering device (7) includes a time-delay connection mechanism (15), a boom (10), and a release cable (9). The time-delay connection mechanism (15) is temporarily mounted on the front bottom of the airdrop vehicle (3) and connected to the towing parachute subsystem (4) and the main parachute system (5) respectively. The boom (10) is mounted on the rear bottom of the airdrop vehicle (3) and protrudes from the bottom of the airdrop vehicle (3). The time-delay connection mechanism (15) The battering pole (10) is connected by a release cable (9). After the battering pole (10) collides with the battering pole roller (2), the release cable (9) triggers the delay connection mechanism (15). The delay connection mechanism (15) releases the constraint with the airdrop vehicle (3) after a certain delay. The sliding sling subsystem (16) includes a pulley assembly (17) and a sling (18). The pulley assembly (17) is connected to the main parachute subsystem (5). The sling (18) is wrapped around the pulley assembly (17) without coming off and is connected to the front and rear of the airdrop vehicle (3) at both ends downwards.
[0008] The beneficial effects of this invention are:
[0009] This invention ensures that the airdrop vehicle (3) leaves the aircraft (11) cabin in a near-horizontal posture, thereby avoiding the airdrop vehicle (3) from overturning at a large angle and colliding with the aircraft (11) cabin wall; this invention can control the overturning angle of the airdrop vehicle (3) within a small range during the straightening process of the main parachute system (5), thereby avoiding the system from hooking with the airdrop vehicle (3) and avoiding the airdrop vehicle (3) from overturning at a large angle and causing fuel tank leakage. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the installation inside the heavy-duty airdrop machine.
[0011] Figure 2 This is a schematic diagram of the steering mechanism.
[0012] Figure 3 This is a schematic diagram of the traditional traction machine process.
[0013] Figure 4 This is a schematic diagram of a traditional traction off-machine flip.
[0014] Figure 5 This is a schematic diagram of the traditional system straightening process.
[0015] Figure 6 This is a schematic diagram of the traction machine process in an embodiment of the present invention.
[0016] Figure 7 This is a schematic diagram of the system straightening operation in an embodiment of the present invention.
[0017] Figure 8This is a schematic diagram of the system stabilization operation in an embodiment of the present invention.
[0018] In the diagram: 1-Roller; 2-Strike rod roller; 3-Airdrop vehicle; 4-Towing parachute system; 5-Main parachute system; 6-Sling subsystem; 7-Steering device; 8-Connecting mechanism; 9-Release cable; 10-Strike rod; 11-Aircraft; 12-Connecting assembly; 13-Front sling; 14-Rear sling; 15-Delayed connection mechanism; 16-Sliding sling subsystem; 17-Pulley assembly; 18-Sling. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] This embodiment discloses a method for controlling the tilting of a heavy-duty airdrop aircraft, which makes two improvements compared to the traditional method:
[0021] like Figure 6 As shown, the connecting mechanism 8 of the steering device 7 is replaced with a delayed connecting mechanism 15 with a delay function. When the airdrop vehicle 3 leaves the aircraft, the stick 10 collides with the stick roller 2, triggering the delayed connecting mechanism 15 through the release cable 9. The delayed connecting mechanism 15 releases its constraint with the airdrop vehicle 3 after a certain delay, ensuring that the airdrop vehicle 3 leaves the aircraft 11 cabin in a near-horizontal attitude. Then, the traction parachute system 4 turns and lifts the connecting mechanism 8 and the main parachute system 5, thereby avoiding the airdrop vehicle 3 from overturning at a large angle and colliding with the cabin wall of the aircraft 11.
[0022] like Figure 7 and Figure 8 As shown, the sling subsystem 6 is replaced with an adjustable sliding sling subsystem 16. The sliding sling subsystem 16 includes a pulley assembly 17 and a sling 18. The pulley assembly 17 is connected to the main parachute subsystem 5. The sling 18 is wrapped around the pulley assembly 17 without detaching, and its two ends are connected downwards to the front and rear of the airdrop vehicle 3, respectively. During the straightening process of the main parachute system 5, the pulley assembly 17 gradually slides from the front of the sling 18 to the middle, suppressing the downward swing of the airdrop vehicle 3 and controlling the tilting angle of the airdrop vehicle 3 within a small range. This avoids the system from hooking with the airdrop vehicle 3 and avoids the airdrop vehicle 3 from tilting at a large angle, which would cause fuel tank leakage. After the airdrop vehicle 3 is stabilized, the pulley assembly 17 is in the middle of the sling 18, and the airdrop vehicle 3 lands stably in a horizontal attitude.
[0023] This invention also discloses a heavy-duty airdrop system:
[0024] like Figures 6 to 8As shown, the system includes a main parachute subsystem 5, a sliding sling subsystem 16, and a steering device 7, all installed on the airdrop vehicle 3. The steering device 7 includes a time-delay connection mechanism 15, a boom 10, and a release cable 9. The time-delay connection mechanism 15 is temporarily installed at the front bottom of the airdrop vehicle 3 and is connected to the towing parachute system 4 and the main parachute system 5, respectively. The boom 10 is installed at the rear bottom of the airdrop vehicle 3 and protrudes from the bottom of the airdrop vehicle 3. The time-delay connection mechanism 15 and the boom 10 are connected by the release cable 9. After the boom 10 collides with the boom roller 2, the time-delay connection mechanism 15 is triggered by the release cable 9. The time-delay connection mechanism 15 is released from its constraint with the airdrop vehicle 3 after a certain delay. The sliding sling subsystem 16 includes a pulley assembly 17 and a sling 18. The pulley assembly 17 is connected to the main parachute system 5. The sling 18 is wrapped around the pulley assembly 17 without detaching and its two ends are connected downwards to the front and rear parts of the airdrop vehicle 3, respectively.
[0025] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
Claims
1. A method for controlling the tilting of a heavy-duty airdrop aircraft, characterized in that: Replace the connecting mechanism (8) of the steering device (7) with a delayed connecting mechanism (15) that adds a delay function. At the moment the airdrop vehicle (3) leaves the aircraft, the stick (10) collides with the stick roller (2), triggering the delayed connecting mechanism (15) through the release cable (9). The delayed connecting mechanism (15) releases its constraint with the airdrop vehicle (3) after a certain delay, ensuring that the airdrop vehicle (3) leaves the aircraft (11) cabin in a near-horizontal attitude. Then, the traction parachute subsystem (4) turns and lifts the connecting mechanism (8) and the main parachute subsystem (5). Replace the sling subsystem (6) with an adjustable sliding sling subsystem (16). The moving sling subsystem (16) includes a pulley assembly (17) and a sling (18). The pulley assembly (17) is connected to the main parachute subsystem (5). The sling (18) is wrapped around the pulley assembly (17) without coming off and is connected to the front and rear of the airdrop vehicle (3) with both ends pointing downwards. During the straightening process of the main parachute subsystem (5), the pulley assembly (17) gradually slides from the front of the sling (18) to the middle, suppressing the airdrop vehicle (3) from tilting down and controlling the tilting angle of the airdrop vehicle (3) within a small range. After the airdrop vehicle (3) is stabilized, the pulley assembly (17) is in the middle of the sling (18), and the airdrop vehicle (3) lands stably in a horizontal attitude.
2. A heavy equipment airdrop system, characterized in that: This includes a main parachute subsystem (5), a sliding sling subsystem (16), and a steering device (7) installed on the airdrop vehicle (3); the steering device (7) includes a delayed connection mechanism (15), a boom (10), and a release cable (9). The delayed connection mechanism (15) is temporarily installed at the front bottom of the airdrop vehicle (3) and connected to the towing parachute subsystem (4) and the main parachute subsystem (5) respectively. The boom (10) is installed at the rear bottom of the airdrop vehicle (3) and protrudes from the bottom of the airdrop vehicle (3). The delayed connection mechanism (15) and the boom (10) are connected to the main parachute subsystem (4) and the main parachute subsystem (5) respectively. 0) After the lashing pole (10) collides with the lashing pole roller (2) via the release cable (9), the delay connection mechanism (15) is triggered by the release cable (9). The delay connection mechanism (15) releases the constraint with the airdrop vehicle (3) after a certain delay. The sliding sling subsystem (16) includes a pulley assembly (17) and a sling (18). The pulley assembly (17) is connected to the main umbrella subsystem (5). The sling (18) is wrapped around the pulley assembly (17) without coming off and is connected to the front and rear of the airdrop vehicle (3) at both ends downwards.