Reusable airplane ground auxiliary auxiliary fuel tank and recovery device

Abstract

The utility model relates to the technical field of aircraft overall design, in particular to a reusable aircraft ground auxiliary auxiliary fuel tank and a recycling device, which comprise an auxiliary auxiliary fuel tank body, and an auxiliary fuel tank front supporting point and an auxiliary fuel tank rear supporting point are arranged on the left side and the right side of the auxiliary auxiliary fuel tank body. Recycling devices matched with the front supporting point and the auxiliary fuel tank rear supporting point are arranged on the left side and the right side of the auxiliary auxiliary fuel tank body and comprise ground tackles, front supporting point guide rails are arranged at one ends of the top surfaces of the ground tackles, and rear supporting point buffers are arranged at the other ends of the top surfaces of the ground tackles and arranged in the front supporting point guide rails. The front supporting platform is arranged at the top of the front supporting point buffer, the rear supporting platform is arranged at the top of the rear supporting point buffer, the front supporting point is arranged in the front supporting point guide rail and located above the front supporting platform, the front supporting point guide rail can slide up and down along the front supporting point, and the auxiliary fuel tank rear supporting point is located above the rear supporting platform.

Description

Technical Field

[0001] This utility model relates to the field of aircraft overall design technology, specifically to a reusable aircraft ground auxiliary fuel tank and recovery device. Background Technology

[0002] Modern aircraft consume a significant portion of their total fuel during ground preparation, taxiing, and takeoff roll, resulting in a partially full fuel level after takeoff and impacting their loiter range. While external fuel tanks mounted on hardpoints can increase usable fuel, their weight and size increase drag and weight, severely affecting performance. Ditching them after takeoff leads to excessively high operating costs, making them uneconomical for routine training and other applications. Utility Model Content

[0003] The purpose of this invention is to propose a reusable aircraft ground auxiliary fuel tank and recovery device that provides additional fuel while the aircraft is on the ground, avoiding the consumption of internal fuel. After takeoff, the fuel can be safely recovered and reused, thereby achieving the beneficial effects of balancing range, aircraft maneuverability, and economic efficiency.

[0004] The technical solution of this utility model:

[0005] A reusable aircraft ground auxiliary fuel tank and recovery device includes an auxiliary fuel tank body. A front support point and a rear support point are provided on both the left and right sides of the auxiliary fuel tank body. Recovery devices are provided on both the left and right sides of the auxiliary fuel tank body to cooperate with the front and rear support points. The recovery devices include a ground trolley. A front support point guide rail is provided at one end of the top surface of the ground trolley, and a rear support point buffer is provided at the other end. The front support point buffer is located within the front support point guide rail and connected to the ground trolley. A front support platform is located on top of the front support point buffer, and a rear support platform is located on top of the rear support point buffer. The front support point is located within the front support point guide rail and above the front support platform. The front support point guide rail can slide up and down along the front support point. The rear support point of the auxiliary fuel tank is located above the rear support platform.

[0006] Furthermore, a contact switch is provided on the inner side of the front support point guide rail. When the front support point guide rail moves up and down, it can contact the contact switch. The contact switch is connected to the separation socket through a wire passing through the ground trolley. The separation socket is connected to the aircraft beam through a wire passing through the auxiliary fuel tank body.

[0007] Furthermore, the width of the rear support platform is greater than the width of the front support platform.

[0008] Furthermore, the ground trolley is equipped with a front wheel and a rear wheel.

[0009] Furthermore, the front wheel of the trolley is a steering wheel with a steering pin, and the rear wheel of the trolley is equipped with a brake.

[0010] Furthermore, the rear wheels of the trolley are positioned closer to the ground in the middle of the trolley, close to the center of gravity.

[0011] Beneficial effects of this utility model

[0012] This invention proposes a reusable aircraft ground auxiliary fuel tank and recovery device, which provides additional fuel during aircraft ground preparation, taxiing, and takeoff roll, saving internal fuel, improving aircraft range, and enabling safe fuel tank recovery, thereby improving aircraft maneuverability and operational economy. It achieves a beneficial balance between range, aircraft maneuverability, and operational economy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the reusable aircraft ground auxiliary fuel tank and recovery device of the present invention;

[0014] Figure 2 A schematic diagram illustrating the critical takeoff state of the auxiliary fuel tank;

[0015] Figure 3 A schematic diagram illustrating the normal takeoff and recovery status of the auxiliary fuel tank;

[0016] Figure 4 To assist in the flight mode where the auxiliary fuel tank is not removed from the aircraft;

[0017] exist Figure 1 The components are: 1. Auxiliary fuel tank body; 2. Ground trolley; 3. Front support point guide rail; 4. Front support platform; 5. Front support point buffer; 6. Contact switch; 7. Front support point of auxiliary fuel tank; 8. Separation socket; 9. Rear support point of auxiliary fuel tank; 10. Rear support platform; 11. Rear support point buffer; 12. Aircraft hanging beam; 13. Front wheel of trolley; 14. Rear wheel of trolley.

[0018] Numbers 3, 4, 5, 6, 7, 9, 10, 11, 13, and 14 are symmetrical about the left and right sides of auxiliary fuel tank 1. Only the left side is shown in the figure. Detailed Implementation

[0019] This invention proposes a reusable aircraft ground-based auxiliary fuel tank and recovery device. The auxiliary fuel tank is recovered using a ground trolley, and a buffer is installed on the trolley for cushioning during recovery. The auxiliary fuel tank and the ground trolley are connected by a simple and reliable guide rail-support point mechanism, which realizes functions such as ground trolley driving, relative motion compensation, and safety protection in case the fuel tank fails to detach successfully. A contact switch is installed on the guide rail to enable automatic detachment of the auxiliary fuel tank during takeoff.

[0020] Typical embodiments of the present invention are as follows: Figures 1 to 4 As shown, the auxiliary fuel tank 1 is mounted on the aircraft beam 12 in the same manner as a conventional auxiliary fuel tank. A front support point 7 and a rear support point 9 are respectively located at appropriate positions on the front and rear sides of the auxiliary fuel tank 1. A front support point guide rail 3 is installed on the ground trolley 2 in conjunction with the front support point 7. During aircraft taxiing, takeoff, and other maneuvers, the support point 7 pushes the support point guide rail 3, causing the ground trolley 2 to move synchronously with the aircraft. Simultaneously, the support point 7 and the front support point guide rail 3 can slide relative to each other in the vertical direction, compensating for the relative vertical movement between the auxiliary fuel tank 1 and the ground trolley 2 caused by ground undulations. The support point guide rail 3 contains a front support platform 4 and a front support point buffer 5. When the auxiliary fuel tank 1 separates from the aircraft beam 2 and falls, the front support point 7 contacts the front support platform 4, and the front support point buffer 5 activates, ensuring the safe recovery of the auxiliary fuel tank. Similarly, a rear support platform 10 and a rear support point buffer 11 are provided on the ground trolley 2 in conjunction with the rear support point 9 to cushion the rear support point 9 after the auxiliary fuel tank falls. The rear support platform 10 is designed to have a wider width to compensate for the relative pitch between the auxiliary fuel tank body 1 and the ground trolley 2, ensuring that the auxiliary fuel tank body 1 can be supported by the rear support platform 10 when it falls at different pitch angles.

[0021] A contact switch 6 is also installed at the upper part of the support point guide rail 3. The contact switch 6 is connected to the separation socket 8 via a wire passing through the ground trolley. The separation socket is connected to the aircraft beam 12 via a wire passing through the auxiliary fuel tank housing 1. During takeoff, the current support point 7 moves upward until it contacts the contact switch 6. Figure 2 As shown in the critical takeoff state of the auxiliary fuel tank, contact switch 6 will send an electrical signal, which is connected to the separation socket 8 via a wire passing through the ground trolley. The separation socket transmits the signal to the aircraft beam 2 via a wire passing through the auxiliary fuel tank body 1. Upon receiving the signal, the aircraft automatically jettisons the auxiliary fuel tank body 1, which is then retrieved by the ground trolley 2. Figure 3 As shown.

[0022] If the auxiliary fuel tank housing 1 fails to be successfully jettisoned from the aircraft pylon 12 due to a malfunction or other reasons, as the auxiliary fuel tank housing 1 continues to rise with the aircraft pylon 2, the forward support point 7 will detach from above the forward support point guide rail 3. Subsequently, the separation socket 8 will detach under the tension of the cable, thus separating the ground trolley 2 from the auxiliary fuel tank housing 1, ensuring flight safety. Figure 4 As shown.

[0023] On the ground trolley 2, the front wheel 13 is a steering wheel with a steering pin, which enables steering compensation when the ground trolley 2 turns with the aircraft during ground taxiing. The steering pin is designed to be inward and backward tilted to achieve automatic return-to-center function, ensuring the straight-line stability of the ground trolley 2. The rear wheel 14 of the trolley is equipped with a brake. When the aircraft beam 12 and the auxiliary fuel tank 1 disengage, or the disconnect socket 8 is pulled out, the rear wheel 14 will receive a signal to start braking, causing the ground trolley 2 to decelerate to a stop. The rear wheel 14 is positioned closer to the center of the ground trolley 2 and closer to the center of gravity to improve the agility of the ground trolley 2 when turning on the ground and to improve braking efficiency.

Claims

1. A reusable aircraft ground auxiliary fuel tank and recovery device, characterized in that, The system includes an auxiliary fuel tank body, with a front support point and a rear support point on both the left and right sides of the auxiliary fuel tank body. Recovery devices are also provided on both the left and right sides of the auxiliary fuel tank body, cooperating with the front and rear support points. Each recovery device includes a ground trolley. A front support point guide rail is located at one end of the top surface of the ground trolley, and a rear support point buffer is located at the other end. The front support point buffer is located within the front support point guide rail and connected to the ground trolley. A front support platform is located on top of the front support point buffer, and a rear support platform is located on top of the rear support point buffer. The front support point is located within the front support point guide rail and above the front support platform. The front support point guide rail can slide up and down along the front support point. The rear support point of the auxiliary fuel tank is located above the rear support platform.

2. The reusable aircraft ground auxiliary fuel tank and recovery device according to claim 1, characterized in that, A contact switch is provided on the inner side of the front support point guide rail. When the front support point guide rail moves up and down, it can contact the contact switch. The contact switch is connected to the separation socket through a wire passing through the ground trolley. The separation socket is connected to the aircraft beam through a wire passing through the auxiliary fuel tank body.

3. The reusable aircraft ground auxiliary fuel tank and recovery device according to claim 1, characterized in that, The width of the rear support platform is greater than the width of the front support platform.

4. The reusable aircraft ground auxiliary fuel tank and recovery device according to claim 1, characterized in that, The ground trolley is equipped with a front wheel and a rear wheel.

5. The reusable aircraft ground auxiliary fuel tank and recovery device according to claim 4, characterized in that, The front wheels of the trolley are steering wheels with steering pins, and the rear wheels of the trolley are equipped with brakes.

6. The reusable aircraft ground auxiliary fuel tank and recovery device according to claim 5, characterized in that, The rear wheels of the pulley are positioned closer to the ground in the middle of the pulley, near the center of gravity.

Images