Stopping front part device
By designing a stop flap device and utilizing the coordinated structure of the tail rib and the partition, the problem of the front flap flipping at an excessively large angle when retracted is solved, a reliable limiting effect is achieved, and flipping failures during flight are avoided.
Patent Information
- Application Number
- CN202423046723.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-10
AI Technical Summary
When the front flaps of existing aircraft are retracted, they are easily flipped over at an excessive angle due to airflow or other external factors, causing malfunctions.
A stop flap device is designed, which limits the angle of the flap by cooperating with the stop block on the tail rib and the groove of the partition. The tail rib and partition are made of high-strength aluminum alloy material, fixed to the body structure with rivets, and used in conjunction with the hinge shaft.
It effectively avoids the front flap from reversing due to excessive angle when folded, improves the limit reliability, and prevents flipping failures during flight.
Smart Images
Figure CN223479315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aircraft structural design technology, and in particular to a stop flap device. Background Technology
[0002] Modern aircraft employ lift-enhancing flaps on the leading edge of the wing to increase lift, improve maneuverability, reduce stall speed at high angles of attack, provide lift during low-speed flight, and enhance takeoff and landing performance. The leading flap is a component of the flap system; its function is to rotate the wing's leading-edge flap downwards around the hinge axis by a certain angle, thereby altering the wing camber to increase the usable angle of attack during low-speed flight and thus changing the lift.
[0003] Currently, the leading edge flaps are typically retracted and extended by deflecting downwards at a certain angle using a control mechanism. During flight training, excessive airflow or other reasons may cause the leading edge flap to retract at an excessive angle, resulting in a rollover and subsequent malfunction. Utility Model Content
[0004] The purpose of this invention is to provide a stop-motion front flap device. This invention can prevent the front flap from reversing due to an excessively large angle when it is pulled up.
[0005] The technical solution of this utility model is: a front flap stopping device, including a front flap and a front edge fixing section. After the front flap and the front edge fixing section are assembled, they are installed and fixed on the body structure with ear plates. A tail rib is provided on the mating end face of the front flap and the front edge fixing section, and a stop block is provided on the tail rib. A partition is provided on the mating end face of the front edge fixing section and the front flap, and a groove is provided on the partition. The front flap is deflected downward through a set of hinge rotation shafts. When the front flap is retracted, the front flap deflects upward. When it deflects upward to the reset position, the stop block is stuck in the groove.
[0006] In the aforementioned stop front flap device, the tail rib and the stop block are integrally machined parts.
[0007] In the aforementioned stop front flap device, the tail rib is a high-strength aluminum alloy machined part.
[0008] In the aforementioned stop front flap device, the partition is a high-strength aluminum alloy machined part.
[0009] In the aforementioned stop front flap device, the tail rib and the front flap are assembled and fixed together by rivets and then fixed to the hinge shaft of the body structure.
[0010] In the aforementioned stop front flap device, the rear part of the partition is provided with a limiting angle box for limiting the rear part of the tail rib.
[0011] The advantages of this utility model are: This utility model provides a stop front flap device that works in conjunction with the groove of the partition plate on the front edge fixed section. The front flap is limited by the brake block of the tail rib working in conjunction with the groove of the partition plate, which effectively prevents the front flap from reversing due to excessive angle when it is folded up.
[0012] This utility model provides a stop flap device that can be used on drooping leading-edge flaps. Depending on mission requirements, after the flap is lowered and deflected at a certain angle, an auxiliary control mechanism retracts the flap when it needs to be retracted, preventing it from flipping over due to excessive flap deflection angle caused by airflow or other external factors during flight.
[0013] This utility model has a limiting angle box at the rear of the partition to limit the rear of the tail rib; after the front flap is retracted and reset, this structure can improve the reliability of the limiting and further avoid flipping due to excessive front flap retraction angle caused by airflow or other external factors during flight. Attached Figure Description
[0014] Figure 1 This is a diagram showing the front of the jacket tilting downwards;
[0015] Figure 2 This is a diagram illustrating the front panel tilting upwards, folding back into place, and resetting.
[0016] Figure 3 This is a schematic diagram of the tail rib and partition. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0018] Example 1. A stop flap device, see [link to example]. Figure 1-Figure 3 The device includes a front flap 1 and a front edge fixing section 2. After the front flap 1 and the front edge fixing section 2 are assembled, they are installed and fixed on the body structure with ear plates. A tail rib 3 is provided on the mating end face of the front flap 1 and the front edge fixing section 2, and a stop block 5 is provided on the tail rib 3. A partition 4 is provided on the mating end face of the front edge fixing section 2 and the front flap 1, and a groove 6 is provided on the partition 4. The front flap 1 is deflected downward through a set of hinge rotation shafts. When the front flap 1 is retracted, the front flap 1 is deflected upward. When it is deflected upward to the reset position, the stop block 5 is stuck in the groove 6 to limit the front flap.
[0019] The partition 4 has a limiting angle box 7 at its rear for limiting the rear of the tail rib 3. The stop-locking front flap device works in conjunction with the groove of the partition in the front edge fixing section. Both the tail rib with the stop block and the partition with the groove are made of high-strength aluminum alloy machined parts. The stop block and tail rib are integrally formed. The front flap with the stop block is assembled with rivets and fixed to the hinge shaft of the machine body structure. This utility model consists of a front flap 1 and a front edge fixing section 2. The tail rib 3 with the stop block 5 on the front flap 1 works in conjunction with the partition 4 with the groove 6.
Claims
1. A stop flap device, characterized in that, The front flap (1) and the front edge fixing section (2) are assembled and then fixed on the body structure with ear plates. The front flap (1) and the front edge fixing section (2) are provided with tail ribs (3) on the mating end face of the front flap (1) and the front edge fixing section (2), and the tail ribs (3) are provided with stop blocks (5). The front edge fixing section (2) and the front flap (1) are provided with partitions (4), and the partitions (4) are provided with grooves (6). The front flap (1) is deflected downward through a set of hinge rotation shafts. When the front flap (1) is retracted, the front flap (1) is deflected upward. When it is deflected upward to the reset position, the stop blocks (5) are stuck in the grooves (6).
2. The stop flap device according to claim 1, characterized in that, The tail rib (3) and the stop block (5) are integrally machined parts.
3. The stop flap device according to claim 1, characterized in that, The tail rib (3) is a high-strength aluminum alloy machined part.
4. The stop flap device according to claim 1, characterized in that, The partition (4) is a high-strength aluminum alloy machined part.
5. The stop flap device according to claim 1, characterized in that, After the tail rib (3) and the front flap (1) are assembled and fixed together by rivets, they are fixed on the hinge shaft of the body structure.
6. The stop flap device according to claim 1, characterized in that, The partition (4) is provided with a limiting angle box (7) at the rear, which is used to limit the rear of the tail rib (3).