CN117698986A

CN117698986A - Buried trailing edge flap movement mechanism

Info

Publication number: CN117698986A
Application number: CN202311838960.0A
Authority: CN
Inventors: ***; 付硕; 朱小军
Original assignee: AVIC First Aircraft Institute
Current assignee: AVIC First Aircraft Institute
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-03-15

Abstract

The application belongs to aircraft structural strength field, in particular to an embedded trailing edge flap motion mechanism, includes: a trailing edge flap, a fixed trailing edge trailing beam, a fixed trailing edge lower airfoil, a fixed trailing edge upper airfoil, and a drive arrangement; the upper end of the fixed trailing edge trailing beam is connected with the fixed trailing edge upper airfoil surface, the lower end of the fixed trailing edge trailing beam is connected with the fixed trailing edge lower airfoil surface, the fixed trailing edge upper airfoil surface is connected with the fixed trailing edge lower airfoil surface at the tail end, the trailing edge flap is movably lapped at the section of the fixed trailing edge lower airfoil surface, and the trailing edge trailing beam, the fixed trailing edge upper airfoil surface, the fixed trailing edge lower airfoil surface and the trailing edge flap form an assembly cavity; the driving device is arranged in the assembly cavity, the driving device drives the trailing edge flap to move, the sliding rail-pulley frame-connecting rod movement mechanism is adopted to replace the traditional actuator cylinder for driving, the structural bearing capacity is strong, the movement mechanism is safe and reliable, the deflection angle of the trailing edge flap is large, and multiple groups can be arranged along the spreading direction as required.

Description

Buried trailing edge flap movement mechanism

Technical Field

The application belongs to the field of aircraft structural strength, and particularly relates to an embedded trailing edge flap movement mechanism.

Background

The trailing edge flap plays an important role in the process of taking off and landing of the aircraft, and with the rapid development of aviation technology, the aerodynamic performance requirements of the aircraft are higher and higher, and in order to pursue higher flight speeds, the aircraft trailing edge flap movement mechanism is often arranged in the aircraft, so that the arrangement of a fairing is avoided, and the resistance of the aircraft is increased.

The flap drive embedded in the fixed trailing edge of the aircraft is usually set to be driven directly by an actuator cylinder, and the limitation of a drive arm brings high requirements on the size, the drive force and the arrangement form of the actuator cylinder, so that the movement range of the trailing edge flap is limited, the reliability of the actuator cylinder is poor, and the faults are many.

Disclosure of Invention

To solve the above-described problems, the present application provides a buried trailing edge flap movement mechanism, including:

a trailing edge flap, a fixed trailing edge trailing beam, a fixed trailing edge lower airfoil, a fixed trailing edge upper airfoil, and a drive arrangement;

the upper end of the fixed trailing edge rear beam is connected with a fixed trailing edge upper airfoil surface, the lower end of the fixed trailing edge rear beam is connected with a fixed trailing edge lower airfoil surface, the fixed trailing edge lower airfoil surface is provided with a frame opening, the front end of the trailing edge flap is hinged with the front edge of the frame opening, and the rear end is overlapped with the rear edge of the frame opening;

the trailing edge trailing beam, the fixed trailing edge upper airfoil surface, the fixed trailing edge lower airfoil surface and the trailing edge flap form an assembly cavity; a drive device is disposed in the assembly chamber, the drive device driving the trailing edge flap in motion.

Preferably, the driving device includes: the device comprises a sliding rail, a pulley yoke, a driving screw rod, a connecting rod and a control surface connector; the driving screw rod is connected with the fixed trailing edge trailing beam, the sliding rail is fixed on the fixed trailing edge trailing beam, the pulley yoke is arranged on the sliding rail, the pulley yoke is hinged with the trailing edge flap through the connecting rod and the control surface joint, and the driving screw rod drives the pulley yoke to move along the sliding rail and drive the trailing edge flap to move.

Preferably, the driving screw is arranged on the fixed trailing edge rear beam through a spherical hinge, and the driving screw can swing up and down when the pulley frame moves on the sliding rail.

Preferably, the drive screw has an external screw and a drive device for driving the external screw, and the external screw is screwed to the operating joint of the pulley frame.

Preferably, the trailing edge flap and the fixed trailing edge lower airfoil are overlapped by the rubber profile.

Preferably, the sliding rail is an arc-shaped sliding rail, and the section is I-shaped.

Preferably, the steering joint is rotatably connected with the pulley frame, and the rotating shaft is perpendicular to the axis of the driving screw.

Preferably, the driving means comprises a plurality distributed in the spanwise direction.

Preferably, the drive device further comprises an auxiliary drive device without a drive screw for maintaining the movement path of the trailing edge flap

The sliding rail-pulley frame-connecting rod movement mechanism is adopted to replace the traditional actuator cylinder for driving, the structural bearing capacity is strong, the movement mechanism is safe and reliable, the deflection angle of the trailing edge flap is large, and multiple groups can be arranged along the expanding direction according to the requirement.

Drawings

FIG. 1 is a schematic illustration of an aircraft leading edge seal configuration according to one embodiment of the invention;

FIG. 2 is a schematic view of the post-deflection configuration of a trailing edge flap in accordance with an embodiment of the invention.

Wherein: the device comprises a trailing edge flap-1, a sliding rail-2, a pulley frame-3, a driving screw-4, a connecting rod-5, a control surface joint-6, a fixed trailing edge trailing beam-7, a fixed trailing edge lower airfoil-8, a fixed trailing edge upper airfoil-9 and a rubber profile-10.

Detailed Description

In order to make the technical solution of the present application and the advantages thereof more apparent, the technical solution of the present application will be more fully described in detail below with reference to the accompanying drawings, it being understood that the specific embodiments described herein are only some of the embodiments of the present application, which are for explanation of the present application, not for limitation of the present application. It should be noted that, for convenience of description, only the portion relevant to the present application is shown in the drawings, and other relevant portions may refer to a general design, and without conflict, the embodiments and technical features in the embodiments may be combined with each other to obtain new embodiments.

FIG. 1 is a buried trailing edge flap motion mechanism according to an embodiment of the present invention.

As shown in fig. 1, a buried trailing edge flap motion mechanism includes: trailing edge flap 1, slide rail 2, pulley yoke 3, drive lead screw 4, connecting rod 5, rudder face joint 6, fixed trailing edge trailing beam 7, fixed trailing edge lower airfoil 8, fixed trailing edge upper airfoil 9 and rubber section bar 10, wherein:

the lower airfoil surface of the trailing edge flap 1 is in smooth transition with the lower airfoil surface 8 of the fixed trailing edge; the upper airfoil surface of the trailing edge flap 1 is arranged in a cavity formed by the fixed trailing edge upper airfoil surface 9, the fixed trailing edge lower airfoil surface 8 and the fixed trailing edge trailing beam 7; the sliding rail 2 is an arc-shaped sliding rail, the section of which is I-shaped, and is fixed on a rear beam 7 of the fixed rear edge of the aircraft; the pulley yoke 3 is provided with a roller capable of moving on the slide rail 2, and the pulley yoke 3 is provided with an operating joint and a connecting rod joint which are respectively connected with the driving screw 4 and the connecting rod 5. The driving screw rod 4 is fixed on a rear beam 7 of the fixed rear edge of the airplane and is used for driving the pulley yoke 3 to move on the sliding rail 2; one end of a connecting rod 5 is connected with the pulley yoke 3 through a connecting rod connector, and the other end of the connecting rod is connected with the trailing edge flap 1 through a control surface connector 6, and the two connecting modes are hinged; the rear edge of the trailing edge flap 1 is attached to the fixed trailing edge lower airfoil surface 8 through a rubber profile 10; the driving screw 4 and the fixed trailing edge trailing beam 7 of the airplane are connected in a ball angle, the driving screw 4 can swing up and down when the pulley frame 3 moves on the sliding rail 2, the operating joint is rotatably connected with the pulley frame, the rotating shaft is perpendicular to the axis of the driving screw, and the operating joint is prevented from being clamped with the driving screw.

As shown in fig. 2, when the trailing edge flap 1 deflects, the driving screw 4 drives the pulley frame 3 to deflect along the sliding rail 2, and meanwhile, the pulley frame 3 drives the connecting rod 5 to rotate around the control surface joint 6 so as to drive the trailing edge flap 1 to deflect; the front end of the trailing edge flap 1 is extruded with the rubber profile 10, and the tail end of the trailing edge flap 1 is separated from the fixed trailing edge lower airfoil surface 8.

When the trailing edge flap 1 returns from the deflected position to the initial position, the opposite is said.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A buried trailing edge flap motion mechanism comprising:

the device comprises a trailing edge flap (1), a fixed trailing edge trailing beam (7), a fixed trailing edge lower airfoil surface (8), a fixed trailing edge upper airfoil surface (9) and a driving device;

the upper end of the fixed trailing edge trailing beam (7) is connected with a fixed trailing edge upper airfoil surface (9), the lower end of the fixed trailing edge trailing beam is connected with a fixed trailing edge lower airfoil surface (8), the fixed trailing edge upper airfoil surface (9) is connected with the fixed trailing edge lower airfoil surface (8) at the tail end, the fixed trailing edge lower airfoil surface (8) is provided with a frame opening, the front end of the trailing edge flap (1) is hinged with the front edge of the frame opening, and the rear end is overlapped with the rear edge of the frame opening;

the trailing edge trailing beam (7), the fixed trailing edge upper airfoil surface (9), the fixed trailing edge lower airfoil surface (8) and the trailing edge flap (1) form an assembly cavity; a drive device is arranged in the assembly chamber, and the drive device drives the trailing edge flap (1) to move.

2. The embedded trailing edge flap motion mechanism of claim 1 wherein the drive means comprises: the device comprises a sliding rail (2), a pulley frame (3), a driving screw (4), a connecting rod (5) and a control surface joint (6); the driving screw rod (4) is connected with the fixed trailing edge rear beam (7), the sliding rail (2) is fixed on the fixed trailing edge rear beam (7), the pulley frame (3) is installed on the sliding rail (2), the pulley frame (3) is hinged with the trailing edge flap (1) through the connecting rod (5) and the control surface joint (6), and the driving screw rod (4) drives the pulley frame (3) to move along the sliding rail (2) and drive the trailing edge flap (1) to move.

3. The embedded trailing edge flap motion mechanism according to claim 2, wherein the driving screw (4) is mounted on the fixed trailing edge trailing beam (7) through a spherical hinge, and the driving screw (4) can swing up and down when the pulley frame (3) moves on the sliding rail (2).

4. The embedded trailing edge flap motion mechanism according to claim 2, characterized in that the drive screw (4) has an externally threaded screw and a drive device for driving the externally threaded screw, the externally threaded screw being screwed with a control joint provided on the pulley frame (3).

5. The embedded trailing edge flap kinematic mechanism according to claim 2, characterized in that the trailing edge flap (1) and the fixed trailing edge lower airfoil surface (8) are in abutting overlap by means of a rubber profile (10).

6. The embedded trailing edge flap motion mechanism according to claim 2, wherein the sliding rail (2) is an arc-shaped sliding rail, and the section is an i-shape.

7. The embedded trailing edge flap kinematic mechanism according to claim 4, characterized in that the actuating joint is rotatably connected to the pulley yoke (3) with the axis of rotation being perpendicular to the axis of the drive screw (4).

8. The embedded trailing edge flap motion mechanism of claim 2 wherein the drive means comprises a plurality of spanwise distributed drive units.

9. The embedded trailing edge flap movement mechanism as claimed in claim 8, characterized in that the drive device further comprises an auxiliary drive without a drive screw (4) for maintaining the movement track of the trailing edge flap (1).