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A winglet device

A technology of wing tips and ratchet sleeves, which is applied in the directions of wings, wing adjustment, transportation and packaging, can solve the problems of less adjustable angle of the device, affecting flight safety, easy disconnection and falling off, etc., and achieves many adjustable angles. Small footprint and low air resistance

Active Publication Date: 2017-12-19
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this device has few adjustable angles and takes up a lot of space. The metal buckle chain will move in the air, and it is easy to disconnect and fall off, which affects flight safety.

Method used

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Examples

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Effect test

example 1

[0039] Example 1, adjust the inclination to make the winglet achieve the optimal aerodynamic effect

[0040] The winglet device of the present invention can adjust the inclination angle of the winglet, and through flight tests at different inclination angles, analyze the test data results, determine the optimal inclination angle of the winglet, and obtain the optimal aerodynamic effect .

example 2

[0041] Example 2, rapid replacement of damaged winglets during emergency missions

[0042] The winglet device of the present invention adopts a modular detachable design. If the winglet is damaged during the emergency mission of the aircraft, it does not need to be repaired like the current winglet, but can be disassembled immediately for replacement, saving a lot of valuable maintenance time. At the same time, the damaged winglet can be brought back to the maintenance area for maintenance after the mission is completed, without having to be discarded, which saves a lot of cost.

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PUM

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Abstract

The invention discloses a winglet device which comprises a wingtip connecting part (1), ratchet wheel sleeves (2), ratchet wheel rods (3) and pressing bolts (4), wherein the wingtip connecting part (1) is connected to a wingtip of a wing; one side of the wingtip connecting part (1) is provided with two or more U-shaped grooves; two inner end surfaces of each U-shaped groove are respectively provided with a ratchet wheel groove in the shape of a non-revolving body and a threaded hole; the ratchet wheel sleeve (2) is arranged in the ratchet wheel groove, the shape of each ratchet wheel sleeve is consistent with that of the corresponding ratchet wheel groove, and a ratchet-wheel-shaped through hole is formed in each ratchet wheel sleeve; each ratchet wheel rod (3) comprises a ratchet wheel part and a connecting part, wherein the connecting part is connected to the winglet, the periphery of the ratchet wheel part is consistent with the through hole in shape, and the ratchet wheel part is arranged in the through hole of the ratchet wheel sleeve (2) in a sleeved mode; a threaded end of each pressing bolt (4) is screwed in the corresponding threaded hole, and the other end of each pressing bolt (4) axially presses one end surface of the corresponding ratchet wheel rod (3) connecting part to limit axial movement of the corresponding ratchet wheel rod (3). According to the winglet device, the ratchet wheel structure is relatively small in space occupancy, lighter in weight and highly adjustable in angle.

Description

technical field [0001] The invention relates to a winglet device, which belongs to the field of aviation vehicle design. Background technique [0002] Winglets are used for subsonic aircraft, mainly including civil aviation passenger aircraft, military transport aircraft, aerial refueling aircraft, early warning aircraft and unmanned aerial vehicles. In the subsonic aircraft in the world today, some winglets are set up to improve the flow of the airflow in the span of the wing, reduce the induced drag of the wing, reduce fuel consumption, and improve economic performance. [0003] But not all subsonic aircraft use winglets. The first is the cost issue. The installation of winglets increases the design and manufacturing costs, and the installation of winglets on passenger aircraft will cost hundreds of thousands of dollars. Secondly, the aircraft performs various tasks, and the winglets can only exert their advantages to the greatest extent during the cruise process, that i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C3/36B64C3/38
CPCB64C3/36B64C3/385
Inventor 魏凯陈迪朱振宇
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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