A wing-changing mechanism for an unmanned aerial vehicle that can change the sweep angle synchronously on the same axis and on the same plane

Abstract

The invention discloses a wing-changing mechanism of an unmanned aerial vehicle whose two wings can change the sweep angle synchronously on the same axis and in the same plane, and belongs to the technical field of structural design of the unmanned aerial vehicle. The wing-changing mechanism of the unmanned aerial vehicle includes an upper support plate, a lower support plate, a rotating shaft, a right wing support, a left wing support, a spring, a bump, a limit hook, a rack A and a rack B; the rotating shaft The lower support plate, the left wing support, the right wing support and the upper support plate are connected from bottom to top, a spring is arranged between the left wing support and the lower support plate, and the spring is sleeved on the rotating shaft. The invention can realize the folded storage of the wings of the aircraft, reduce the storage space, and realize canister packaging; can realize the rapid deployment of the wings during the launch stage of the aircraft, can quickly build up lift, and effectively prevent the aircraft from falling or even crashing; the two wings of the aircraft change It is always synchronized and coaxial, and the two wings quickly reach the same plane after launch, reducing the lateral and lateral interference deflection moment as much as possible, which is easy to control.

Description

technical field [0001] The invention belongs to the technical field of structural design of unmanned aerial vehicles, and specifically relates to a wing-changing mechanism of an unmanned aerial vehicle that can synchronously change the sweep angle of two wings on the same axis and in the same plane. Background technique [0002] Certain UAVs require a small footprint for storage and launch, which requires their wings to be fully folded before takeoff. After take-off, the wings need to be deployed rapidly to provide lift. In order to enable the aircraft to change its aerodynamic shape in real time during flight, the sweepback mechanism of the aircraft must be able to realize stepless adjustment and position holding functions, that is, the sweep angle must be able to maintain any angular position within the working range. [0003] Throughout the development history of aircraft, the variant with variable sweep is the most commonly used and most successful variant. Since the 19...

AI Technical Summary

Problems solved by technology

The crank-rocker mechanism drives the rotation of the wings on both sides by the rotation of the crank. There are single-crank and double-rocker forms and double-crank and double-rocker forms. Generally, it is difficult to achieve precise synchronous rotation of the wings on both sides, and it requires The driving torque is relatively large, and it is often used on small bionic flapping-wing UAVs

Images