Retractable canard device for morphing aircraft and using method thereof

Abstract

The invention provides a retractable canard device for a morphing aircraft and a using method thereof. A cabin door is automatically opened when the canard is unfolded, an opening of a fuselage is automatically closed after the canard is retracted, and the integrity and smoothness on the outer surface of the canard are kept. According to the retractable canard device designed by the invention, under the drive of a canard drive assembly, the canard can be retracted into the fuselage when not needed, and the canard can be unfolded when needed; meanwhile, the design between the canard drive assembly and a cabin door drive assembly is linkage, when the canard needs to be unfolded or retracted, the cabin door can be automatically opened and closed, and only one motor is used for realizing the cooperative control of the retraction of the canard and the opening and closing of the cabin door. In addition, a flexible sealing piece is arranged on the cabin door, so that the sealing function of the canard in an unfolded state is realized, the integrity and smoothness on the outer surface of the fuselage are ensured, and the adverse influence of the canard retraction on the aerodynamic and stealth performance of the aircraft is minimized.

Description

technical field [0001] The invention relates to the field of aircraft structure design, in particular to a retractable canard device for a variant aircraft and a use method thereof. Background technique [0002] The retractable canard is an important means to change the shape of the variant aircraft and improve the performance of the aircraft. For example, the former Soviet Tu-144 aircraft used a pair of retractable canards on the nose to improve the characteristics of the poor take-off and landing characteristics of the delta wing with a small aspect ratio. The fan wing put out balances the phenomenon that the center of lift moves backward when the supersonic flight and the main wing are swept back. [0003] In recent years, there have been more and more researches on stealth aircraft in various countries, and higher requirements have been put forward for the design of retractable canards. From the perspective of eliminating the corner reflector effect and forming a lift ...

AI Technical Summary

Problems solved by technology

The fan wing is a flat plate structure with a thin thickness, no modification of the leading edge, and low aerodynamic efficiency, which cannot meet the requirements of modern high-performance stealth aircraft

In addition, the existing canard retractable method based on intelligent structures and materials is still in the conceptual research stage, and there is still a long way to go before practical engineering.

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