A retractable canard device for variant aircraft and its application method
A variant aircraft, retractable technology, applied in the direction of supersonic aircraft, motor vehicles, aircraft, etc., can solve problems such as unsatisfactory, low aerodynamic efficiency, engineering practical distance, etc., to ensure integrity and smoothness, structure and logic simplified effect
Active Publication Date: 2020-12-29
CHANGAN UNIV
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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.
Method used
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Embodiment Construction
[0046] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0047] The retractable canard device comprises two sets of hatch assemblies, a set of hatch drive assemblies, a set of canard assemblies, a set of canard drive assemblies and a central wing box 6 .
[0048] like Figure 7 and Figure 8 As shown, a canard assembly includes a canard 5 and a canard shaft 7, the canard 5 is fixedly connected to the canard shaft 7, and the canard shaft 7 is installed on the central wing box 6 through a vertical rotation pair .
[0049] like Figure 16 ~ Figure 19As shown, a set of canard drive assembly includes a sheave 8, a dial 9, a dial rotating shaft 10 and a motor 11, the sheave 8 and the dial 9 form a set of sheave mechanisms; the sheave 8 is provided with A radial groove 81, an arc-shaped groove 82 is respectively arranged on both sides of the radial gr...
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The present invention proposes a retractable canard device for a variant aircraft and its application method. The cabin door is automatically opened when the canard is unfolded, and the opening of the fuselage is automatically closed after the canard is retracted, and the outer surface is kept intact and clean. smooth. The retractable canard device designed by the present invention is driven by the canard drive assembly, the canard can be retracted into the fuselage when not needed, and the canard can be unfolded when needed. At the same time, the canard drive assembly and the hatch drive assembly It is designed to be linked. When the canard needs to be extended or retracted, the hatch can be opened and closed automatically. Only one motor can realize the coordinated control of the retraction of the canard and the opening and closing of the hatch. In addition, by setting the flexible sealing sheet on the hatch, the sealing function is realized when the canards are deployed, ensuring the integrity and smoothness of the outer surface of the fuselage, and minimizing the adverse effects of the canards on the aerodynamic and stealth performance of the aircraft. lowest.
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 ...
Claims
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IPC IPC(8): B64C30/00B64C23/06
CPCB64C23/06B64C30/00Y02T50/10
Inventor 王宁孙中超赵姣付颖斌
Owner CHANGAN UNIV