Self-adaptive rhombic wing layout of air vehicles

Abstract

The invention provides a self-adaptive rhombic wing layout of air vehicles. According to the self-adaptive rhombic wing layout of the air vehicles, a nose, a tail, four wings, an engine, a task bin, four connecting arms, hinges and control vanes are involved. The four wings are arranged in a rhombic mode from front to back. The four connecting arms can be telescoped and are transversely or longitudinally arranged in a crisscross mode. The nose and the wings are connected through the hinges, the tail and the wings are connected through the hinges, and the engine and the wings are connected through the hinges. The task bin is connected with the nose, the tail and the engine through the telescopic connecting arms and can be changed according to task requirements. The wings are provided with the control vanes used for controlling flight attitudes. The sweepback angle and the sweep-forward angle of the wings can be changed by telescoping the connecting arms so as to obtain rhombic wing layouts adapting to different flight speeds and improve the aerodynamic performance. The self-adaptive rhombic wing layout of the air vehicles has the advantages of being simple and reliable in structure, low in cost and multiple in function.

Description

technical field [0001] The invention belongs to the technical field of aircraft aerodynamic shape design, and in particular relates to an aircraft adaptive rhombic wing layout. Background technique [0002] No matter in the military or civilian fields, the requirements of economy and long range all put forward higher requirements on the aerodynamic efficiency of aircraft. The overall layout form with excellent aerodynamic efficiency, which can take into account different flight speed ranges of low, cross and supersonic, has always been the eternal pursuit goal of aircraft design. The wing with a large aspect ratio has a small sweep angle, which has better aerodynamic performance at low speed flight, but the wave resistance is relatively large at high speed flight; increasing the sweep angle and reducing the aspect ratio can reduce the supersonic speed. wave resistance, but at the same time it will degrade its low-speed performance. Variable sweep angle is an effective meth...

AI Technical Summary

Problems solved by technology

The wing with a large aspect ratio has a small sweep angle, which has better aerodynamic performance at low speed flight, but the wave resistance is relatively large at high speed flight; increasing the sweep angle and reducing the aspect ratio can reduce the supersonic speed. wave resistance, but at the same time it will degrade its low-speed performance

Variable sweep angle is an effective method for both high and low-speed aerodynamic performance, but the current variable sweep angle aircraft generally realizes the change of wing plane shape and sweep angle through complex mechanisms on the basis of conventional layout aircraft , which increases the weight of the structure, reduces the payload, and increases the cost of operation and maintenance; there is also a plan to use advanced materials such as memory alloys to achieve variable sweep angles, but limited by factors such as the deformation range and reliability of the materials, it has not yet been implemented. It can change the sweep angle in a large range, and it still does not deviate from the idea of ​​conventional layout

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