中文摘要：

在飞行中有目的地改变机翼后掠和翼展,可以有效地增加机翼的效率,从而适应巡航和高速飞行时的需要。笔者采用连杆滑块的设计思想,提出了一种可变后掠伸缩的变体机翼型结构概念,其变体形式有3种：仅伸缩变体,仅变后掠变体,变后掠并伸缩变体。推导出了在根部输入驱动下变后掠伸缩机翼几种变体的运动学规律,通过仿真验证了变后掠伸缩机翼结构受控运动规律的正确性。通过计算分析,确定了该自适应变体机翼结构的强度薄弱环节。

英文摘要：

With the adaptive wing that is capable of changing its span and sweepback in large scale,the aircraft can meet different requirements as loiter and dash flight missions.In this study,the design concept and construction of the morphing wing are described.The load bearing structure of the wing is designed as a special truss consisting of rotating pivots and driving actuators at the wing root,so that the span and sweepback of the wing can be changed according to the input motions of the driving actuators.With proper control inputs,three different morphing configurations,variable span,variable sweepback and variable span with variable sweepback,of the wing can be achieved.The kinematics of these morphing processes are derived analytically and is verified with numerical simulation.Stress analysis is also performed for the wing structure subjected to the ultimate design flight mission,and the results provide the basis for the optimization of wing structures.