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Smart skin and actuators for morphing structures

机译:用于变形结构的智能皮肤和执行器

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Morphing technology on aircrafts has found increased interest over the last decade because it is likely to enhance performance and efficiency over a wider range of flight conditions. The key technologies in morphing aircrafts include adaptive structures, deformable smart skin, driving actuators, flight dynamics and flight control. Among them, the deformable smart skin and light-weight driving actuators have been the main obstacles to the real-world implementation of the morphing aircraft. The difficulties in the smart skin rest on the contradiction between its ability to resist aerodynamic load in the normal direction and the in-plane flexibility for morphing functions. This contradiction cannot be solved by using sophisticated properties of the skin materials. It can only be solved by new skin structures, which give anisotropic stiffness for bending and in-plane deformation. In this article two skin structures for morphing aircrafts, the wavy skin structure and the honeycomb skin structure, are introduced. The actuators for morphing aircrafts are required to have large stroke, large output force, good compactness, and good controllability. In this article, piezoelectric-hydraulic actuators are introduced.
机译:在过去十年里,飞机的变形技术已经发现兴趣增加,因为它可能会在更广泛的飞行条件下提高性能和效率。变形飞机的关键技术包括自适应结构,可变形智能皮肤,驾驶致动器,飞行动力学和飞行控制。其中,可变形的智能皮肤和轻量级驾驶致动器一直是真实世界的实现的主要障碍。智能皮肤中的困难依赖于其在正常方向上抵抗空气动力载荷的能力与变形功能的面内灵活性之间的矛盾。通过使用皮肤材料的复杂性质,不能解决这种矛盾。它只能通过新的皮肤结构来解决,这给出了弯曲和面内变形的各向异性刚度。在这篇文章中,介绍了用于传感器,波浪状皮肤结构和蜂窝状皮肤结构的两个皮肤结构。用于变形飞机的执行器需要具有大冲程,大输出力,良好的紧凑性和良好的可控性。在本文中,引入了压电液压执行器。

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