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The Design and Research of Distributed Multi-freedom Active Morphing Wing

Author: YuanZuo
Tutor: TangDeWei
School: Harbin Institute of Technology
Course: Mechanical Design and Theory
Keywords: Deformed wing Active deformation unit A shape memory alloy Distributed Multiple degrees of freedom
CLC: V224
Type: Master's thesis
Year: 2011
Downloads: 52
Quote: 0
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Abstract


Variant aircraft during the flight , according to changes in the external environment and flight status to change its shape, so as to get the best aerodynamic layout , improve flight performance . The deformed wing is an important part of the research aircraft variants , distributed multi- degree of freedom active deformation wing aspects of research . Based on the principle of differential drive shape memory alloy (SMA) , proposed the concept of active deformation unit of active deformation unit works to establish a mathematical model of the cell corner , forward kinematics equations derived deformation unit ; utilization unit combination of ideas and specific portfolio strategy , distributed multi- degree of freedom active deformation of the wing configuration and its forward kinematics model . Of SMA Liang-Rogers this constitutive equations and mechanics , heat transfer learn the relevant theoretical foundation to establish the SMA driver is the mathematical model ; design and build the drive performance test platform , completed under different experimental conditions SMA wire the test experiments , SMA key performance parameters , for active deformation wing design provides reference data . Using based on the concept of active deformation unit and distributed multi- degree of freedom active deformation theory , the use of mathematical models and performance parameters of the drive , active deformation unit with locking release mechanism is designed to analyze the statics and kinematics characteristics ; dimensional axial portfolio strategy , consisting of multiple degrees of freedom by eight unit body active deformation of the wing structure, static and modal analysis , checking the strength of the structure to obtain the structure of the first six natural frequencies and the corresponding vibration type. Developed an experimental model of active deformation units , structures active deformation unit test the locking release mechanism experiment unit corner experiments as well as the element stiffness experiments . The experimental conclusions validation active deformation of the cell design and the correctness of the theory .

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