颤振
翼
气动弹性
结构工程
振动
折叠(DSP实现)
空气动力学
航空航天工程
工程类
地质学
材料科学
机械
物理
声学
作者
Matthew Snyder,Brian Sanders,F. Eastep,Geoffrey J. Frank
出处
期刊:Journal of Aircraft
[American Institute of Aeronautics and Astronautics]
日期:2009-05-01
卷期号:46 (3): 791-799
被引量:47
摘要
Studies are presented that characterize the dynamic aeroelastic aspects of a morphing aircraft design concept. The notion of interest is a folding wing design resulting in large-scale wing area changes. A finite element approach is used to investigate the sensitivity of natural frequencies and flutter instabilities to the wing position (e.g., fold angle), actuator stiffness, and vehicle weight. Sensitivities in these areas drive design requirements and raise flight envelope awareness issues. The study is presented in two parts as a comparison between two models of varying complexity. A simple folding wing model, based on the Goland wing, is analyzed and results are compared with a built-up structural model of the proposed full scale morphing vehicle.
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