Journal
JOURNAL OF AIRCRAFT
Volume 46, Issue 3, Pages 791-799Publisher
AMER INST AERONAUT ASTRONAUT
DOI: 10.2514/1.34685
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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 result's are compared with a built-up structural model of the proposed full scale morphing vehicle.
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