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| EFFECTS OF MODE LOCALIZATION ON T-TAIL FLUTTER CHATACTERISTICS |
| YANG Fei1 ;YANG Zhi-chun2 |
| (1 Stress Department, Shanghai Aircraft Design and Research Institute of COMAC, Shanghai, 200232, China) (2 School of aeronautics, Northwestern Polytechnical University, Xi’an, 710072, China) |
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Abstract The effects of mistuning on the aeroelastic characteristics of T-tail structure were investigated using the beam T-tail model as example. A modal flutter analysis procedure for T-tail structure was used to account for the effects of mass and stiffness mistuning. Mode localization design of beam T-tail structure was made by introducing mass mistuning on the tip of horizontal stabilizer and stiffness mistuning at the root of horizontal stabilizer. Simulation results show that: the natural frequency and mode shape is changed by mode localization, and with the decrease of mistuning, the flutter velocity will decrease as the mode localization strength increases.
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Received: 20 May 2009
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Corresponding Authors:
YNAG Zhi-chun
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2010, Vol. 29 
