Nonlinear aeroelastic coupled trim and stability analysis of rotor-fuselage |
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Authors: | Xin-yu Hu Jing-long Han Mei Yu |
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Institution: | 1. Department of Engineering Mechanics,College of Sciences,China University of Mining and Technology,Xuzhou 221008,Jiangsu Province,P.K.China 2. Institute of Vibration Engineering Research,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China |
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Abstract: | Based on the Hamilton principle and the moderate deffection beam theory, discretizing the helicopter blade into a number of beam elements with 15 degrees of freedom, and using a quasi-steady aero-model, a nonlinear coupled rotor/fuselage equation is established. A periodic solution of blades and fuselage is obtained through aeroelastic coupled trim using the temporal finite element method (TEM). The Peters dynamic inflow model is used for vehicle stability. A program for computation is developed, which prod... |
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Keywords: | nonlinear aeroelasticity rotor/fuselage coupling temporal finite element method (TEM) stability |
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