Transactions of Nanjing University of Aeronautics & Astronautics
Nonlinear Flutter Studies on Control Surface Freeplay
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Abstract:
The frequent occurrence of control surface vibration has become one of the key problems affecting aircraft safety. The source of the freeplay of the control surface is studied， and a measurement device is developed. A nonlinear flutter analysis method under trimmed flight condition is proposed based on the discrete state-space method. Consequently， the effects of center-type freeplay and the freeplay with preload on flutter characteristics are analyzed， and the effects of preload on nonlinear flutter are verified by wind tunnel tests of a single wing model.
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Project Supported:
This work was supported by the National Natural Science Foundation of China （No.11972296）.
Clc Number:
TN925
CHINA AERO-SCIENCES
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