Composite Wing Flutter Speed and Frequency due to Variable Control Surface Deflection in Low Speed Wind Tunnel

Abstract:

Flutter is a dynamic instability problem represents the interaction among structural, aerodynamic, elastic and inertial forces and occurred when the energy is continuously transformed by the surrounding fluids to a flying structure in the form of kinetic energy. The study was conducted to investigate the relationship of the control surface deflection angle to the flutter speed and the flutter frequency. A wind tunnel test was performed using a flat plate wing made of composite material. It was found that by deflecting the control surface up to 45°, the flutter speed reduced almost linearly from 35.6 m/s to 22.7 m/s. The flutter frequency greatly reduced from 48 Hz without the control surface deflected to 34 Hz with the control surface deflected at 15°. After 15° deflection up to 45°, the flutter frequency reduced almost linearly.

• Periodical: Applied Mechanics and Materials (Volume 390)
• Pages: 3-7
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.390.3
• Online since: August 2013
• Authors: Muhammad Iyas Mahzan, Sallehuddin Muhamad, Sa’ardin Abdul Aziz, Mohamed Sukri Mat Ali
• Keywords: Accelerometer, Arduino UNO, Flat Plate Wing Composite, Flutter Frequency, Flutter Speed, Low Speed Wind Tunnel Testing, Variable Control Surface Deflection

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