Macro-Fiber Composite actuated simply supported thin airfoils

作者：Bilgen Onur^*; Kocher**erger Kevin B; Inman Daniel J; Ohanian Osgar J III

来源：Smart Materials and Structures, 2010, 19(5): 055010.

DOI：10.1088/0964-1726/19/5/055010

A piezoceramic composite actuator known as Macro-Fiber Composite (MFC) is used for actuation in the design of a variable camber airfoil intended for a ducted fan aircraft. The study focuses on response characterization under aerodynamic loads for circular arc airfoils with variable pinned boundary conditions. A parametric study of fluid-structure interaction is employed to find pin locations along the chordwise direction that result in high lift generation. Wind tunnel experiments are conducted on a 1.0% thick, 127 mm chord MFC actuated bimorph airfoil that is simply supported at 5% and 50% of the chord. Aerodynamic and structural performance results are presented for a flow rate of 15 m s(-1) and a Reynolds number of 127 000. Non-linear effects due to aerodynamic and piezoceramic hysteresis are identified and discussed. A lift coefficient change of 1.46 is observed, purely due to voltage actuation. A maximum 2D L/D ratio of 17.8 is recorded through voltage excitation.

• 出版日期2010-5
• 单位美国弗吉尼亚理工大学(Virginia Tech)