A flying insect-like flapper actuated by a compressed LIPCA

- Based on general features of flying insects such as wing rotation, wing corrugation and wing clap-fling, we have introduced an insect-mimicking flapper actuated by a compressed unimorph actuator named LIPCA (lightweight piezoelectric composite actuator). The flapping performance of the flapper has been experimentally investigated in terms of flapping angle, flapping frequency and capability of aerodynamic force generation. The flapping angle and wing rotation angle were figured out by examining high-speed camera image by image. The aerodynamic force was calculated by subtracting the inertia force measured in a vacuum chamber from the total force measured in the air. The results confirm that the flapper could successfully produce aerodynamic force when it was operated at the best flapping frequency of 9 Hz and applied voltage of 300 Vpp (voltage peak-to-peak).

[1]  T. Weis-Fogh.  Unusual mechanisms for the generation of lift in flying animals. , 1975, Scientific American.

[2]  C. Ellington.  The novel aerodynamics of insect flight: applications to micro-air vehicles. , 1999, The Journal of experimental biology.

[3]  C. Rees.  Form and function in corrugated insect wings , 1975, Nature.

[4]  Hoon Cheol Park,et al.  Enhancement of a unimorph actuator performance implementing the nonlinear characteristics of piezoceramic wafer (3203HD, CTS) , 2007, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[5]  M. Lighthill.  On the Weis-Fogh mechanism of lift generation , 1973, Journal of Fluid Mechanics.

[6]  P.R. Bandyopadhyay,et al.  Trends in biorobotic autonomous undersea vehicles , 2005, IEEE Journal of Oceanic Engineering.

[7]  C. Ellington,et al.  The three–dimensional leading–edge vortex of a ‘hovering’ model hawkmoth , 1997 .

[8]  C. Rees.  Aerodynamic properties of an insect wing section and a smooth aerofoil compared , 1975, Nature.

[9]  Sanjay P Sane,et al.  The aerodynamics of insect flight , 2003, Journal of Experimental Biology.

[10]  Nam Seo Goo,et al.  Design and evaluation of a LIPCA-actuated flapping device , 2006 .

[11]  Masayoshi Tomizuka,et al.  Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007 , 2007 .

[12]  H. Park,et al.  Characteristics of an Insect-mimicking Flapping System Actuated by a Unimorph Piezoceramic Actuator , 2008 .

[13]  Kwang Joon Yoon,et al.  Design and evaluation of a LIPCA-actuated flapping device , 2005, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[14]  M. Dickinson,et al.  Wing rotation and the aerodynamic basis of insect flight. , 1999, Science.

[15]  T. Maxworthy.  Experiments on the Weis-Fogh mechanism of lift generation by insects in hovering flight. Part 1. Dynamics of the ‘fling’ , 1979, Journal of Fluid Mechanics.