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Study Results from Brown University Update Understanding of Aerospace Research (Aerodynamic Characterization of a Wing Membrane with Variable...

September 3, 2014

Study Results from Brown University Update Understanding of Aerospace Research (Aerodynamic Characterization of a Wing Membrane with Variable Compliance)

By a News Reporter-Staff News Editor at Defense & Aerospace Week -- Researchers detail new data in Aerospace Research. According to news originating from Providence, Rhode Island, by VerticalNews correspondents, research stated, "Membrane wings with variable compliance have a great potential to improve the maneuverability and performance of micro air vehicles. Moreover, changes in membrane wing compliance might be used by flying animals, such as bats, to control aerodynamic performance."

Our news journalists obtained a quote from the research from Brown University, "In this work, the mechanical properties and aerodynamic performance of a low-aspect-ratio membrane wing with variable compliance was characterized. The membrane was made of dielectric material coated with compliant electrodes and supported by a rigid frame. The compliance of the wing was controlled by applying a voltage across a membrane. The wing model was tested in a wind tunnel. It was found that, when a fixed voltage is applied across the wing membrane, the camber increases, accompanied by a small increase in lift. However, lift is significantly increased when the wing is forced with an oscillating field at specific frequencies. In addition, stall is delayed, and for a range of angle of attacks, there is an increase in lift-to-drag ratio."

According to the news editors, the research concluded: "Fluid dynamics measurements are needed to analyze the fluid-membrane interaction."

For more information on this research see: Aerodynamic Characterization of a Wing Membrane with Variable Compliance. AIAA Journal, 2014;52(8):1749-1756. AIAA Journal can be contacted at: Amer Inst Aeronautics Astronautics, 1801 Alexander Bell Drive, Ste 500, Reston, VA 22091-4344, USA.

The news correspondents report that additional information may be obtained from O.M. Curet, Brown University, Sch Engn, Dept. of Ecol & Evolutionary Biol, Providence, RI 02912, United States. Additional authors for this research include A. Carrere, R. Waldman and K.S. Breuer.

Keywords for this news article include: Providence, Rhode Island, United States, Aerospace Research, North and Central America

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Source: Defense & Aerospace Week

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