Suscripción a Biblioteca: Guest
Sixth International Symposium on Turbulence and Shear Flow Phenomena
June, 22-24, 2009 , Seoul National University, Seoul, Korea

DOI: 10.1615/TSFP6

Rapid modification of the flow field about a free moving airfoil by controlled, trapped vorticity concentrations

pages 873-878
DOI: 10.1615/TSFP6.1400
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SINOPSIS

The dynamic coupling between trailing edge flow control and the unsteady motion of a maneuvering airfoil is investigated in wind tunnel experiments. The airfoil is mounted on a 2-DOF traverse and the commanded maneuvers are effected without moving control surfaces. Bi-directional changes in the pitching moment over a range of angles of attack are effected by controllable, nominally-symmetric trapped vorticity concentrations on both the suction and pressure surfaces near the trailing edge. Manipulation and regulation of vorticity concentrations are effected by hybrid actuators comprised of a miniature [Ο(0.01c)] obstruction integrated with synthetic jet actuators.

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