Maneuvering aspects and 3D effects of active airfoil flow control

Itay Timor, Eli Ben-Hamou, Yair Guy, Avi Seifert*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An active flow control experiment was conducted on a cropped NACA 0018 airfoil to study 3D effects and maneuverability aspects made possible by the 14 addressable, segmented fluidic piezoelectric actuators installed in the airfoil. The actuators were installed at the corner of the cropped region, inclined at 30 degrees to the local surface, facing downstream. Operating all actuators at unison significantly increased lift and generated a pitch-down moment. Operating all actuators at the same magnitude but varying the phase along the span generated larger lift-increment, with respect to the uniform phase excitation, especially when single or pairs of actuators operated at the same phase, and every other pair operated in anti-phase. Significant rolling moment can be generated when only half-span of the wing is actuated. The latter effect persists to the leading edge even though introduced at 88% of the chord. When a pair, out of the possible fourteen actuators is not operating, very little of the control authority is lost. This is an important finding when issues like fault tolerance and robustness of fluidic-Piezo actuators are considered.

Original languageEnglish
Title of host publication2nd AIAA Flow Control Conference
StatePublished - 2004
Event2nd AIAA Flow Control Conference 2004 - Portland, OR, United States
Duration: 28 Jun 20041 Jul 2004

Publication series

Name2nd AIAA Flow Control Conference

Conference

Conference2nd AIAA Flow Control Conference 2004
Country/TerritoryUnited States
CityPortland, OR
Period28/06/041/07/04

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