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Meeting	ACGS Committee Meeting 95 - Salt Lake City - March 2005
Agenda Location	6 SUBCOMMITTEE D - DYNAMICS, COMPUTATIONS 6.3 Aerodynamic Flow Control
Title	Aerodynamic Flow Control
Presenter	James Myatt
Affiliation	AFRL Dayton
Available Downloads*	presentation
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Abstract	The integration of feedback control with active flow control methods (synthetic jets, blowing, suction, or pulsed jets) will enable the development of aircraft having designs optimized for requirements other than those associated with aerodynamic performance. Research in this multidisciplinary effort focuses on two areas: (1) developing methods for modeling the relationship between the flow control actuators and the aerodynamic response, and (2) control law design for these models. Two approaches to model development are considered. The approach that is more immediately applicable is the construction of low-order models based on experimental data. These models are used for control law design, and the control law is then tested in simulation and validated in experiment. In the second approach, more mathematical rigor is sought in an effort to explore a larger design space before hardware selection occurs, thereby increasing the possibility for a better solution. Applic! ations of this technology include drag reduction, noise reduction, and ultimately the use of flow control devices to replace traditional aircraft control surfaces. Efforts to reduce drag fulfill a near-term objective to improve the fuel efficiency of air and ground vehicles. Improved fuel efficiency will, in turn, increase range, loiter time, and payload. Lower acoustic levels will apply to areas ranging from structural load reduction in weapons bays to noise reduction in automobile passenger compartments. Finally, the ability to maneuver aircraft using flow control devices rather than deflecting control surfaces will help air vehicles survive in hostile environments. Experimental demonstrations of the use of feedback control in conjunction with active flow control are presented for the control of the motion of a pitching airfoil and for separation control on an airfoil.