A Snapshot of Active Flow Control Research at NASA Langley

AIAA2002-3155SNAPSHOT OF ACTIVE FLOW CONTROl, RESEARCH AT NASA LANGLEYAnthony E. Washburn*Susan Althoff Gorton*Scott G. Anders +_r,_&_ L_I_' Research ('enWrHampton, 1',4 23681AbstractNASA Langley is aggressively investigating thepotential advantages of active flow control as opposedto more traditional aerodynamic techniques. Many ofthese techniques will be blended with advancedmaterials and structures to further enhance payoff.Theretbre a multi-disciplinary approach to technologydevelopment is being attempted that includesresearchers from the more historical disciplines of fluidmechanics, acoustics, material science, structuralmechanics, and control theory. The overall goals of thetopics presented are fbcused on advancing the state ofknowledge and understanding of controllablefundamental mechanisms in fluids rather than onspecific engineering problems.An organizational view of current research activitiesat NASA Langley in active flow control as supported byseveral programs such as the Morphing Project underBreakthrough Vehicle Technologies Program (BVT),the Ultra-Efficient Engine Technology Program(UEET), and the 21 _' Century Aircraft TechnologyProgram (TCAT) is presented. On-center research aswell as NASA Langley funded contracts and grants arediscussed at a relatively high level. The products of thisresearch, as part of the fundamental NASA RDoxemment has a royalty-free license 1oexercise all