Accession Number : ADA464389


Title :   Reactive Flow Control of Delta Wing Vortex (Postprint)


Descriptive Note : Conference paper


Corporate Author : OHIO UNIV ATHENS DEPT OF ELECTRICAL AND COMPUTER ENGINEERING


Personal Author(s) : Liu, Yong ; Mu, Ming ; Zhu, Jim ; Lawrence, Douglas A ; Gutmark, Ephraim J ; Myatt, James H ; May, Cameron A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a464389.pdf


Report Date : Aug 2006


Pagination or Media Count : 27


Abstract : In this paper, the reactive flow control of delta wing leading edge vortices using along-core pulse width modulation (PWM) flow injection is presented. Leading edge vortices on the upper surface of a delta wing can augment lift. Manipulating breakdown points of leading edge vortices can effectively change the delta wing's lift and drag and generate attitude control torque. In this paper, a dynamic model of active flow control of vortex break down points is identified from wind tunnel data using a model scheduling method. Based on the identified model, a closed-loop active flow controller is developed. Simulation and real-time wind tunnel test show that the closed-loop controller can effectively manipulate the upper surface pressure of the delta wing, which indicates the closed-loop controller can effectively control vortex breakdown points.


Descriptors :   *ATTITUDE CONTROL SYSTEMS , *LEADING EDGES , *DELTA WINGS , SYMPOSIA , WIND TUNNEL MODELS , LIFT , VORTICES


Subject Categories : Aerodynamics
      Fluid Mechanics
      Computer Programming and Software
      Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE