Reactive Flow Control of Delta-Wing Vortex

Autor:	Ming Wu, Cameron May, James H. Myatt, Ephraim Gutmark, Yong Liu, Douglas A. Lawrence, J. Jim Zhu
Rok vydání:	2008
Předmět:	Adverse pressure gradient Lift-to-drag ratio Engineering Flow control (fluid) Leading edge Delta wing Control theory business.industry Vortex lift Wingtip vortices Aerospace Engineering business Vortex
Zdroj:	Journal of Aircraft. 45:880-892
ISSN:	1533-3868 0021-8669
Popis:	In this paper, the reactive flow control of delta-wing leading-edge vortices using along-core pulse-widthmodulation 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 black-box dynamic model for active flow control of vortex breakdown 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 that the closed-loop controller can effectively control vortex breakdown points.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::862a6d975cc7bc6f90e540ed114d9263 https://doi.org/10.2514/1.28449 Zobrazit plný text záznamu