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.

Report Date:

2006-08-01

Pagination or Media Count:

27.0

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 wings 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