Modeling and Closed-Loop Control of Complex Flows Over Aerodynamic Surfaces

Award Information
Agency:
Department of Defense
Branch:
Air Force
Amount:
$100,000.00
Award Year:
2001
Program:
STTR
Phase:
Phase I
Contract:
F49620-01-C-0048
Agency Tracking Number:
F013-0010
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
SCIENTIFIC SYSTEMS COMPANY, INC.
500 West Cummings Park, Suite 3000, Woburn, MA, 01801
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 Pablo Arambel
 Research Engineer
 (781) 933-5355
 pablo@ssci.com
Business Contact
 Raman Mehra
Title: President
Phone: (781) 933-5355
Email: rkm@ssci.com
Research Institution
 TEXAS ENGINEERING EXPERIMENT STATION
 Carol J Cantrell
 332 Wisenbaker, Engineering Research Center
College Station, PA, 77843
 (979) 862-1696
 Nonprofit college or university
Abstract
The use of active flow control can reduce or eliminate the number of aerodynamic control surfaces in aircraft. Elimination of control surfaces results in a reduction of weight and drag, as well as radar observability. Recent advances in MicroElectromechanical Systems (MEMS) technology have rendered it a feasible alternative for unsteady flow sensing and control. This project will be performed jointly by Scientific Systems Co. and Prof. Rediniotis from Texas A&M University, and will demonstratethe use of MEMS for closed-loop flow control. In particular, a delta wing is controlled by actively inducing or delaying Vortex Breakdown (VBD) so as to globally affect the flow over the wing in a desired way. The feedback mechanism is hingeless andconsists of MEMS-based flow sensors and small Pneumatic Vortex Control (PVC) jet actuators. During this effort, we will develop modeling and control design algorithms for active flow control. Proposed Phase I tasks include: (a) acquisition of unsteady flowdata, (b) control-oriented reduced order unsteady flow modeling using wavelets, indicial functions, and system identification techniques, (c) feedback controller design and numerical evaluation using robust control techniques, and (d) planning forreal-time flow control demonstration in Phase II. Unsteady flow data will be acquired from the facilities in the fluid dynamics laboratory at Texas A&M University.Active control of vortical flow fields has applications in jet engines and turbomachinery,rotorcraft, air traffic control, and UAV formation flying. MEMS-based sensing and actuation technology has applications in NDE of structures, and bio-mimetics.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government