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

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
52609
Program Year/Program:
2001 / STTR
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 - Ste 3000 Woburn, MA 01801-6562
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2001
Title: Modeling and Closed-Loop Control of Complex Flows Over Aerodynamic Surfaces
Agency / Branch: DOD / USAF
Contract: F49620-01-C-0048
Award Amount: $100,000.00
 

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.

Principal Investigator:

Pablo O. Arambel
Research Engineer
7819335355
pablo@ssci.com

Business Contact:

Raman K. Mehra
President
7819335355
rkm@ssci.com
Small Business Information at Submission:

SCIENTIFIC SYSTEMS COMPANY, INC.
500 West Cummings Park, Suite 3000 Woburn, MA 01801

EIN/Tax ID: 043053085
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
TEXAS ENGINEERING EXPERIMENT STATION
332 Wisenbaker, Engineering Research Center
College Station, PA 77843
Contact: Carol J. Cantrell
Contact Phone: (979) 862-1696
RI Type: Nonprofit college or university