Development and Application of the High Bandwidth Powered Resonance Tube

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F49620-02-C-0062
Agency Tracking Number: F003-0219
Amount: $499,868.00
Phase: Phase II
Program: STTR
Awards Year: 2002
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Innovative Technology Applications
PO Box 6971, Chesterfield, MO, 63006
Duns: 609463302
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Alan Cain
 (314) 576-1639
Business Contact
 Nancy Hazinski
Title: Secretary/Treasure
Phone: (314) 576-1639
Research Institution
 Illinois Institute of Technology
 Mary T Spina
 3300 South Federal St., MB
Chicago, IL, 60616
 (312) 567-3035
 Domestic nonprofit research organization
"The proposed Phase 2 program focuses on the development of Powered Resonance Tube (PRT) actuators for application to Active Flow Control (AFC). For effective control across the full operating envelope of an air vehicle, high bandwidth and authority arerequired. In Phase 1, a new variable-frequency PRT actuator concept was developed and its feasibility was demonstrated. In Phase 2, the new actuator concept will be refined in order to optimize its efficiency and effectiveness. Modified designs thatpermit greater geometric flexibility will also be explored. Experimental, computational and analytical methods will be used in the actuator development and refinement. Scaling information for future applications will also be developed. The PRT actuatoris applicable to both classes of AFC mechanisms: the excitation of instability waves, and forcing at higher frequencies in the inertial subrange of the turbulent flow. Specific applications to be investigated in Phase 2 are: (1) the enhancement ofmixing in a supersonic shear layer through the excitation of instability waves, and (2) the reduction of impinging jet unsteady loads, tonal and non-tonal noise by high-frequency forcing. An AFC preliminary design tool, which incorporates the PRT actuatorscaling information and employs a graphical user interface, will also be developed."

* information listed above is at the time of submission.

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