Active Combustion Control of Augmentor Dynamics using Robust High-Frequency Energy Deposition

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-14-C-0344
Agency Tracking Number: N14A-004-0202
Amount: $79,999.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N14A-T004
Solicitation Number: 2014.A
Solicitation Year: 2014
Award Year: 2014
Award Start Date (Proposal Award Date): 2014-09-09
Award End Date (Contract End Date): 2015-04-09
Small Business Information
1665 E. 18th Street, Suite 112, Tucson, AZ, 85719
DUNS: 058268652
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Nathan Tichenor
 Director of Aerospace Sci
 (979) 485-9232
Business Contact
 Margaret Chiang
Title: Director of Advanced Prog
Phone: (310) 261-2075
Research Institution
 Texas A&M University
 Heather Henry
 400 Harvey Mitchell Parkway S.
Suite 300
College Station, TX, 77845-4375
 (979) 845-6733
 Nonprofit college or university
Combustion instability, or screech, occurs in many modern gas turbine systems, and is due to the complex physical coupling of the acoustic resonances in the combustion chamber with fluctuations in the heat release of the combustion process. These instabilities can produce large pressure fluctuations that can be severe enough to damage engine hardware. Next-generation gas turbines will increase the desired range of operability for the system and further challenge the ability to manage instabilities. Active control of such oscillations will allow for more efficient, lower emissions engine designs. In an effort to increase engine performance, while simultaneously enabling system weight reductions, PM & AM Research, in collaboration with Texas A & M University, propose to demonstrate the feasibility of depositing energy using robust, high-frequency"plasma"actuators within a thrust augmentor to achieve efficient active screech suppression in high-performance gas turbine engines. Our novel and patented technologies will be leveraged in a systematic development campaign, utilizing modeling, laboratory demonstrations, and engine testing, to successfully demonstrate the feasibility of our active screech suppression approach.

* Information listed above is at the time of submission. *

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