Enhanced Acoustical Environment for Modern Weapons Bays

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-09-C-3906
Agency Tracking Number: F073-087-0533
Amount: $964,558.00
Phase: Phase II
Program: SBIR
Awards Year: 2009
Solicitation Year: 2007
Solicitation Topic Code: AF073-087
Solicitation Number: 2007.3
Small Business Information
Combustion Research and Flow Technology,
6210 Keller's Church Road, Pipersville, PA, 18947
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Neeraj Sinha
 Vice President & Technica
 (215) 766-1520
 sinha@craft-tech.com
Business Contact
 Brian York
Title: Principal Scientist & Tre
Phone: (215) 766-1520
Email: york@craft-tech.com
Research Institution
N/A
Abstract
The F-35 main weapons bay experiences severe acoustic loading when exposed to the freestream. The severity and attenuation of this loading is exacerbated by the very complex geometry of the weapons bay and the highly non-uniform approach flow. This extremely harsh aeroacoustic environment can also impact components that are mounted within the bay itself, including carriage stores that contain sensitive electronics and control surfaces. CRAFT Tech proposes the development and demonstration of a robust, highly integratable flow control strategy that effectively lowers the high dynamic loading of the F-35 main weapons bay, while minimizing additional aircraft weight. This hybrid strategy, entitled HyFACT, considers flow control techniques applied to either the forward or the aft portions of the bay, producing attenuation over the entire subsonic and supersonic flight envelope. Phase II will involve technology maturation through high-resolution Large Eddy Simulation (LES), complemented by comprehensive wind tunnel testing. The noise suppression technology will be scaled-up to flight. A full-scale, flightworthy HyFACT demonstration prototype hardware will be developed and delivered to the Air Force for flight-testing on the F-35 aircraft. BENEFIT: The Phase II F-35 flight demonstration of the HyFACT noise suppression system, which will reduce flow-induced cavity acoustic loads to acceptable levels without significantly impacting the aircraft weight, will provide the necessary proof-of-concept for future technology commercialization. CRAFT Tech will engage in strategic partnering and licensing with airframe prime contractors and/or sub-contractors. CRAFT Tech will provide the knowledge, expertise and understanding necessary to develop HyFACT kits for the F-35, based on the success of a follow-on flight test. Spin-off applications of this flow control technology include: jet engine noise reduction, Directed Energy (DE) beam rectification, IR signature reduction for military, as well as commercial aircraft, etc.

* information listed above is at the time of submission.

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