Enhanced Acoustical Environment for Modern Weapons Bays

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-08-M-3801
Agency Tracking Number: F073-087-0533
Amount: $99,990.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: AF073-087
Solicitation Number: 2007.3
Small Business Information
COMBUSTION RESEARCH & FLOW TECHNOLOGY, I
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 & Technical Director
 (215) 766-1520
 sinha@craft-tech.com
Business Contact
 Neeraj Sinha
Title: Vice President & Technical Director
Phone: (215) 766-1520
Email: sinha@craft-tech.com
Research Institution
N/A
Abstract
The JSF weapons bay experiences severe acoustic loading when exposed to the freestream. The severity and attenuation of this loading is exacerbated by the flight envelope of the JSF aircraft, as well as the requirement to carry and release “smart” weapons over an extended envelope. This extremely harsh environment impacts components that are mounted within the bay, including carriage stores that contain sensitive electronics and control surfaces. Implementation of a suitable noise suppression solution is complicated by its non-rectangular bay shape bay and multiple-sweep leading edge that challenge aircraft integration. CRAFT Tech proposes development and demonstration of a robust flow control strategy that effectively lowers the dynamic loading of the JSF weapons bay, while minimizing additional aircraft weight. This strategy will selectively employ flow control techniques applied to both the forward and/or aft portions of the bay, producing attenuation over the entire flight envelope. Phase I will involve technology maturation through high-resolution Large Eddy Simulation (LES), complemented by comprehensive wind tunnel testing with advanced optical diagnostics. The flow control will be fully integrated with JSF’s highly non-rectangular weapons bay and its multiple-sweep leading edge. Acoustic benefits of the system will be traded against weight, cost, and/or aircraft/mission penalties.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government