Improving Weapons Bay Acoustical Environments

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-07-M-3717
Agency Tracking Number: F071-256-0273
Amount: $99,988.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: AF071-256
Solicitation Number: 2007.1
Small Business Information
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 F/A-22 main 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 F/A-22 aircraft, as well as the requirement to carry and release “smart” weapons throughout this envelope. This extremely harsh 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 flow control strategy that effectively lowers the tonal and broadband dynamic loading of the F/A-22 main weapons bay, while minimizing additional aircraft weight. This strategy (referred to as the “Hybrid Acoustic Suppression”) will employ flow control techniques applied to both the forward and aft portions of the bay, producing attenuation over the entire flight envelope and as the cavity characteristics switch between tonal and broadband. Phase I will involve technology maturation through high-resolution Large Eddy Simulation (LES), complemented by comprehensive wind tunnel testing with PIV flow visualization. The existing F/A-22 leading edge spoiler and aft wall ramp will serve as benchmarks from which acoustic benefit can be traded against any weight, cost, and/or aircraft/mission penalties.

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

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