Small Business Innovation Research/Small Business Tech Transfer
Adaptive Drainage Slots for Acoustic Noise Attenuation
Project Description
Cornerstone Research Group, Inc. (CRG), proposes to demonstrate feasibility in the reduction of noise attributed to drainage slots in jet engine acoustic liners. This will be accomplished through the development of design rules for optimum slot design and the implementation of adaptive material technologies. CRG proposes to bring this technology to a technology readiness level (TRL) 2 after the Phase 1 effort and a TRL 4 after the Phase 2 effort. The proposed innovation lies in the recognition that drainage slots in the honeycomb of an acoustic liner may have a significantly adverse effect on its ability to absorb noise. This limits the ability of the acoustic liner to achieve its full potential. The proposed research will enable the acoustic designer to understand and to accurately model the effects of drainage slots on the acoustic impedance characteristics. It will also provide the impetus to find solutions that will counteract the adverse effects of drainage slots through adaptive means.
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Anticipated Benefits
This project's technologies will apply to systems operated by other government and commercial enterprises. Government applications that would benefit would include but not be limited to improvements in noise reduction, prediction, measurement methods and control for subsonic and supersonic vehicle systems including fan, jet, turbomachinery, and airframe noise sources operated by the Department of Defense and all major commercial aviation companies. This technology's attributes are applicable to commercial jet engine manufacturers and should yield a high potential for private sector commercialization for implementation of optimum and adaptive drainage slot design for turbofan engine acoustic liners by GE Aviation, Pratt and Whitney, and Rolls Royce.
Supporting NASA's A2.03 is Aeronautics Research Mission Directorate, this project's technologies directly address requirements for improvements in noise reduction, prediction, measurement methods and control for subsonic and supersonic vehicle systems including fan, jet, turbomachinery, and airframe noise sources. This project's technologies offer system level improvements in noise, emissions, and performance. More »
Supporting NASA's A2.03 is Aeronautics Research Mission Directorate, this project's technologies directly address requirements for improvements in noise reduction, prediction, measurement methods and control for subsonic and supersonic vehicle systems including fan, jet, turbomachinery, and airframe noise sources. This project's technologies offer system level improvements in noise, emissions, and performance. More »
Primary U.S. Work Locations and Key Partners
| Organizations Performing Work | Role | Type | Location |
|---|---|---|---|
| Cornerstone Research Group, Inc. | Lead Organization | Industry | Miamisburg, Ohio |
Langley Research Center
(LaRC)
|
Supporting Organization | NASA Center | Hampton, Virginia |
Primary U.S. Work Locations
-
Ohio
-
Virginia
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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.