Supporting several of NASA Aeronautics Research Mission Directorate projects and the Fundamental Aeronautics Program, this project's technologies directly address requirements for improvements in noise reduction 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. The resulting adaptive liner capabilities could potentially be used by NASA to more quickly study different passive liner concepts. The proposed adaptive acoustic liner technology has high potential for application in public and private sector commercial airline jet engine systems. This project's technologies, developed for NASA liner concepts, would directly apply to systems operated by other government and commercial enterprises. Government systems that would derive the same benefits would include improvements in noise reduction, prediction, measurement methods, and control for subsonic and supersonic vehicle systems, including fan, jet, turbo-machinery, and airframe noise sources operated by the DoD and all major commercial aviation companies. This technology's attributes for commercial jet engine manufacturers should yield a high potential for private sector commercialization for implementation of tunable characteristics for turbofan engine acoustic liners. Additionally, CRG also sees a future for resulting commercialization of the adaptive liner technologies with commercial turbine generators, marine turbine systems, and the rail industry.