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Completed TRL 6 (started at 3, targeting 6)
NASA's aircraft noise reduction research is being demonstrated in the Landing Gear Noise Reduction (LGNR) Sub-Project under the Flight Demonstrations and Capabilities Project. Aircraft noise due to landing gear is an issue for communities situated near airports. NASA Aeronautics is developing ways to reduce landing gear noise impacts on the community. The Landing Gear Noise Reduction (LGNR) Sub-Project is an effort to demonstrate in flight the benefits of novel gear and wheel cavity treatments on reducing airframe noise as well as to verify and validate noise prediction tools and methodologies using flight test data.
The LGNR Sub-Project will demonstrate in flight landing gear porous fairing and wheel cavity treatments that reduce the airframe component of community noise associated with the main landing gear (MLG) on a G-III aircraft. The Sub-Project will also validate an advanced, physics-based methodology for the accurate prediction of airframe noise to facilitate future noise reduction research. During flight testing, the acoustic signature benefits of the Adaptive Compliant Trailing Edge (ACTE) technology will also be assessed. Through demonstrating and promulgating the benefits of airframe noise reduction treatments, as well as an advanced methodology for accurate airframe noise prediction, the LGNR Sub-Project will inform future airframe designs to enable quieter operations.
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