A broadband liner design optimization includes utilizing in-duct attenuation predictions with a statistical fan source model to obtain optimum impedance spectra over a number of flow conditions for one or more liner locations in a bypass duct. The predicted optimum impedance information is then used with acoustic liner modeling tools to design liners having impedance spectra that most closely match the predicted optimum values. Design selection is based on an acceptance criterion that provides the ability to apply increasing weighting to specific frequencies and/or operating conditions. One or more broadband design approaches are utilized to produce a broadband liner that targets a full range of frequencies and operating conditions.
Statistically based approach to broadband liner design and assessment
2016-01-26
Patent
Elektronische Ressource
Englisch
Time-Domain Broadband Liner Optimization
AIAA | 2010
|Bituminous Pavement Smoothness: Statistically Based Approach to Acceptance
Transportation Research Record | 1996
|Bituminous Pavement Smoothness: Statistically Based Approach to Acceptance
Transportation Research Record | 1996
|