Advanced Composite Acoustic Blanket Development

The Phase II effort will develop and test an optimized fairing blanket treatment based on heterogeneous material design for improved low-frequency performance and improved weight and/or volume to acoustic performance ratios than current, conventionalblankets. The material modeling code validated in Phase I will be refined and an optimization procedure developed. The optimization procedure will integrate the material design model with fairing vibro-acoustic behavior to determine optimized,heterogeneous blanket designs and configuration. Testing of the prototype design will be conducted on a realistic fairing structure under high-intensity acoustic loading in a semi-infinite free-field.