1. Radial multi-layered isolator for helicopter interior noise reduction Open Access Author: Autran, Pauline Title: Radial multi-layered isolator for helicopter interior noise reduction Graduate Program: Aerospace Engineering Keywords: helicopter noise reductiongearbox isolationradial multi-layered isolatornatural frequencies of ringstransmissibility File: Download Pauline_Autran_-_thesis_final_version.pdf Committee Members: George A Lesieutre, Thesis Advisor/Co-Advisor