Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-05-31

Total Pages: 58

ISBN-13: 9781720564010

The technical approach made use of the Cessna Model 182E aircraft used in the previous effort as a test bed for noise control application. The present phase of the project reports on flight test results during application of various passive noise treatments in an attempt to verify the noise sources and paths for the aircraft. The data presented establishes the level of interior noise control that can be expected for various passive noise control applications within the aircraft cabin. Subsequent testing will address specific testing to demonstrate the technology available to meet a specified level of noise control by application of passive and/or active noise control technology.Unruh, James F. and Till, Paul D. and Palumbo, Daniel L. (Technical Monitor)Langley Research CenterGENERAL AVIATION AIRCRAFT; CESSNA AIRCRAFT; AIRCRAFT NOISE; FLIGHT TESTS; NOISE REDUCTION; MICROPHONES; SOUND PRESSURE; IN-FLIGHT MONITORING; AIRCRAFT COMPARTMENTS