Foam-Metal Liner Attenuation of Low-Speed Fan Noise

By: Administration (Nasa), National Aeronaut

A foam-metal liner for attenuation of fan noise was developed for and tested on a low speed fan. This type of liner represents a significant advance over traditional liners due to the possibility for placement in close proximity to the rotor. An advantage of placing treatment in this region is the modification of the acoustic near field, thereby inhibiting noise generation mechanisms. This can result in higher attenuation levels than can be achieved...

• Format: Paperback
• Language: English
• ISBN: B08DSS7FKQ
• ISBN13: 9798670059268
• Release Date: January 1
• Publisher: Independently Published
• Length: 26 Pages
• Weight: 0.19 lbs.
• Dimensions: 0.1" x 8.5"