Joint Service Aircrew Mask (JSAM) Rotary Wing (RW): MPU-5 Noise Attenuation Performance
Abstract
Noise attenuation measurements were conducted in accordance with American National Standards Institute (ANSI) S12.6-1997 Methods for Measuring the Real-Ear Attenuation of Hearing Protectors on the Joint Service Aircrew Mask (JSAM) Rotary Wing (RW) MPU-5 with the HGU-56/P with Communications Ear Plugs (CEP) and the HGU-84/P with CEP. Baseline measurements were also conducted with the HGU-56/P and HGU-84/P flight helmets alone. Additional non-ANSI standard attenuation measurements were conducted on the MPU-5 with the Optimized Top Owl (OTO) with CEP and OTO flight helmet alone. The objective of these measurements was to determine if the JSAM-RW performance specification requirements were being met. When worn in combination with the HGU-56/P, HGU-84/P and OTO flight helmets, the MPU-5 with CEP configuration increased noise attenuation across all frequencies, ranging from 125 Hz to 8000Hz, when compared to the helmet only configurations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 09, 2016
- Accession Number
- AD1015171
Entities
People
- Billy Swayne
- Hilary Gallagher