Accession Number:

ADA589260

Title:

Noise Attenuation Performance of Flight Helmets in Combination with the Stealth Cup and the Fully-Articulating Air Bladder System (FAABS)

Descriptive Note:

Interim rept. Jul-Aug 2010

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE

Report Date:

2013-04-01

Pagination or Media Count:

17.0

Abstract:

Noise attenuation performance measurements were conducted on the HGU-55P, HGU-68P, and HGU-84P flight helmets in combination with the Stealth Cup and the Fully-Articulating Air Bladder System FAABS, developed by SPEAR Labs. Measurements were also collected on the helmets most commonly used earcups and regular shims to facilitate a direct comparison among the same sample of subjects. Passive insertion loss was measured in accordance with ANSI S12.42 while passive noise attenuation was measured in accordance with ANSI S12.6. Four ear cups, including the Stealth Cup, were tested in combination with the HGU-55P helmet and FAABS. The Stealth Cup was also tested in combination with the HGU-68P and HGU-84P flight helmets. The Stealth Cup was an equal, if not better, performer in comparison to currently used earcups across all frequencies. The FAABS was also an equal performer when compared to the currently used shims.

Subject Categories:

  • Acoustics
  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE