NOISE ENVIRONS AND HELMET PERFORMANCE FOR THE P-1127 V/STOL AIRCRAFT.
Final rept. Oct 67-Mar 68,
AEROSPACE MEDICAL RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
The purpose of the evaluation was 1 to measure the acoustic noise environment in the cockpit of the United Kingdom Hawker Siddeley P-1127 VSTOL aircraft that would serve as an acoustic guideline for cockpit noise levels of aircraft being contemplated or under construction, and 2 to determine the acoustic attenuation of various Air Force flight helmets in the inventory or being contemplated for Air Force inventory items. Cockpit sound pressure levels in the P-1127 VSTOL aircraft at various engine rpm settings were measured. The cockpit noise environment at maximum engine rpm was reproduced in the laboratory and used to obtain objective attenuation data for three Air Force flight helmetliner configurations. Measurement of real-ear attenuation at threshold were also accomplished on the helmetliner configurations. Author
- Protective Equipment