Accession Number:

AD0694947

Title:

IN-FLIGHT MANIKIN RECORDINGS FOR EVALUATING THE COMMUNICATION EFFECTIVENESS OF FLIGHT HELMETS,

Descriptive Note:

Corporate Author:

NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA

Personal Author(s):

• Williams,Carl E.
• Forstall,John R.
• Greene,James W.

Report Date:

1969-07-23

Pagination or Media Count:

24.0

Abstract:

An exploratory study has been conducted to determine the feasibility of obtaining and using in-flight manikin recordings to evaluate flight helmets with respect to speech intelligibility. Intelligibility test materials were transmitted to six airborne subjects and a manikin as each was fitted with different flight helmets. Similar test materials were presented to the same six subjects in a simulated flight situation. Recordings obtained via the airborne manikin were subsequently placed back in the laboratory to the six subjects and two groups of ten listeners each. Author

Descriptors:

• (*PILOTS
• HELMETS)
• (*EARPHONES
• ACOUSTIC PROPERTIES)
• (*VOICE COMMUNICATIONS
• INTELLIGIBILITY)
• COMMUNICATION AND RADIO SYSTEMS
• NOISE
• ATTENUATION
• HEARING
• PROTECTION

Subject Categories:

• Electrical and Electronic Equipment
• Protective Equipment
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE