Accession Number:

AD0469657

Title:

C-141A INTERIOR ACOUSTICAL NOISE MEASUREMENTS - A/C NO. 6004 (AF 612778),

Descriptive Note:

Corporate Author:

LOCKHEED-GEORGIA CO MARIETTA

Personal Author(s):

• Gibson, J. S.

Report Date:

1965-08-09

Pagination or Media Count:

1.0

Abstract:

This report presents the measured acoustical noise environment for the interior of the C-141A aircraft and a description of the production soundproofing treatment as required by MIL-A8806. The measured acoustical noise environment for the required flight conditions is well below specification limits in most octave bands. There are a few insignificant instances where the measured noise levels exceed the specification by one or two decibels. Author

Descriptors:

• AIRCRAFT NOISE
• TRANSPORT AIRCRAFT
• NOISE ANALYZERS
• ACOUSTIC INSULATION
• CONTROL
• ENVIRONMENTAL TESTS
• FREQUENCY
• ACOUSTIC EQUIPMENT
• MEASUREMENT
• ELECTROACOUSTIC TRANSDUCERS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE