Accession Number:

AD0403730

Title:

NOISE CONTROL FOR AIRCRAFT ENGINE TEST CELLS AND GROUND RUN-UP SUPPRESSORS. VOLUME 1: MEASUREMENT AND ANALYSIS OF ACOUSTICAL PERFORMANCE

Descriptive Note:

Final rept.

Corporate Author:

BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA

Personal Author(s):

• Doelling, Norman
• Bolt, Richard H.

Report Date:

1961-11-01

Pagination or Media Count:

109.0

Abstract:

This volume is the first in a series of three volumes AD-403 701 and AD-403 712 concerned with the physical aspects of noise control in aircraft engine test cells and ground run-up suppressors. This volume presents recommended procedures for the measurement of noise control effectiveness. Three classes of measurement procedures are described. The first class is concerned with the description of the acoustical effectiveness of a facility as a whole. Such descriptions may be used to compare facilities with one another or to determine if a facility has met a given criterion. The second class of measurements is used to determine the most economical way of improving the noise control design of an existing facility. The third class of measurements is used to describe the acoustical effectiveness of individual noise control components.

Descriptors:

• *TURBOJET ENGINES
• *JET ENGINE NOISE
• GROUND LEVEL
• DAMPING

Subject Categories:

• Jet and Gas Turbine Engines
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE