Commercial Aircraft Noise Definition - L-1011 Tristar. Volume IV-Program Design Specification.

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Abstract:

Calculation procedures to describe airplane noise during takeoff and approach have been programmed for batch operation on a large digital computer. Three routines are included. The first normalizes far-field noise spectra to reference conditions and then determines spectra at various distances from the airplane, for airport elevations between sea level and 6000 feet and ambient temperatures between 30F and 100F. Overall sound pressure levels, A-weighted noise levels, perceived noise levels, and effective perceived noise levels are calculated. The second routine uses aerodynamic and engine thrust data to produce takeoff and approach flight path description. Volume 4 describes the computer program and gives instructions for its operation.

Author(s):
Shapiro, Nathan
Author Organization(s):
LOCKHEED-CALIFORNIA CO BURBANK
Descriptive Note:
Final rept. Jun 73-Sep 74,
Supplementary Note:
See also Volume 3, AD-A012 373 and Volume 5, AD-A012 375.
Pagination:
0126

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
LR-26075-Vol-4, FAA-EQ-73-6-Vol-4
Contract/Grant Number(s):
DOT-FA73WA-3300
Monitor Series:
73-6-Vol-4
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management
Communities of Interest:
Air Platforms
Descriptor(s):
*COMMERCIAL AIRCRAFT, *JET TRANSPORT AIRCRAFT, *JET AIRCRAFT NOISE, COMPUTER PROGRAMMING, TAKEOFF, ACOUSTIC ATTENUATION, ACOUSTIC SIGNATURES, NOISE POLLUTION, AIRCRAFT LANDINGS, AIRCRAFT NOISE, JET ENGINE NOISE, AERODYNAMIC NOISE
Field(s)/Group(s):
Civilian Aircraft, Acoustics
Keyword(s):
L 1011 aircraft, *Noise levels, DOT 4DZ DA, DOT 5B
Report Date:
1974 Sep 01