Engine installation effects of four civil transport airplanes : Wallops Flight Facility study

Fleming, Gregg G.; Senzig, David A.; McCurdy, David A.; Roof, Christopher J.; Rapoza, Amanda S.; John A. Volpe National Transportation Systems Center (U.S.); Langley Research Center

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Engine installation effects of four civil transport airplanes : Wallops Flight Facility study

2003-10-31
By Fleming, Gregg G. ; Senzig, David A. ; McCurdy, David A. ; ...

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Creators:

Fleming, Gregg G. ; Senzig, David A. ; McCurdy, David A. ; Roof, Christopher J. ; Rapoza, Amanda S.

Fleming, Gregg G. ; Senzig, David A. ; McCurdy, David A. ; Roof, Christopher J. ; Rapoza, Amanda S. Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.) ; Langley Research Center

John A. Volpe National Transportation Systems Center (U.S.) ; Langley Research Center Less -
Corporate Contributors:

United States. National Aeronautics and Space Administration
Subject/TRT Terms:

[+]

Acoustic Directivity Acoustic Measuring Instruments Aircraft Exhaust Gases Aircraft Noise Algorithms Ambient Noise Ground Effects Installation Jet Engines Lateral Attenuation Sound Generation Sound Level Standards
Publication/ Report Number:

NASA/TM-2003-212433
Resource Type:

Research Paper
Geographical Coverage:

Virginia
Corporate Publisher:

United States. National Aeronautics and Space Administration
NTL Classification:

AGR-IMPACTS-Environment;NTL-AVIATION-Aviation Energy and Environment;NTL-ENERGY AND ENVIRONMENT-Aviation Energy and Environment;NTL-ENERGY AND ENVIRONMENT-Environment Impacts;
Abstract:

This report examines the effects of airplane geometrical configuration on the acoustic directivity characteristics and on the propagation of airplane noise. This effect of airplane geometry is referred to in this report as “engine installation effects.” Engine installation effects are one of the components of lateral attenuation. Lateral attenuation in the Federal Aviation Administration’s (FAA) Integrated Noise Model (INM) has been based on the methods described in the Society of Automotive Engineers’ (SAE) Aerospace Information Report (AIR) 1751. Released in 1981, SAE-AIR-1751 is founded on data measured in the 1960s and 1970s. The Boeing B-727 airplane, which has an engine location not used on more modern large civil transports, dominated these measurements. Long-term measurements conducted with airport noise monitoring equipment have shown that the lateral attenuation algorithms in SAE-AIR-1751 tend to predict too much attenuation for modern airplanes.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:966a43f83f31c445e18a8256148b1ecfd643157ffe1060bf251bf1bd01d2abb1
Download URL:

https://rosap.ntl.bts.gov/view/dot/9817/dot_9817_DS1.pdf
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Engine installation effects of four civil transport airplanes : Wallops Flight Facility study

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