Delayed Deceleration Approach Noise Impact and Modeling Validation

Jacqueline L. Huynh; Ara Mahseredjian; R. John Hansman

doi:10.2514/1.C036631

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Delayed Deceleration Approach Noise Impact and Modeling Validation

Journal article

Open access

Peer reviewed

Delayed Deceleration Approach Noise Impact and Modeling Validation

Jacqueline L. Huynh, Ara Mahseredjian and R. John Hansman

Journal of aircraft, Vol.59(4), pp.992-1004

07/01/2022

DOI: https://doi.org/10.2514/1.C036631

Handle:

https://hdl.handle.net/2376/124791

Appears in Aviation Sustainability Center (ASCENT)

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Abstract

Engineering, Aerospace

Science & Technology

Radar Data

Velocity Profiles

Airbus

Atmospheric Conditions

Indicated Airspeed

Boston's Logan Airport

Aircraft Configurations

Flight Profile

Aircraft Noise

Engineering

Technology

Transport Aircraft

A validation methodology and evaluation of delayed deceleration approach performance and noise-impact modeling using noise measurements and radar data are presented. Advanced procedures such as delayed deceleration approaches, where aircraft maintain higher speeds and therefore remain cleanly configured and at lower thrust levels for longer flight periods, can be used for airport noise abatement. Delayed deceleration approaches have been shown in modeling to offer noise reductions before the stabilization point compared to procedures that decelerate early. The delayed deceleration approach validation methodology is demonstrated through monitoring of operational radar data with varying velocity profiles from Boeing 737, Airbus A320, and Embraer E190 flights and comparing modeled sound exposure levels of these procedures with available ground-noise-monitor data at two major airports. Thrust from radar flights was modeled based on weight predicted from final approach speed and assumed configuration. When corrected for atmospheric conditions, modeled noise is shown to be consistent with noise-monitor readings under reasonable flap-deployment schedule assumptions during observed early, intermediate, and delayed deceleration approaches. In addition, delayed deceleration approaches correlated with monitor readings with lower noise levels of an average of 3-6 dB compared to early deceleration approaches across different aircraft types.

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Details

Title: Delayed Deceleration Approach Noise Impact and Modeling Validation
Creators: Jacqueline L. Huynh - University of California, Irvine
Ara Mahseredjian - MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA
R. John Hansman - MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Publication Details: Journal of aircraft, Vol.59(4), pp.992-1004
Academic Unit: Aviation Sustainability Center (ASCENT); Noise
Publisher: Amer Inst Aeronautics Astronautics
Number of pages: 13
Grants: 13-C-AJFF-MIT-050, Federal Aviation Administration (United States, Washington) - FAA
13-C-AJFF-MIT-073, Federal Aviation Administration (United States, Washington) - FAA
Grant note: 44 / Federal Aviation Administration (FAA) under Aviation Sustainability Centers Center of Excellence Project
Identifiers: 99900898127901842
Language: English
Resource Type: Journal article