Modeling of Delayed Deceleration Approaches for Community Noise Reduction

The modeling, assessment, and flight demonstration of delayed deceleration approach procedures for airport community noise reduction are presented. In conventional approach procedures, aircraft decelerate and therefore configure early, resulting in the need to operate at above idle thrust levels to maintain the final approach speed before touchdown. In delayed deceleration approaches, aircraft maintain higher speeds and thus remain cleanly configured and at lower thrust levels for longer durations before touching down, thus reducing configuration and engine noise. The community noise impacts of several delayed deceleration approach concepts are presented for different aircraft. A modeling framework for determining deceleration rates of various aircraft, and relative magnitude of airframe component noise and engine noise, is presented. The models indicate for representative narrow and wide-body aircraft that delayed deceleration approach procedures can result in 4–8 dB reductions in noise under the flight track in regions far from the final approach stabilization point compared with standard approach procedures. The delayed deceleration approach procedure was tested for flyability during the 2019 ecoDemonstrator program. Modeled results of the demonstrated procedure also indicate potential for significant noise and fuel burn reductions if implemented. Finally, operational implications of implementing delayed deceleration approaches are discussed.

• Record URL:
  https://doi.org/10.2514/1.D0237
• Supplemental Notes:
  • Copyright © 2021 by Jacqueline L. Thomas and R. John Hansman. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. All requests for copying and permission to reprint should be submitted to CCC at www.copyright.com; employ the eISSN 2380-9450 to initiate your request. See also AIAA Rights and Permissions www.aiaa.org/randp.
• Authors:
  • Thomas, Jacqueline L
  • 0000-0001-9999-0953
  • Hansman, R. John
• Publication Date: 2021-7

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 127-136
• Serial:
  • Journal of Air Transportation
  • Volume: 29
  • Issue Number: 3
  • Publisher: American Institute of Aeronautics and Astronautics (AIAA)
  • EISSN: 2380-9450
  • Serial URL: https://arc.aiaa.org/journal/jat

Subject/Index Terms

• TRT Terms: Aircraft; Approach control; Deceleration; Noise control
• Subject Areas: Aviation; Environment; Operations and Traffic Management;

Filing Info

• Accession Number: 01777011
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 23 2021 3:23PM