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Far Term Noise Reduction Roadmap for the NASA D8 and Single-Aisle Tube-And-Wing Aircraft ConceptsA portfolio of noise reduction technologies is applied to two advanced single-aisle class vehicle concepts in order to evaluate the prospects for these aircraft to meet the NASA Far Term noise goals, beyond 2035. TheNASAD8 (ND8) aircraft is an unconventional configuration with boundary-layer ingesting engines mounted in the aft dorsal location. The 160-passenger tube-and-wing (TW160) aircraft is a conventional configuration with podded engines located under the wing, which represents an incremental evolution of current design philosophies. The noise reduction technologies were chosen to be compatible with each aircraft’s specific configuration requirements. The acoustic effects were predicted based on experimental and numerical studies, andwere incorporated into the prediction of total system noise usingNASA’s research-level Aircraft NOise Prediction Program (ANOPP-Research). Results suggest that the unfavorable Propulsion Airframe Aeroacoustic (PAA) effects of the two aircraft considered here significantly limit their prospects of meeting NASA’s Far Term noise goal, and that further development of the technology portfolio is key to ensuring future success in addressing the noise challenges for single-aisle class vehicles.

Document ID
20200002464
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Clark, Ian A.
(NASA Langley Research Center Hampton, VA, United States)
Thomas, Russell H.
(NASA Langley Research Center Hampton, VA, United States)
Guo, Yueping
(NEAT Consulting Seal Beach, CA, United States)
Date Acquired
April 14, 2020
Publication Date
May 20, 2019
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NF1676L-31399
Report Number: NF1676L-31399
Meeting Information
Meeting: 2019 AIAA Aeroacoustics Conference
Location: Delft
Country: Netherlands
Start Date: May 20, 2019
End Date: May 24, 2019
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
WBS: 081876.02.07.03.01.05
Distribution Limits
Public
Copyright
Public Use Permitted.
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