UHBR Engine and Ducted Propulsor Noise Reduction Technology for Future Aircraft

A special issue of Aerospace (ISSN 2226-4310). This special issue belongs to the section "Aeronautics".

Deadline for manuscript submissions: 6 June 2024 | Viewed by 757

Special Issue Editors


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Guest Editor
School of Power and Energy, Northwestern Polytechnical University, Xi’an 710129, China
Interests: turbomachinery aeroacoustics; noise prediction; noise control; turbomachinery aerothermal dynamics

E-Mail Website
Guest Editor
School of Power and Energy, Northwestern Polytechnical University, Xi’an 710129, China
Interests: aeroacoustics; bionic noise reduction; noise prediction; propeller noise; noise measurement
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ultra-high bypass ratio (UHBR) engines and ducted propulsors are indispensable power devices for future aircraft. For UHBR engines and ducted propulsors, the forward and afterward radiating fan noise is one of the most important noise sources. Three primary noise sources of the fan are the rotor-stator interaction tonal noise, turbulence broadband noise and shock noise. Advanced noise reduction technology for fans could contribute significantly to future ultra-quiet engines and aircraft. In order to further reveal noise generation mechanisms and reduce noise pollution, it is urgent to conduct systemic research and develop advanced noise reduction technologies for UHBR engines and ducted propulsors.

Potential topics include, but are not limited to:

  • The noise characteristics of a ducted fan;
  • Fan noise prediction;
  • Fan noise reduction;
  • The advanced computational aeroacoustics method;
  • The advanced computational aerodynamics method;
  • The advanced noise measurement method.

Prof. Dr. Weiyang Qiao
Dr. Weijie Chen
Guest Editors

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Keywords

  • UHBR engines
  • ducted fan
  • aeroacoustics
  • noise prediction
  • noise reduction
  • noise measurement

Published Papers (1 paper)

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Review

28 pages, 29687 KiB  
Review
Serrations as a Passive Solution for Turbomachinery Noise Reduction
by Andrei-George Totu, Grigore Cican and Daniel-Eugeniu Crunțeanu
Aerospace 2024, 11(4), 292; https://doi.org/10.3390/aerospace11040292 - 09 Apr 2024
Viewed by 550
Abstract
Aircraft engine noise has become a significant concern for air operators to address. Engineering strategies have resulted in the development of easily applicable solutions, known as “passive solutions”, that do not necessitate real-time control. These solutions include the incorporation of corrugations or cutouts [...] Read more.
Aircraft engine noise has become a significant concern for air operators to address. Engineering strategies have resulted in the development of easily applicable solutions, known as “passive solutions”, that do not necessitate real-time control. These solutions include the incorporation of corrugations or cutouts at critical locations on the engine’s aerodynamic surfaces. Realistic solutions, whether approached numerically or tested at small scales, as well as computational models, have been found to closely match experimentally observed behaviors, both in 2D and 3D scenarios. The identified geometries serve as promising starting points for devising combined concepts that may offer even better performance under specific flow conditions. Full article
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