Noise reduction technologies for aircraft landing gear-A bibliographic review

K Zhao, P Okolo, E Neri, P Chen, J Kennedy… - Progress in Aerospace …, 2020 - Elsevier
As a main contributor to aircraft noise at approach to landing, landing gear noise is currently
a major research interest amongst aeronautical engineers and aeroacoustic researchers …

Aerodynamic noise reduction using dual-jet planar air curtains

K Zhao, S Alimohammadi, PN Okolo, J Kennedy… - Journal of Sound and …, 2018 - Elsevier
In this paper, dual-jet planar air curtains are demonstrated to be able to successfully remove
aerodynamic noise radiated from tandem rods in a crossflow. Single-jet air curtains have …

Flow control and passive low noise technologies for landing gear noise reduction

GJ Bennett, J Lai, G O'Brien, D Ragni… - 28th AIAA/CEAS …, 2022 - arc.aiaa.org
This paper examines the use of both flow control and passive low noise technologies to
reduce the aerodynamic noise radiated from a modified LAGOON landing gear, as tested in …

Numerical assessment of flow control capabilities of three dimensional woven wire mesh screens

PN Okolo, K Zhao, J Kennedy, GJ Bennett - European Journal of …, 2019 - Elsevier
Abstract Computational Fluid Dynamics (CFD) simulations of low turbulence fluid flow
through three dimensional (3D) wire screens have been carried out within this research to …

Cavity resonance suppression using fluidic spoilers

GJ Bennett, PN Okolo, K Zhao, J Philo, Y Guan… - AIAA Journal, 2019 - arc.aiaa.org
This paper examines experimentally the use of a fluidic spoiler to suppress the resonance
within a partially closed cylindrical cavity subject to a grazing flow. The relative movement of …

Suppression of aerodynamic noise using dual-jet air curtains combined with perforated fairings

K Zhao, Y Liang, PN Okolo, Y Wang, Z Wu, GJ Bennett - Applied Acoustics, 2020 - Elsevier
The dual-jet air curtain is a novel technology that, acting as a fluidic spoiler, can not only
reduce aerodynamic noise but also, compared with a single-jet air curtain, can be designed …

An experimental characterization on the acoustic performance of forward/rearward retraction of a nose landing gear

Y Liang, K Zhao, Y Chen, L Zhang… - International Journal of …, 2019 - Wiley Online Library
The modern undercarriage system of a large aircraft normally requires the landing gear to
be retractable. The nose landing gear, installed in the front of the fuselage, is retracted either …

An experimental characterization of the interaction between two tandem planar jets in a crossflow

K Zhao, PN Okolo, Y Wang… - Journal of Fluids …, 2018 - asmedigitalcollection.asme.org
This study reports an experimental investigation of two planar jets in a crossflow in a tandem
arrangement. Tests were conducted in an open-jet wind tunnel facility using two …

[HTML][HTML] Use of dual planar jets for the reduction of flow-induced noise

K Zhao, X Yang, PN Okolo, Z Wu, GJ Bennett - AIP Advances, 2017 - pubs.aip.org
The planar jet has been proposed to reduce the flow-induced noise. However, the self-noise
emission from a single planar jet is a limiting factor on the performance based characteristics …

Numerical study of aerodynamic noise behaviors for a vertically-installed flat strut behind an asymmetrical airfoil

XF Niu, Y Li, XN Wang - European Journal of Mechanics-B/Fluids, 2021 - Elsevier
The aerodynamic noise generated from a cooling fan and its support frame is one of the
major noise sources of many engineering machines, such as automobile engines and …