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contributor authorYang, Tianxiao
contributor authorYu, Wenjun
contributor authorLiang, Dong
contributor authorHe, Xiang
contributor authorZhao, Zhenguo
date accessioned2022-05-08T08:56:55Z
date available2022-05-08T08:56:55Z
date copyright3/2/2022 12:00:00 AM
date issued2022
identifier issn0889-504X
identifier otherturbo_144_7_071011.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4284543
description abstractIn this article, a novel contra-rotating open rotor (CROR) noise reduction methodology based on the anhedral blade tip applied to the front blade is developed. Results indicate that anhedral blade tip can provide noise reduction over 60 deg. polar angle range in both upstream and downstream areas at takeoff condition. The noise reduction becomes more significant as the lean angle of anhedral blade tip increases, and the maximum noise reduction is over 4 dB. Further analysis shows that anhedral blade tip decreases the strength and size of blade tip vortex shed from the front blade and reduces its interaction with the rear rotor, which decreases the fluctuation of loading acting on the rear rotor and its loading noise. Furthermore, the anhedral blade tip does not have a significant effect on the aerodynamic performance of CROR at cruise.
publisherThe American Society of Mechanical Engineers (ASME)
titleA Contra-Rotating Open Rotor Noise Reduction Methodology by Using Anhedral Blade Tip
typeJournal Paper
journal volume144
journal issue7
journal titleJournal of Turbomachinery
identifier doi10.1115/1.4053384
journal fristpage71011-1
journal lastpage71011-11
page11
treeJournal of Turbomachinery:;2022:;volume( 144 ):;issue: 007
contenttypeFulltext


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