Analysis of Rotor Noise During Ramp Collective Pitch Increase by CFD Method

被引：0
|
作者：
Chen, Xi [1 ]
Zhang, Kai [1 ]
Zhao, Qijun [1 ]
Wang, Weiqi [1 ]
Chen, Siyu [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China
来源：
PROCEEDINGS OF THE 2021 ASIA-PACIFIC INTERNATIONAL SYMPOSIUM ON AEROSPACE TECHNOLOGY (APISAT 2021), VOL 1 | 2023年 / 912卷
基金：
中国国家自然科学基金;
关键词：
Aeroacoustic characteristic; Aperiodic; Rotor; Helicopter; Numerical method; HELICOPTER; PREDICTION; EQUATION; EULER;
D O I：
10.1007/978-981-19-2689-1_40
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Based on FW-H equations and the CFD method, aeroacoustic characteristics of rotor during collective pitch aperiodic variation are calculated and analyzed. At first, a set of analysis method for aperiodic rotor aeroacoustic characteristics is developed. The aerodynamic and aeroacoustic characteristics of BO-105 rotor in hover and NACA rotor in a ramp increase of collective pitch are calculated, and the employed numerical analysis method is validated through comparisons with experimental data. Then, the aeroacoustic characteristics of the NACA rotor during an oscillating collective pitch is analyzed, and the sound pressure peak at different collective pitch is discussed in detail, and some conclusions are obtained.
引用
收藏
页码：513 / 526
页数：14
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