JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
64672025.pdf2.36 MB
titleJAXA 主脚騒音模型の遠方場特性
Other TitleFar-field Characteristics of JAXA Main Landing Gear Noise Research Model
Author(jpn)横川, 譲; 今村, 太郎; 山本, 一臣; 浦, 弘樹; 小林, 宙; 内田, 洋
Author(eng)Yokokawa, Yuzuru; Imamura, Taro; Yamamoto, Kazuomi; Ura, Hiroki; Kobayashi, Hiroshi; Uchida, Hiroshi
Author Affiliation(jpn)宇宙航空研究開発機構航空プログラムグループ; 宇宙航空研究開発機構航空プログラムグループ; 宇宙航空研究開発機構航空プログラムグループ; 宇宙航空研究開発機構研究開発本部; 宇宙航空研究開発機構研究開発本部; IHIエアロスペースエンジニアリング
Author Affiliation(eng)Aviation Program Group, Japan Aerospace Exploration Agency (APG)(JAXA); Aviation Program Group, Japan Aerospace Exploration Agency (APG)(JAXA); Aviation Program Group, Japan Aerospace Exploration Agency (APG)(JAXA); Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); IHI AEROSPACE ENGINEERING
Issue Date2010-02-26
PublisherJapan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構
Publication titleJAXA special publication: Proceedings fo 41st Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2009
宇宙航空研究開発機構特別資料: 第41回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2009論文集
VolumeJAXA-SP-09-011
Publication date2010-02-26
Languagejpn
eng
AbstractA far-field characteristic of a landing gear noise is assessed through lowspeed wind tunnel test in large scale anechoic facility of Railway Technical Research Institute. To understand landing gear noise generation of regional jet airliner during the approach phase, 40% of two-wheel type main landing gear scale model which is called LEG (Landing gear noise Evaluation Geometry) model is installed in open-jet test section. The model is designed in detail in order to reproduce flow field similar to that of around an actual landing gear, which is equipped with small instruments as well as large components such as a tire, a strut, a door and a brace. As a result, spectrum of sound pressure revel for fully dressed model configuration was obtained. The spectrum roughly corresponds to the empirical data given by EUDS database. Reynolds number effect and directivity in noise generation appeared at certain flow condition. In addition, the contribution and behavior of each component of the landing gear model to the total noise level was also assessed. The tire, the door and the brace were comparatively large noise source. It was shown that the spectrum of fully dressed configuration was reproduced by summation of the spectrum of each component, but some narrow band peaks were appeared depending on the model configuration.
DescriptionOriginal contains color illustrations
Meeting Information: 18 June-19 June, 2009, Japan Aerospace Exploration Agency
形態: カラー図版あり
会議情報: 平成21年6月18-19日. 宇宙航空研究開発機構調布航空宇宙センター
Document TypeConference Paper
JAXA Category特別資料
ISSN1349-113X
NCIDAA11609371
SHI-NOAA0064672025
Report NoJAXA-SP-09-011
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/14802


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