@inproceedings{oai:jaxa.repo.nii.ac.jp:00004923,
 author = {横川, 譲 and 今村, 太郎 and 山本, 一臣 and 浦, 弘樹 and 小林, 宙 and 内田, 洋 and Yokokawa, Yuzuru and Imamura, Taro and Yamamoto, Kazuomi and Ura, Hiroki and Kobayashi, Hiroshi and Uchida, Hiroshi},
 book = {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, JAXA Special Publication: Proceedings fo 41st Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2009},
 month = {Feb},
 note = {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, 18 June-19 June, 2009, Japan Aerospace Exploration Agency, A 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., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0064672025, レポート番号: JAXA-SP-09-011},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {JAXA 主脚騒音模型の遠方場特性},
 volume = {JAXA-SP-09-011},
 year = {2010}
}