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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Rotor–stator interaction ： ウィキペディア英語版 Rotor–stator interaction An important issue for the aeronautical industry is the reduction of aircraft noise. The rotor–stator interaction is a predominant part of the noise emission. We will present an introduction to these interaction theory, whose applications are numerous. For example, the conception of air-conditioning ventilators requires a full understanding of this interaction. ==Noise emission of a rotor–stator mechanism== A rotor wake induces on the downstream stator blades a fluctuating vane loading, which is directly linked to the noise emission. We consider a B blades rotor (at a rotation speed of $\backslash Omega$) and a V blades stator, in a unique rotor–stator configuration. The source frequencies are multiples of $B\; \backslash Omega$, that is to say $mB\; \backslash Omega$. For the moment we don’t have access to the source levels $F\_$. The noise frequencies are also $mB\; \backslash Omega$, not depending on the number of blades of the stator. Nevertheless, this number V has a predominant role in the noise levels ($P\_$) and directivity, as it will be discussed later. ''Example'' ''For an airplane air-conditioning ventilator, reasonable data are :'' ''$B=13$ and $\backslash Omega\; =\; 12000$ rnd/min'' ''The blade passing frequency is 2600 Hz, so we only have to include the first two multiples (2600 Hz and 5200 Hz), because of the human ear high-sensibility limit. We have to study the frequencies m=1 and m=2.'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rotor–stator interaction」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.