Numerical simulation technique for aeroelastic response using inverse Fourier transform
| Autor: | Ueda, Tetsuhiko, Saitoh, Kenichi |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | 宇宙航空研究開発機構特別資料 = JAXA Special Publication: Proceedings of the First International Symposium on Flutter and its Application. :421-430 |
| ISSN: | 1349-113X |
| Popis: | First International Symposium on Flutter and its Application (May 15-17, 2016. Mielparque-tokyo), Minato-ku, Tokyo, Japan This paper reports a new simulation technique for aeroelastic systems which respond to external forces due to spatially distributed atmospheric turbulence. If the system equation includes the effects of unsteady aerodynamics which is analytically derived in the frequency domain, then the Inverse Discrete Fourier Transform (IDFT) can be utilized for simulating the response in the time domain. The response against the vertical gust is first calculated through a transfer function given in the frequency domain and then converted whole to in the time domain. The objective of the present study is to provide the system transfer function including the effects of unsteady aerodynamic characteristics and to simulate the response to external forces come from the random or spatially frozen gust. The technique may be utilized to establish the control law of active control device coping with discrete and/or random turbulence. The method can also be utilized to calculate mathematical time history data for evaluating the control performance against the realistic gust. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA1630046045 レポート番号: JAXA-SP-16-008E |
| Databáze: | OpenAIRE |
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