並列タイトル等Some Considerations on Aeroelastic Instabilities Caused by Coupling between Propeller-Type Rotor and Its Supporting Structure
タイトル（掲載誌）航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-804
一般注記Aeroelastic instabilities caused by the coupling between a rigid rotor and a flexible tower of a horizontal axis wind turbine are considered in this paper. Equations of motion having periodic coefficients are derived with respect to the fixed frame of reference as well as the frame of reference moving with the rotor by assuming an aerodynamic force predicted by the quasi-steady blade element theory. The same equations can be applied to rotors of both downwind and upwind types. It is shown that the equations of motion with respect to an appropriate frame of reference have constant coefficients in cases where either the rotor or the tower stiffness is isotropic. Possible instabilities only in these cases are studied with the help of Routh’s criterion. Three kinds of instabilities, that is, the whirl flutter and the divergences of the first and second kinds, are predicted. The last of these is rather new.
資料番号: NALTR0804000
レポート番号: NAL TR-804
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ