To investigate the unsteady flow characteristics of the oscillating two-dimensional wing, an innovative mechanism to drive two-dimensional wing models was developed. The major design concepts of the system are: (1) quasi-harmonic pitching oscillation up to frequency of 8 Hz via three electric motors controlled by the personal computer; and (2) the mean-angles of attack, the amplitude and the frequencies can be changed automatically. The system is used for the flow visualization in a low wind tunnel to view the unsteady flow patterns around an oscillating two-dimensional wing model.
2次元翼模型加振装置の開発
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