動吸振器によるフラッタ抑止の効果について

抄録

The wing flutter phenomenon of the modern airplanes is mainly of torsion mode. The rotation dynamic absorber, which is attached to the elastic axis of the wing, can be considered to have a good effect for the suppression of the wing flutter. In this paper the problem is treated as three degree of freedom system, consisting of the bending of the wing and its torsion and the rotation of the dynamic absorber. The analysis shows the method to determine the following three values; the optimum natural frequency of the dynamic absorber, its optimum structural damping and the corresponding maximum flutter velocity. From these results, it is also explained that the increase of the flutter velocity due to the rotation dynamic absorber is approximately proportional to the square root the moment of inertia of the absorber.