Rotordynamic forces acting on a centrifugal open impeller in whirling motion by using active magnetic bearingN. Nagao, M. Eguchi, M. Uchiumi and Y. YoshidaEUCASS Proceedings Series – Advances in AeroSpace Sciences, 4 (2013) 445-456DOI: https://doi.org/10.1051/eucass/201304445