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Research of High Speed Shaft System Using Air Foil Bearing

Article of Honda R&D Technical Review Vol.15 No.2


The demand for reliable, low maintenance, oil-free micro-gasturbine imposes significant demands on the bearing system. The air foil bearing provides low power loss, adequate damping for supercritical operation and long life with oil-free. In this application, foil bearings support a 9.2kg, multi-component rotor operating at 77 000rpm with a bending critical speed of approximately 42 500rpm. Stable and reliable operation over full speed range on shaft system rig and micro-gasturbine has been demonstrated.


(1) Shinmura, K., Yamaguchi, K., Kimura, H., Tsuzuki, S., Kato, T.: Research of Micro-gasturbine Generator, Honda R&D Technical Review, Vol. 15, No. 2, p. 7-16 (2003)
(2) Shinmura, K.: Micro-gasturbine Research at HONDA, Presented in 2003 ASME TURBO EXPO panel session (2003)
(3) Togo, S.: Gas Bearings design and manufacture, Kyoritsu Shuppan Co., Ltd., P. 195 (1984)
(4) Yamamoto, T., Ishida, Y.: Linear and Nonlinear Rotordynamics, Modern Treatment and Application, Koronasha (2001)

Author (organization or company)

Norio SHIMIZU(Wako Research Center)、Mitsuo MATSUSHIMA(Wako Research Center)、Ichiro ISHII(Wako Research Center)、Hitoshi IWADATE(Wako Research Center)、Hidehiko NAKATA(Wako Research Center)

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