B-20 水潤滑軸受を用いたマイクロガスタービンの軸振動(開発・性能I,一般講演)

概要

論文の詳細を見る
We are developing a prototype of a micro gas turbine that uses water-lubricated bearings to reduce energy loss. A compressor and the turbine are mounted on an overhanging part of a generator. We measured the rotor vibration of the prototype and developed a method for predicting rotor vibration. The vibration amplitude of the prototype was less than 10% of the gap length in a rotor supporting part. The calculated and measured natural frequencies coincided well not only at critical speeds but also at other rotation speeds. We developed a method for predicting the vibration amplitude at the design speed by measuring the vibration at low rotation speeds and extrapolating those measurements for higher speeds. The prediction error was less than 10% of the gap length in rotor supporting parts.
公益社団法人日本ガスタービン学会の論文
2006-10-01