2207 超小型遠心圧縮機の要素試作に関する研究  [in Japanese] Study on prototyping of ultra-micro centrifugal compressor components  [in Japanese]

In order to establish the design methodology of ultra micro centrifugal compressor, which is the most important component of ultra micro gas turbine unit, a 10 times of the final target model size was designed, prototyped and tested. The problems to be solved for downsizing were examined and 2-dimensional impeller was chosen as the first model due to its productivity. The conventional 1-dimensional prediction method was used for the impeller design. The prototyped compressor was driven by using a turbocharger and the performance characteristics were measured and compared with the prediction. The stress and the vibration analysis in the operating condition were also performed.