A-17 超小型多段圧縮機の要素試作と実験(空力III,一般講演)

概要

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A two-stage centrifugal compression system was designed and fabricated. The impellers with the outer diameters of 40 mm, which were called ten times model of the final target impeller of 4 mm, were designed and tested with and without a guide vane of the return channel and the effects of the vaneless and vaned diffusers were also examined. Though the designed rotational speed of 220,000 rpm was required for a single-stage centrifugal compressor, the speed for the two-stage centrifugal compressor was estimated at 150,000 rpm. The performance tests were carried out at 100,000 rpm. The result showed that the performance characteristics with the guide vane exhibited the superior characteristics. However, the difference between the vaned and vaneless diffusers with the guide vane did not appear in the results. At the next step, the five times model was designed and fabricated. The performance tests were carried out at 120,000 rpm.
公益社団法人日本ガスタービン学会の論文
2006-10-01