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- W2020239599 abstract "This paper describes a turbo test rig to test the compressor of a palmtop gas turbine generator at low temperature (<100 °C). Impellers are 10 mm in diameter and have three-dimensional blades machined using a five-axis NC milling machine. Hydroinertia bearings are employed in both radial and axial directions. The performance of the compressor was measured at 50% (435 000 rpm) and 60% (530 000 rpm) of the rated rotational speed (870 000 rpm) by driving a turbine using compressed air at room temperature. The measured pressure ratio is lower than the predicted value. This could be mainly because impeller tip clearance was larger than the designed value. The measured adiabatic efficiency is unrealistically high due to heat dissipation from compressed air. During acceleration toward the rated rotational speed, a shaft crashed to the bearing at 566 000 rpm due to whirl. At that time, the whirl ratio was 8." @default.
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- W2020239599 date "2004-08-11" @default.
- W2020239599 modified "2023-10-16" @default.
- W2020239599 title "Turbo test rig with hydroinertia air bearings for a palmtop gas turbine" @default.
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- W2020239599 doi "https://doi.org/10.1088/0960-1317/14/11/003" @default.
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