차세대 블레이드(NRSB-1M/2M)의 마하 스케일 성능시험
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This paper describes the performance test procedures and results of NRSB-1M and NRSB-2M. Not only aerodynamic performance test but also sound measurement test were performed for the small-scaled blades in the ground. Total thrusts and torques of the rotor were measured using rotating balance for aerodynamic performance test. Sound pressure levels were measured using microphone in 1.640 distance for sound measurement test. Non-dimensionalized test data are compared and analyzed Consequently, It was confirmed that NRSB-2 was better than NRSB-1.