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本文介绍了BF-1-1及BF-1-2两个转子在两种不同叶尖间隙(δ_1=1.2mm及δ_2=0.5mm)下叶片失速颤振的特殊发声现象。发声频率为275～285Hz,文中对实验结果作了初步的理论分析。
In this paper, the special sounding phenomenon of blade stall flutter under two different tip clearances (δ_1 = 1.2mm and δ_2 = 0.5mm) is introduced for BF-1-1 and BF-1-2 rotors. Vocal frequency of 275 ~ 285Hz, the text of the experimental results made a preliminary theoretical analysis.