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13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference)
Interior noise and vibration can be a serious problem in military propeller aircraft. Noise levels often exceed 100 dB, and typical vibration levels can be hazardous to sensitive cargo. This noise and vibration is dominated by the propeller blade-pass frequency and its low-order harmonics. It is generally accepted that propeller synchrophasing is a way of minimising this noise and vibration, however synchrophasing has only achieved limited success in practice. It is thought that the reasons fordoi:10.2514/6.2007-3584 fatcat:jl7clk3ffjeljgt7ty2rfe3s3m