[C320-list] High pitch whining (singing) noise from shaft, above 2800
Randy Dewhirst
redewhirst at gmail.com
Wed Jun 21 13:13:58 PDT 2017
The phenomenon is called prop sing. It occurs when the excitation
frequency aligns with a shedding frequency. It is cured by chamfering
the trailing edge of the blade.
More information about the C320-list
mailing list