Vibration Tests on Harbour Personnel Boat.
AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)
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Excessive propeller shaft bearing wear has occurred on a series of 10 metre harbour personnel boats constructed for the Royal Australian Navy. An investigation of the problem revealed that the wear was caused by a high-order whirling mode of the shaft excited by propeller-hull interaction. It was not practicable to alter this whirling vibration significantly, but the wear rate was reduced to an acceptable level by changing the bearing materials. Author
- Marine Engineering