Dynamic Response of an Elastic Propeller to a Non-Uniform Inflow.
PENNSYLVANIA STATE UNIV UNIVERSITY PARK ORDNANCE RESEARCH LAB
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An important problem in both naval architecture and aircraft engineering concerns the vibrations and noise generated by the propulsion system. In marine applications, the dominant source of vibrations is the propeller. Due to its response to a spatially and temporally nonuniform velocity field the propeller exerts time-dependent axial and side forces, as well as fluctuating torques and moments upon the hull of a ship. The necessity for minimizing unsteady forces and ship vibration levels, has led to the adoption of propeller blades with a high degree of skew. The dynamic response of these blades may either alleviate or worsen the net forces and couples. This is the reason for the study. Author Modified Abstract
- Marine Engineering