CJR propulsion design and manufacture propellers and stern for luxury yachts. The current propeller design method assumes a uniform flow into the propeller. This assumption has significant errors, as the flow is affected by stern gear in front of the propeller in the flow as well as general hull performance. Propeller performance is currently calculated using an in house program based on a vortex lattice method (Szantyr, 1993). This investigation forms part of a project aiming to improve the prediction of the wake into the propeller in order to improve propeller design. This investigation presents a case study into the effect of the effect of the P bracket design on the propeller performance.
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