Experimental Spindle Torque and Open-Water Performance of Two Skewed Controllable-Pitch Propellers

Abstract

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Adaptive pitch control of full-scale ship composite propeller using shape memory alloy to enhance propulsive efficiency in off-design conditions

“…When the engine or the bearings are designed to keep a minimum rotation rate of the shaft, CPP is again used to facilitate the ship to manoeuvre at a lower thrust. The hub of a CPP is more complicated, more expensive to manufacture and its hub diameter is also larger than that of a fixed pitch propeller, which reduces the efficiency (Boswell et al, 1975). Supercavitating propellers are used for highspeed applications, when significant cavitation cannot be avoided.…”

Removal Notice: Simulation of dynamical loads for large controllable pitch propellers ground tests

“…2 In the past, there have been a few publications about CPPs' experiments in water. In 1978, Boswell 3,4 And in 2013, I Funeno et al 1 measured and computed the blade spindle torque of CPPs in open water. Water test is important and necessary, but due to its difficulty and high costs, ground tests are more widely used.…”