5.6.4 The propeller design basis
The term ‘propeller d basis’ refers to the power, rotational speed and ship speed that are chosen to act as the basis for the design of the principal propeller geometric features. This is an extremely important matter even for the controllable pitch propellers, since in this latter case the design helical sections will only be absolutely correct for one pitch setting. This discussion, however, will largely concentrate on the fixed pitch propeller since for this type of propeller the correct choice of the design basis is absolutely critical to the performance of ship.
The selection of the design basis starts with a consideration of the mission profile for the vessel. Each vessel has a characteristic mission profile ...
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