Two British triple screw cross-channel ferries have been equipped with Escher Wyss controllable pitch propellers of the fully feathering type on the center shaft. Due to the highly skewed blades the fully feathering position is achieved by gradual pitch increase rather than by the hitherto applied pitch reduction. The performance of the system was predicted on the basis of the model tests and monitored during prototype trials, mainly with regard to spindle torque characteristics. The results of the model and full scales measurements are reported and analyzed. In addition, the propeller blade forces are determined analytically for the fully feathered condition, applying finite aspect ratio wing theory and advanced viscous flow foil section analysis.
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SNAME Propellers '88 Symposium
September 20–21, 1988
Virginia Beach, Virginia, USA
Paper Contents
Calculations, Model Tests and Full Scale Measurements on a Fully Feathering Controllable Pitch Propeller
C. Kruppa;
C. Kruppa
lnstitut fur Schiffs-und Meerestechnik
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Paper presented at the SNAME Propellers '88 Symposium, Virginia Beach, Virginia, USA, September 1988.
Paper Number:
SNAME-PSS-1988-09
Published:
September 20 1988
Citation
Kruppa, C., Pipplies, H., and W. Faller. "Calculations, Model Tests and Full Scale Measurements on a Fully Feathering Controllable Pitch Propeller." Paper presented at the SNAME Propellers '88 Symposium, Virginia Beach, Virginia, USA, September 1988. doi: https://doi.org/10.5957/PSS-1988-09
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