Study of podded propulsors with varied bub angle and configurations

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Journal titleInternational Journal of Maritime Engineering
Pages1934; # of pages: 16
SubjectPodded propulsor; hub taper angle; pusher and puller configurations; propulsive performance; global forces and moments; open water condition
AbstractThis paper presents an experimental study on the effects of tapered hub on the propulsive characteristics of puller and pusher podded propulsors in straight course and static azimuthing conditions while operating in open water. The propulsive performance of two model pod units having the same pod-strut shape and propeller blade geometry with different hub shapes were measured using a custom designed pod dynamometer. The dynamometer system consisted of a six-component global dynamometer and a three-component pod dynamometer. The measurements consisted of the forces and moments of the units in the three co-ordinate directions and thrust and torque of the propellers for a range of advance coefficients from 0 to 1.2 combined with the range of static azimuthing angles from +30° to –30° in 15° increments in pusher and puller configurations. The variations in the propulsive performance due to the change in hub geometry in straight ahead conditions were examined first, followed by a study on the effects in different static azimuthing angles. Comparison of the results of the two pod units illustrated that in both pusher and puller configurations, the effect of hub taper angle is more significant at lower advance coefficients while the effects increased with increasing azimuthing angle.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NPARC number18256197
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Record identifier2ad6c0ec-f5e3-45ac-9c46-47a5099dbc5a
Record created2011-07-13
Record modified2016-05-09
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