Results are presented for a four-bladed .60 expanded-area ratio merchant-ship propeller series tested in the cavitation tunnel in the Department of Naval Architecture and Shipbuilding, King’s College, Newcastle upon Tyne, over a wide range of advance coefficient and at cavitation numbers from the low values corresponding to twin-screw passenger-liner propellers up to the higher values for a large single-screw cargo ship. The variations studied are pitch-ratio, distribution of area and distribution of pitch, and, to some extent, changes in blade-section shape, and the paper includes design charts in the usual form, together with simple cavitation diagrams derived from the test results.
Most of the work has been carried out in a uniform stream, but the final section relates to tests made in a radially variable stream velocity.
The paper also considers specific designs at each end of the merchant-ship range; four- and five-bladed propellers for a passenger liner; five- and six-bladed propellers for a large tanker. Som observations of variable-wake tests are given.
Propeller cavitation: Further tests on 16in. propeller models in the King’s College cavitation tunnel1
Merchant ship propellers with four, five and six blades
International Shipbuilding Progress ; 10 , 104 ; 119-131
1963-04-01
13 pages
Article (Journal)
Electronic Resource
English
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