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- W589030699 abstract "Some of the energy dissipated in the formation of the boundary layer around a moving ship can be recovered by the propeller converting it into thrust. The Author gives an account of tests on a ship model with a form designed to direct the detached boundary-layer towards the propeller, with the object of recovering more of this energy. The model, a form without parallel sides and a full forebody combined with a very fine afterbody, represented a single-screw, 253-m long, 16-knot cargo-ship. Its form was developed by distorting that of a model of good conventional shape, and of known performance, whose wake has been surveyed by measuring pressure losses in the water, well behind the model (1/4L astern of the AP). Similar surveys were carried out on the fish-form model. The article includes body plans and principal particulars of both hull-forms, and also diagrams giving the results of the surveys of each form with loaded propeller and without propeller; the survey results are discussed. The results of performance tests on the fish-form model are compared, in some detail, with those from the conventional model, and show, inter alia, that at 16 nots the fish form has about 5.8% less resistance and requires about 5.6% less power. These results, and their significance, are discussed. This work was carried out at the Hamburg tank, as part of the SFB 98 program." @default.
- W589030699 created "2016-06-24" @default.
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- W589030699 date "1976-10-01" @default.
- W589030699 modified "2023-09-26" @default.
- W589030699 title "POWER SAVING THROUGH A SHIP FORM THAT INFLUENCES BOUNDARY- LAYER WAKE" @default.
- W589030699 hasPublicationYear "1976" @default.
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