In the past few years new techniques used for prediction of the performance of sailing yachts (in waves) have been developed. In this paper two aspects will be dealt with in more detail: First the calm water resistance of sailing yachts has been further developed in order to be able to predict the performance of a wider variety of sailing yacht designs with an improved accuracy. New extensions to the well known Delft Systematic Yacht Hull Series (DSYHS) have been tested in the towing tank of the Delft Shiphydromechanics Laboratory. These tests have been performed with the bare hull models as well as with the models with keel and rudder. The results of these experiments yielded new expressions which will be used to formulate new polynomial approximations in the Velocity Prediction Program as developed a/o. by the Delft Shiphydromechanics Laboratory. Secondly in this paper the results of large number of towing tank experiments carried out with a series of five models of the DSYHS in waves and their analyses will be presented. The results of these experiments will be compared with the previously obtained approximations based on the results of systematic 2-D strip theory calculations of the added resistance of sailing yachts in waves in order to be able to validate these results.


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    Title :

    Developments in the velocity prediction based on the Delft Systematic Yacht Hull Series


    Additional title:

    Entwicklungen in der Geschwindigkeitsvorhersage auf Basis der Delft Systematic Yacht Hull Series


    Contributors:


    Publication date :

    1998


    Size :

    16 Seiten, 14 Bilder, 6 Tabellen, 20 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    Geometry, resistance and stability of the Delft systematic yacht hull series1

    Gerritsma, J. / Onnink, R. / Versluis, A. | IOS Press | 1981