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 yieled 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 numbers 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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    Titel :

    Developments in the Velocity Prediction Based on the Delft Systematic Yacht Hull Series. International Conference on the Modern Yacht. Held in Portsmouth, England on March 18-19, 1998


    Beteiligte:
    J. A. Keuning (Autor:in) / U. B. Sonnenberg (Autor:in)

    Erscheinungsdatum :

    1998


    Format / Umfang :

    26 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Developments in the Velocity Prediction Based on the Delft Systematic Yacht Hull Series

    Keuning, J. A. / Sonnenberg, U. B. / Royal Institution of Naval Architects; Small Craft Group et al. | British Library Conference Proceedings | 1998


    Resistance of the unappended Delft Systematic Yacht Hull Series

    Keuning, J. A. / Onnink, R. / Versluis, A. et al. | British Library Conference Proceedings | 1997



    Proceedings - International Conference on the Modern Yacht, 18 & 19 March 1998, Portsmouth

    International Conference on the Modern Yacht / Royal Institution of Naval Architects, Small Craft Group | TIBKAT | 1998