Resistance and self-propulsion data are presented for Model 5048 fitted with tunnels equal in depth to basic propeller diameter. The relative merits of seven combinations of LCG position, propeller diameter and trim tabs are discussed. A forward LCG position offers the best combination of draft and shaft power. Comparisons are also made with the same hull without tunnels and with two sets of shallow tunnels. The 100 percent tunnel is inferior to both shallower tunnels in draft and power requirements, but it gives superior propeller protection for beaching operations. The 65% tunnel requires the least draft and gives good propeller protection, but it requires more power than the 40% tunnel. (Author)


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    Titel :

    Propulsion Experiments with a Deep Tunnel Planing Hull


    Beteiligte:
    W. E. Ellis (Autor:in) / R. Alder (Autor:in)

    Erscheinungsdatum :

    1977


    Format / Umfang :

    67 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Propulsion experiments with a deep tunnel planing hull

    Ellis, W.E. / Alder, R. | Tema Archiv | 1977


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