High-speed planing hulls support their weight by dynamic lift, rather than by buoyancy as in the case of displacement ships. Planing hulls therefore have a high-pressure region on the hull bottom, which gives rise to a water spray that spreads out on both sides of the hull. The spray is considered to be one component of the pressure drag. The results of observations of the spray configuration on prismatic planing-hull models are described. The spray flow velocity field and the flow flux are also measured to obtain the spray thickness and the momentum loss due to the spray. It is found that the spray resistance thus measured constitutes a large part of the total pressure drag of the model hull.

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  • Supplemental Notes:
    • Journal article
  • Authors:
    • Hirano, S
    • Inatsu, S
    • Himeno, Y
  • Publication Date: 1990-9

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Filing Info

  • Accession Number: 00661842
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM