A matrix database approach to the modeling of a planing craft thrustline in towing tank resistance experiments is presented. The matrix database approach does not actually attempt to model a specific thrustline geometry in the towing tank. Instead, a matrix of drag and running trims for a discrete range of model weights on water and longitudinal centers of gravity are obtained experimentally with a model fixed in surge, and free in pitch and heave. This matrix is then curve fitted and the desired thrustline conditions are either interpolated or extrapolated from the experimentally derived database. This method provides not only the performance information for the desired ballast and thrustline condition, but also the ability to estimate performance over a fairly large range of gross vehicle weights, longitudinal centers of gravity, and thrustline geometries. The matrix data base approach is a potential alternative to the classical modeling techniques used at present. In other classical approaches, only planing performance for the desired thrustline geometry and loading is obtained. By comparison, greater efficiency in obtaining design information for the planing craft design process results from utilizing the matrix database technique.

  • Supplemental Notes:
    • Conference paper
  • Authors:
    • Hoyt III, J G
    • Dipper, M J
  • Conference:
  • Publication Date: 0

Media Info

  • Pagination: 11p.

Subject/Index Terms

Filing Info

  • Accession Number: 00660845
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM