A theoretical investigation of hydrodynamic impact loads on scalloped-bottom seaplanes and comparisons with experiment

Milwitzky, Benjamin
naca-report-867
1947


An analytical method is presented for calculating the hydrodynamic impact loads and motions experienced by seaplane floats and hulls with scalloped (fluted) bottoms. The analysis treats vertical impact at zero trim in addition to the more general problem of the step impact of a seaplane at positive trim where the flight path is oblique to the keel and to the water surface. Also considered are the transformations required to represent impacts into waves.

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