Accession Number : ADA016934

Title :   Wave-Pattern Measurement Using a Half-Ship Model,


Personal Author(s) : Bellows,Gerald E.

Report Date : AUG 1975

Pagination or Media Count : 62

Abstract : This report contains an investigation of the wave pattern of a half-ship model. Using a 5-foot ship model that has been cut in half along the vertical centerline plane and by towing this half model very close to one wall of the model tank, a wave pattern corresponding to that produced on one side of a symmetric ship model is obtained. The longitudinal-cut method is used to measure the wave pattern. Comparisons of the wave resistance of the half model and whole model are given. It is apparent from these that the results are in agreement for distances from the wall of less than three inches. These results show that the length of a longitudinal cut before reflection occurs can be doubled by using this procedure rather than towing a conventional ship model in the center of the tank. This is especially useful for tests of high-speed hull forms.

Descriptors :   *Ship hulls, *Ocean waves, Ship models, Model basins, Model tests, Mathematical models

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE