EXPERIMENTS ON ROTATIONAL IMPACT
Abstract
The results of an experimental investigation to determine the pressures produced on the bottom of a slamming ship when impact with the smooth water surface results from simple rotation in the plane of symmetry are presented. The effect of forward speed of advance is not included. Graphs are included which show pressure dependence on time and on shape for a particular transverse section. A comparison of experimental and theoretical average pressures for this station shows good agreement in magnitudes for the theoretical computations available. It is necessary to consider only those pressures which occur a short time after the keel contacts the water surface. Thus the proper application of the theory requires that the immersion be small, but greater than zero. With this restriction an examination of maximum pressures over the forward 22.5 percent of the ship's length shows that the region experiencing the highest pressures is located approximately at 9 percent of the ship's length aft of the forward perpendicular. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0269765
Entities
People
- Frank M. Schwartz
- Margaret D. Bledsoe