The National Shipbuilding Research Program. Proceedings of the REAPS Technical Sympsoium. Paper No. 14: Generating New Ship Lines From a Parent Hull
Abstract
Section area curve variation may be used to obtain a new set of fair ship lines from a parent hull by varying any or all of the following parameters: prismatic coefficient, longitudinal center of buoyancy, extent of parallel midbody, or slopes at entrance and run. A standard series may be obtained by varying any one of these parameters independently while holding the other parameters constant. Deriving a new set of ship lines using this approach has an advantage over other methods since a known parent hull with good stability, resistance, seakeeping, etc, qualities may be selected as the starting point for the new design. In this paper a linear system of 10 simultaneous equations is presented which allows the independent variation of three of the parameters: prismatic coefficient, longitudinal center of buoyancy, and extent of parallel midbody on a parent section area curve. Another linear system of 12 simultaneous equations is presented which allows the independent variation of the above three parameters and the slopes at the entrance and run of a parent section area curve. A new set of ship lines can be obtained directly from the new section area curve. Matrix methods are used to solve the systems of equations. Several examples with numeric and graphic results from a computer program developed at the Maritime Administration are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1980
- Accession Number
- ADA448424
Entities
People
- Robert Mcnaull