MATHEMATICAL SHIP LOFTING AND NUMERICAL CONTROL OF SHIPYARD FABRICATING EQUIPMENT. VOLUME 3, SUMMARY REPORT

The formulation for mathematically fairing curves and surfaces presented in Volume 3 has proved capable of economically fairing large areas of the molded form up to half the ship in size. In addition, a satisfactory method was developed for fairing mathematically the extreme ends where discontinuities occur. The joining of these several faired surfaces to form a single fair surface has not yet been successfully demonstrated. The fairing method was incorporated in a system of programs which provide loft data mathematically. Some of these programs were actually used for producing loft data. Several elements of the fairing system require additional development work. These items are listed. There is a need to reduce the size and density of the problem so that larger surfaces can be handled more efficiently. Production use of the fairing method itself should be attempted only after the additional work recommended has been completed. Suggestions for the solution of these problems are offered. The effort still needed is small compared to that already expended in formulating the method itself and demonstrating the system presented.

• Corporate Authors:

  Todd Shipyards Corporation

  Los Angeles Division
  San Pedro, CA  United States 
• Publication Date: 1963-3

Subject/Index Terms

• TRT Terms: Automatic welding; Automation; Control systems; Layout; Numerical control; Shipyards
• Old TRIS Terms: Automatic welding systems; Lofting; Numerical control systems; Shipyard mechanization
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00027573
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TR1 50 Final Rpt
• Contract Numbers: Nobs 4427
• Files: TRIS
• Created Date: Jul 9 1973 12:00AM