A ROLL, FIN, AND FIN CONTROLLER PREDICTION COMPUTER PROGRAM

A series of computer program is under development for use in the design and evaluation of roll stabilization devices. This report is the user manual for the first program that has been completed. Identified by the acronym FINCON, the program is based on the work of Cox and Lloyd published in Volume 85 of the transactions of the Society of Naval Architects and Marine Engineers. FINCON predicts stabilized and unstabilized ship roll motion, bilge keel and antiroll fin sizing effects, and the influence of fin controller characteristics by use of a one degree-of-freedom roll-motion equation. Nonlinear roll damping characteristics, derived from model experiments or by other means, are incorporated by a combination of equivalent linearization and an iteration procedure. Results are predicted for short-crested seas (for stabilizer design purposes) and long-crested seas, which are described by two-parameter Bretschnieder wave spectra. (Author)

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Bethesda, MD  United States  20084
• Authors:
  • Bales, S L
  • Tucker, J R
  • Cox, G G
• Publication Date: 1980-6

Media Info

• Pagination: 63 p.

Subject/Index Terms

• TRT Terms: Aircraft fins; Algorithms; Bilges; Computer aided design; Computer programs; Damping (Engineering); Damping (Physics); Electromagnetic spectrum; Iterative methods; Manuals; Naval architecture; Ocean waves; Rolling; Seakeeping; Ship motion; Simulation; Size; Soil stabilization; Stabilizers; Training
• Uncontrolled Terms: Control surfaces
• Old TRIS Terms: Bilge keels; Fin stabilizers; Fins; Roll; Roll damping; Roll stabilization; Stabilization systems
• Subject Areas: Education and Training; Geotechnology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00318553
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DTNSRDC-80/014 Final Rpt.
• Files: TRIS
• Created Date: Oct 27 1980 12:00AM