SIMULATION ANALYSIS OF AUTOMATIC AND QUICKENED MANUAL CONTROL DURING UNDERWAY REPLENISHMENT

This final report summarizes the final results and conclusions of a program to define and analyze the control parameters affecting the dynamic interactions between two ships during Underway Replenishment (UNREP) and to make recommendations for a prototype ship separation monitoring system. Results of hybrid computer simulations of UNREP by two identical, Mariner class ships, including consideration of nonlinear maneuvering equations, regular waves, severe first- and second-order irregular-wave excitations, time-sampled separation measurements, and low-pass filters, are presented. Contrary to earlier assumptions, first-order irregular-wave excitations were found to dominate the UNREP control problem. Use of either automatic or quickened manual control was found to be feasible, but work is needed to define the capabilities and limitations of quickening in this application. Recommendations for development of a prototype ship separation sensing system are presented. (Author)

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Bethesda, MD  United States  20084
• Authors:
  • Brown, S H
  • Dimmick, J G
• Publication Date: 1980-6

Media Info

• Pagination: 141 p.

Subject/Index Terms

• TRT Terms: Automatic control; Automation; Control systems; Dynamic loads; Excitation; Hybrid simulation; Hydrodynamics; Information display systems; Loads; Maneuvering; Manual control; Merchant vessels; Monitoring; Ship motion; Simulation; Water waves
• Uncontrolled Terms: Dynamic response; Interaction; Separation
• Old TRIS Terms: Automatic control systems; Manual operation; Replenishment at sea; Sea states
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00318594
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DTNSRDC-80/007 Final Rpt.
• Files: TRIS
• Created Date: Oct 27 1980 12:00AM