SEAKEEPING CHARACTERISTICS OF THE XR-5, A HIGH LENGTH-BEAM RATIO MANNED SURFACE EFFECT TESTCRAFT: 1. XR-5 MODEL RESPONSE IN REGULAR HEAD WAVES

Motion response data for regular waves in head seas is presented for a model of a high length-beam ratio surface effect ship (SES). Data is presented in normalized form for pitch, heave, relative bow velocity, relative bow motion stern seal motion, bow acceleration and heave acceleration. The pitch motion data exhibits a resonant or underdamped behavior governed by a constant natural frequency throughout the speed range investigated. The wave pumping effect was observed in the supercritical frequency range, and was particularly evident in the normalized acceleration data. The relative bow motion exhibits a pronounced peak at a frequency slightly above the pitching natural frequency.

• Corporate Authors:

  Naval Ship Research and Development Center

  Ship Performance Department
  Bethesda, MD  United States  20034
• Authors:
  • Magnuson, A H
  • Wolff, K K
• Publication Date: 1975-3

Media Info

• Pagination: 89 p.

Subject/Index Terms

• TRT Terms: Motion; Seakeeping; Ship motion; Studies; Surface effect ships
• Old TRIS Terms: Motion studies
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00098787
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-616-01
• Files: TRIS
• Created Date: Aug 13 1975 12:00AM