SWATH 6D Model Experiments in Regular Head and Following Waves with and without Floodable Struts.

Abstract

Experiments were conducted with a model of a tandem strut small waterplane area twin hull ship in the Carriage II Facility of the David W. Taylor Naval Ship Research and Development Center (DTNSRDC) to determine motions and accelerations at various speeds and two headings. Data were obtained in regular waves for model configurations with the struts intact and for the struts with 40% of the waterplane area flooded. Experimental results are compared with those for previously tested strut configurations with the same model lower hulls. Pitch and relative bow motions for the intact strut configuration decrease dramatically in head seas as speed increases up to 28 knots. Flooding about 40% of strut waterplane area resulted in a large increase in natural heave, pitch and roll periods and a decrease in pitch, relative bow and vertical motions for the craft operating in head seas at up to 20 knot speeds. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1980
Accession Number
ADA085567

Entities

People

  • David W Taylor
  • James A. Kallio

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Carriages
  • Displacement
  • Engineering
  • Fiberglass
  • Floods
  • Instrumentation
  • Materials
  • Mathematics
  • Measurement
  • Models
  • Relative Motion
  • Resonant Frequency
  • Scale Models
  • Ships
  • Transducers
  • Transfer Functions
  • Waves

Readers

  • Marine Hydrodynamics