Influence of Outrigger Position on the Performaces of a High Speed Trimaran

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  • 高速三胴船の性能に及ぼすアウトリガー配置の影響
  • 高速三胴船の性能に及ぼすアウトリガー配置の影響(第3報)操縦性
  • コウソク サン ドウセン ノ セイノウ ニ オヨボス アウトリガー ハイチ ノ エイキョウ ダイ3ポウ ソウジュウセイ
  • (第3報 : 操縦性)
  • (3rd Report: Maneuverability)

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Influence of outrigger position of a high speed trimaran on the maneuverability was investigated. The trimaran is composed of the center hull with L/B = 8.0 and B/T = 3.57 where L, B and T denote the length, breadth and draft respectively, and the outriggers with l/L = 0.375 where l denotes the outrigger length. The captive model tests were conducted at Fn = 0.35 in towing tank of Hiroshima University to capture the hydrodynamic force characteristics of the trimaran with 3 different outrigger positions. Baesd on the force characteristics, maneuvering simulations were carried out. We found that with shifting the outrigger position rearward, the turning circle becomes large and the course-keeping ability is improved. The change comes from increase of lateral resistance at the stern part.

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