활주선의 하중 및 무게 중심 위치 변화가 항주 자세에 미치는 영향에 대한 연구
A Study on the Effects of Weight and Center of Gravity of a Planing Craft on Running Attitude
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Motion characteristics of a planing craft are sensitively changed according to its weight and longitudinal center of gravity. In this paper, planing craft model tests were performed in calm water for various test conditions and Froude numbers. Sinkage and trim were measured to analyze the relations between the attitudes of a planing craft and the weight and center of gravity of it. Theoretical formula for the prediction of the attitudes of a prismatic planing hull was modified so that it can be applied to the prediction of the attitudes of a non-prismatic planing hull, and the calculation results by the modified formula were in good agreements with the experimental data.
Abstract
Motion characteristics of a planing craft are sensitively changed according to its weight and longitudinal center of gravity. In this paper, planing craft model tests were performed in calm water for various test conditions and Froude numbers. Sinkage and trim were measured to analyze the relations between the attitudes of a planing craft and the weight and center of gravity of it. Theoretical formula for the prediction of the attitudes of a prismatic planing hull was modified so that it can be applied to the prediction of the attitudes of a non-prismatic planing hull, and the calculation results by the modified formula were in good agreements with the experimental data.
참고문헌 (8)
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- Theoretical Determination of Porpoising Instability of High-Speed Planing Boats, "Martin M.", ~, pp.DTNSRDC Report 76-0068 (1976)
- Savitsky D., "Hydrodynamic Design of Planing Hulls", Marine Technology, 1(1) (1964)
- 신정일, "고속 예인시스템을 이용한 단을 가진 활주형선의 저항특성 고찰", 대한조선학회 논문집, 42(4), pp.341~349 (2005), 대한조선학회
- A Theoretical and Experimental Study of Planing Surfaces Including Effects of Cross Section and Plan Form, "Shuford C.L.", NACA, ~, pp.Report 820 (1957)
- 여동진, "활주선의 정상 활주 상태 모델을 이용한 WIG선의 이수 상태 추정", 대한조선학회 논문집, 44(5), pp.534~541 (2007), 대한조선학회