Zhu H., Three dimensional time domain approach and application for ship motion, Ph.D. , Fluid Dynamic Drag, New Jersy, USA, 1958. , Numerical investigation into the effect of launch skid angle on the behaviour of free-fall lifeboat in regular waves, Roy. , A comparative study on the behavior of free-fall lifeboat launching from a skid and from a hook, Proc. , Numerical simulation and its application on the falling motion of free-fall lifeboats, J. , Water entry simulation of free-fall lifeboat (First report: Analysis of motion and acceleration), J. , Launch and impact of free-fall lifeboat (Part I and Part II), Ocean Eng. , The Impact of Seaplane Floats During Landing, NACA, Washington, pp. , Free-fall fiber glass lifeboat water-entry analysis free-fall fiber glass lifeboat water-entry analysis, Ship Eng. , Reasearch on free-fall lifeboat test process, Marine Technol. , Assessing lifeboat coxswain training alternatives using a simulator, J.
Free fall lifeboat simulator#
et al., Using Bayesian methods and simulator data to model lifeboat coxswain performance, WMU J. , Numerical simulation of the 3D flow field in a ring die pellet mill considering viscous heating, Int. , Model maturity towards modeling and simulation: Concepts, index system framework and evaluation method, Int.
Free fall lifeboat free#
, A free fall lifeboat training system based on virtual reality technology, J. , Injury criteria of the IMO and the Hybrid III dummy as indicators of injury potential in free-fall lifeboats, Ocean Eng. (3) When the center of gravity is 1.5 m in front of the midship of the boat, the boat will turn over. When the initial angle is 60 ∘, the setback occurs after the boat entering the water. (2) When the initial inclination angle is 45 ∘, the setback may occur after the boat entering the wave. There is no obvious law between forward distance and waves. The horizontal distance will be smaller, when the initial inclination angle increases. The following conclusions are finally obtained: (1) When the initial inclination angle is 30 ∘, the horizontal distance between the point of water entry of the boat and the lower end of the slide is about 7.2 m. The model is used for numerical investigation about the boat launching from skid under different conditions and applied to ship life-saving simulation training system. The method of interpolation is used for calculating the half width and added mass of cross-sections at water entry. According to the theory of momentum and strip theory, hydrodynamic forces of the boat at water entry are calculated under the effect of waves. The whole launching is divided into four phases, namely: sliding down, rotation, free fall and water entry. In order to improve the simulation accuracy for free-fall lifeboat in ship life-saving training system, this paper analyzes and models the motion of boat’s launching from the skid.
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