Determination of Propeller-Ice Milling Loads
Determination of Propeller-Ice Milling Loads
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DOI：
10.1115/1.3257009
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发表时间：
1987-05
影响因子：
1.6
通讯作者：
T. Kotras;D. Humphreys;A. Baird;G. Morris;G. Morley
中科院分区：
文献类型：
--
作者：
T. Kotras;D. Humphreys;A. Baird;G. Morris;G. Morley
在设计冰过境船舶时，主要关注的是螺旋桨的设计，以提供足够的强度来抵抗由于螺旋桨冰磨而引起的冰载荷，同时仍然为开放水域观测提供良好的螺旋桨效率以及在缓慢前进速度下的高破冰推力。因此，螺旋桨设计是强度和效率之间的折衷。对于必须在无冰航线上长距离运输然后进行困难的破冰作业的冰过境船舶来说，情况尤其如此。提供良好强度的螺旋桨叶片的几何特性是叶片宽度和厚度。不幸的是，提高这些性能并不能提供最佳的效率。在设计折衷方案中，一般冰渡船的螺旋桨设计倾向于强度和可靠性而不是效率。本文的目的是概述一种方法，用于确定螺旋桨的冰磨负荷作为螺旋桨特性，螺旋桨速度，船速，冰况和冰磨深度的函数，以帮助在螺旋桨的设计过程。
In designing ice transiting ships, a major concern is the design of the propeller to provide adequate strength to resist ice loads due to propeller ice milling while still providing good propeller efficiency for open water observations as well as high icebreaking thrust at slow advance speeds. As a result, propeller design is a compromise between strength and efficiency. This is especially true for ice transiting ships that must transit long distances on ice-free routes and then perform difficult ice-breaking operations. The geometric properties of a propeller blade that provide good strength are blade width and thickness. Unfortunately, increasing these properties does not provide the best efficiency. Propeller design for ice transiting ships in general has tended to favor strength and reliability over efficiency in design compromises. The purpose of this paper is to outline a methodology for determining propeller ice milling loads as a function of propeller characteristics, propeller speed, ship speed, ice conditions and depth of ice milling to help in the propeller design process.