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发表于 2015-9-22 13:49
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来自: 中国上海
本帖最后由 ghuang 于 2015-9-22 13:52 编辑
根据Resoliution MSC.365(93),2016年1月1日之后,SOLAS对于操舵实验的要求就改了。从现在的必满载操舵改为三个方法选一个。
1 during sea trials the ship is at even keel and the rudder fully submerged whilst running ahead at the speed corresponding to the number of maximum continuous revolutions of the main engine and maximum design pitch; or
2 where full rudder immersion during sea trials cannot be achieved, an appropriate ahead speed shall be calculated using the submerged rudder blade area in the proposed sea trial loading condition. The calculated ahead speed shall result in a force and torque applied to the main steering gear which is at least as great as if it was being tested with the ship at its deepest seagoing draught and running ahead at the speed corresponding to the number of maximum continuous revolutions of the main engine and maximum design pitch; or
3 the rudder force and torque at the sea trial loading condition have been reliably predicted and extrapolated to the full load condition. The speed of the ship shall correspond to the number of maximum continuous revolutions of the main engine and maximum design pitch of the propeller;"
你们可以根据第二项和船级社进行沟通来做实验。基本上的方法就是通过浸没舵页面积推出相应的扭矩,并限制舵机的油压来达到扭矩,这个计算和实验都不难实现。
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