The test results indicated that the variation of the spacing between propeller and rudder bulb has obvious effect on propeller open water efficiency.
试验结果表明，桨、舵球间距的变化对螺旋桨敞水效率的影响是明显的。
2
Electrohydraulic control unit whose performance has direct effect on rudder's characteristics is the key component of ship rudder position control system.
电液控制单元是船用舵机电液位置伺服系统关键部件，其性能的优劣直接影响舵机的性能。
3
The effect is small and can be corrected by the rudder.