The invention discloses a rotatable ship rudder with bulge front edges, which relates to the technical field of rudder structures. The rudder comprises a main rudder blade and a tail rudder blade, thetail rudder blade is arranged at the rear end of the main rudder blade, and the main rudder blade comprises a body and a plurality of bulge front edges which are arranged at the front end of the bodyand protrude forwards. The bulge front edge structure can improve the flow field structure, the main rudder blade and the tail rudder blade can increase the bending degree of the rudder blades, and the combination of the two can improve the hydrodynamic performance of the rudder and improve the stability of the ship; cavitation erosion can be reduced through the oval front edge or the curvature continuous front edge blade profile, and the service life of the rudder is effectively prolonged; the bulge front edge and the body curvature of the main rudder blade are in continuous transition combination, or the bulge front edge and the body ellipse of the main rudder blade are in transition combination, so that the rudder resistance during advancing can be reduced, and the oil consumption is reduced; the main rudder blade is connected with the ship body through the rudder stock, the tail rudder blade is connected with the ship body through the auxiliary rudder stock, bearing of the rudderstock can be reduced, and stability of the cantilever rudder is improved.
本发明公开一种带鼓包前缘的可转动船舶用舵,涉及船舵结构技术领域,所述舵包括主舵叶和尾舵叶,所述尾舵叶设置于所述主舵叶的后端,所述主舵叶包括本体以及所述本体的前端设置的多个向前凸起的鼓包前缘。鼓包前缘结构可改善流场结构,且主舵叶与尾舵叶可增加舵叶弯度,二者结合,可提升舵的水动力性能,改善船舶稳定性;椭圆型前缘或曲率连续型前缘叶型可减少空泡侵蚀,有效延长舵使用寿命;鼓包前缘与主舵叶的本体曲率连续型过渡结合,或鼓包前缘与主舵叶的本体椭圆形过渡结合,能够降低前进时的舵阻力,从而降低油耗;主舵叶由舵杆与船体连接,尾舵叶由辅助舵杆与船体连接,可降低舵杆的承重,并增加了悬臂舵的稳定性。
Rotatable ship rudder with bulge front edges
一种带鼓包前缘的可转动船舶用舵
14.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |