The invention discloses a concave-convex surface ship rudder with different cross section thicknesses, which is characterized in that the basic outline of the cross section of the ship rudder consistsof two airfoils with different thicknesses, and the chord lengths of the two airfoils with different thicknesses are the same. Compared with a common ship rudder, the concave-convex surface ship rudder has the advantages that the stall angle of the ship rudder can be increased, the lift force generated by the ship rudder at the same rudder angle is improved, and the steering performance of the ship rudder is further improved. Under the same operation condition, the concave-convex surface ship rudder can reduce negative effects caused by cavitation and the like of the ship rudder, and the service life of the ship rudder is prolonged.
本发明公开了一种具有横截面厚度不同的凹凸面船舶舵,其特征在于船舶舵横截面的基本轮廓由两个不同厚度的翼型组成,且两个不同厚度翼型的弦长相同。本发明与通常的船舶舵相比,凹凸面船舶舵可以使得船舶舵的失速角有所增大,并且提高船舶舵在相同舵角下产生的升力,进而提高船舶舵的转向性能。在相同的运行工况下,凹凸面船舶舵可以降低船舶舵汽蚀等造成的负面影响,提高船舶舵的使用寿命。
Concave-convex surface ship rudder with different cross section thicknesses
横截面厚度不同的凹凸面船舶舵
2020-11-10
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |