Function :
Rudder bulbs are streamlined flow-guiding devices
installed at the leading edge of the rudder body, directly facing
the propeller shaft. They usually have spherical or ellipsoidal
structure, with their centerline coinciding with the propeller
axis. The core principle is to block the formation path of the
boss vortex, convert rotational kinetic energy into axial thrust,
and improve the uniformity of the inflow to the rudder body,
thereby reducing turbulence and separated vortices.
Features :
Vibration reduction: mitigates the pulsation of the propeller wake and reduces hull structural fatigue.
High adaptability: Suitable for installation in both newbuilds and existing vessel retrofits, especially suitable for low-speed commercial ships.
Energy saving and consumption reduction: Achieves an average energy saving of 0.3-2% per unit
