Function :
Propeller boss cap fins (referred to as vortex-eliminating
fins) are a type of energy-saving auxiliary device installed on
the propeller boss cap (i.e., the cylindrical protrusion at the
center of the propeller) of ships. The core principle is that when
the propeller rotates, the fins of the propeller boss cap fins
generate a reverse thrust and turbulence effect on the boss
cap vortex, which on the one hand offsets the rotational
energy of the vortex and reduces energy waste; on the other
hand, optimizes the flow field around the boss cap, allowing
water to flow more smoothly through the propeller, thereby
improving propulsion efficiency.
Features :
Convenient maintenance: The fins only require regular inspection and cleaning.
Simple structure and convenient installation: Can be integrated into new ships during the design phase; for old ship retrofits, it can be quickly installed through positioning marks during docking;
Energy saving and consumption reduction: Achieves an average energy saving of 1.5-3% per unit
