Marine Flap Rudder
Marine flap rudder is composed of main rudder and auxiliary rudder, that is called flap. The flap is located at the trailing edge of the main rudder blade and can be independently controlled by the servo mechanism.
The main rudder and flap rotate in the same direction, but the rotation angle of the auxiliary rudder is larger than that of the main rudder. In this way, it increases the camber of the rudder profile, thus generating more fluid power and improving the transship moment and rudder efficiency. It is called flap rudder because its hydrodynamic characteristics are very good at small rudder Angle, and the effect is the same as that of the flap on the aircraft. The steering torque of this kind of rudder is small, so the servo power required is small, but its structure is more complex.
Overview
There are two types of flap rudder. One is to make the flap angle greater than the main rudder blade angle through the connecting rod or gear mechanism when turning the rudder, so as to improve the ship's maneuverability. Another type of flap rudder has the flap steering opposite to the main rudder blade, which is aimed to reduce the torque of the rudder rod or use the flap to operate the main rudder blade. The flap rudder is suitable for the ship sailing in the multi-bend channel. Most of the large push wheels are used.
The flap rudder can be divided into suspension rudder and double fulcrums balance rudder according to its support mode. According to the transmission mechanism of the tail, it can be divided into gear flap rudder, slider flap rudder, guide rod flap rudder and rocker arm flap rudder.
Features:
Improved rudder performance
High navigation efficiency and security
Small power of steering engine
Extreme low-speed manoeuvring performance
Stability and durability
Corrosion-resistant materials
Simple operation, easy installation and maintenance
