1 research outputs found
Study on the rudder characteristics of ultimate rudder by numerical calculation
The authors invented Ultimate Rudder3) as the rudder with bulb. The authors
calculated the rudder characteristics of the normal rudder and Ultimate Rudder by CFD
at several steering angles and compared these values. The result showed that regardless of the
presence or absence of the bulb, signs of separation appear on the control surface
with a steering angle of 20 deg. to 30 deg. and regarding the steering torque coefficient, it was
found that the steering torque coefficient of Ultimate Rudder is larger than the normal Rudder when
the steering angle is less than 20 deg. and also the steering torque coefficient can be decreased
by changing the shape of the rudder bulb