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Turning Circle - Coggle Diagram
Turning Circle
Phases
1st
From rudder beginning to deflect
until complete deflection
Develop of
Rudder Force \(Y_\delta \delta_R \)
Rudder Moment \( N_\delta \delta_R \)
2nd
Appears
Drift Angles \( \beta \)
Rotation
ship tends to other side of the turn (abatimento)
Force towards centre of turn
\( Y_v v \)
Oposite side of rudder force \( Y_\delta \delta_R \)
3rd
Steady Turning Radius
Proportional to L
Inversely proportional Rudder Angle
Merchant Ships - full rudder
BTW 2 to 4 Shiplengths
Pivot Point
Usually
1/5 L aft from bow
pivot point from centre of gravity \(x_c\)
For large Drift Angles
BTW 0,4 and 0,5L
For small Drift Angles
0,3L
Small radius turns
Large drift angles