航行船体の針路の安定性並に自動操舵の理論
1954 年 1954 巻 86 号 p. 309-316
詳細
1954 年 1954 巻 86 号 p. 309-316
The ship on the voyage cannot maintain her course by herself alone, yaws under the disturbing forces such as gusts, winds and waves, and deviates gradually from her initial direction.
Accordingly pilots must always take the rudder in order to hold her course.
The actions of rudder are as follows:
ρ=κφ+λφ+μφ(κ, λ, μ>0)
where ρ Angle of rudder
φ Angle of yaw
κ, λ, μ Constants of the steering apparatus.
κφ restores the deviated course to initial direction.
λφ has the damping action on the oscillation of direction
μφ absorbs the impulsive energy of gusts and waves.
