User`s guide

Yaw Damper for a 747 Jet Transport
9-5
Compute the open-loop eigenvalues and plot them in the -plane.
damp(sys)
Eigenvalue Damping Freq. (rad/s)
-7.28e-003 1.00e+000 7.28e-003
-5.63e-001 1.00e+000 5.63e-001
-3.29e-002 + 9.47e-001i 3.48e-002 9.47e-001
-3.29e-002 - 9.47e-001i 3.48e-002 9.47e-001
pzmap(sys)
This model has one pair of lightly damped poles. They correspond to what is
called the “ Dutch roll mode.”
s