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…motion are derived for the general case of motion with six degrees of freedom.
Dynamics of first and second order linear systems as well as that of nonplanar rigid-body motion are reviewed.
Nonlinear steady state level trim and maneuvers are considered. Equations of motion are linearized for
analyzing the linear modes of motion and dynamic stability…
https://www.wichita.edu/academics/engineering/aerospace/documents/SAMPLE_SYLLABI_MS/AE714_Syllabus.pdf