Operational spacecraft undergo substantial mass property and configuration changes during their lifetime [25]. For example, the inertias change considerably during operations. Consider the orientation control system shown in Figure AP9.1.
(a) Plot the Bode diagram, and determine the gain and phase margins when ωn2 = 15,267. (b) Repeat part (a) when ωn2= 9500. Note the effect of changing ωn2 by 38%.
