inputs. The yaw rate; however, is difficult to model because the vehicle is morphed asymmetrically and this introduces nonlinearities. These nonlinearities have to be considered in an approximation in order to obtain an accurate model. Time(sec) 40 20 20 -40 ' -60- Figure 6 10: 05 1 Time(sec) Simulated ( S0 25 20 15 4 o -d 5l -5 -10 15 2 o -) and Actual ( 05 1 15 2 Time(sec) ) Roll Rate(left) and Yaw Rate(right) Responses to Morphing Doublets