The project focused on the analysis and synthesis of active rotor controls. The rotor was modeled as a periodic system. The key accomplishments are: (i) First systematic study of the effect of zeros in rotorcraft aeromechanics. The "zeros" play a key role in the closed-loop behavior of the system. As rotor active controls become feasible, the calculation of zeros needs to become a routine design step. (ii) First study of ...
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