In this paper, the multiple-delay-model and multiple-design-point (MDM/MDP) approach is applied to the AIAA 1992 Controls Design Challenge. Design goals of the flight control system are presented with standard quadratic performance indices, and linear control laws of constant feedback gains are obtained numerically with parameter optimization. Robustness against uncertainties is guaranteed by giving appropriate MDMs, and robustness against changing dynamics is obtained by selecting MDPs. Trade-offs between control performance and robustness are conducted with MDMs. Simple Pis introduce reasonable feedback control laws. Realistic control laws are derived from the analytical results. Time responses of the two given flight missions and performances at four evaluation points demonstrate feasibility of the simple constant-gain feedback control.
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