| This thesis presents an analysis tool which predicts longitudinal flying qualities of aircraft subject to elevator rate limiting and nonlinear stick gradient. Our method is based on pilot-in-the-loop analysis and provides an explicit mathematical pilot model for nonlinear aircraft. Using pilot-in-the-loop simulation, flying qualities metrics can be computed for evaluation of the level of flying qualities. The proposed method is validated using real flight data.; An aircraft compensator design methodology (CAWCOM) is also presented that improves the flying qualities despite the aircraft nonlinearities. As a result, the control system obtained by the CAWCOM methodology achieved the design goal of improving flying qualities both in terms of reducing the pilot's workload and enhancing the tracking performance.; Pilot modeling to represent human pilot's nonlinear behavior and controller design that augments the pilot-vehicle closed-loop system for flying qualities enhancement are the key subjects of this research. |
