The Simulation and Analysis of Carrier Landings Using a Nonlinear Pilot Model.
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The report investigated the interaction of the pilot and the Fresnel lens optical landing system FLOLS with the aircraft system dynamics of a carrier landing and attempted to determine whether or not the dynamics of the FLOLS contributed to a nosedown command by the pilot when approaching touchdown. With the assumption of a nonlinear pilot model, the entire systems equations of motion were programmed on an analog computer and time histories of approaches for various pilot gains were recorded and analyzed. Results obtained showed that the stability of the entire system near touchdown was very sensitive to gains which the pilot adopted. Also, because of the lag in the FLOLS dynamics, the pilot would, for some pilot gains, input a definite nosedown command to counteract a rising meatball on the FLOLS display. The typical result of such a command is a hard landing or ramp strike. Author
- Personnel Management and Labor Relations