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Abstract:
Anexperiment was conducted in theSIMONAResearch Simulator at Delft University of Technology to investigate the influence of sway, roll, and yaw motion cues on pilot performance, control, and motion perception during decrab
maneuvers. In the experiment, six pilots were instructed to perform manual decrab maneuvers in heavy crosswind
conditions with a Cessna Citation 500 model. The contributions of yaw, roll, and sway motion stimuli were varied such that their effects on objective measures and subjective ratings could be examined. The results of this experiment show that yaw motion had a positive influence on performance in terms of lateral touchdown distance from the
runway centerline. Roll motion significantly decreased roll rate variations during decrab. High workload and the
relatively low intensity of lateral motion cues led to the fact that pilots were unable to give consistent fidelity ratings.
This result emphasizes the need for an objective and quantifiable method to determine motion fidelity for such
maneuvers. Pilot models can possibly be used to further investigate the influence of different motion cues in these
transient control tasks.
