Vertical navigation displays : pilot performance and workload during simulated constant-angle-of-descent GPS approaches
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Published Date:2000-03-26
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Language:English
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NTL Classification:NTL-AVIATION-Aviation Human Factors ; NTL-SAFETY AND SECURITY-Human Factors ;
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Abstract:This study compared the effect of alternative graphic or numeric cockpit display formats on the tactical aspects of vertical navigation (VNAV). Display formats included: a) a moving map with altitude range arc, b) the same format, supplemented with a push-to-see profile view, including a vector flight path predictor, c) an equivalent numeric format, d) a numeric non-VNAV format. Sixteen pilots each flew four different approaches with each format in a Frasca 242 simulator. Vertical and horizontal flight technical errors (FTE), workload, and subjective display preferences were measured. VNAV displays improved vertical FTE by as much as a factor of two without increasing workload. Relative advantages of the graphics formats are discussed.
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