A pilot's perception of variables presented on the EFIS (Electronic Flight Instrument System) was investigated. A stimulus response technique was used to determine the accuracy and speed of the perception process. Results of experiments on roll and pitch attitude perception, the influence of scale division, and the perception of the indicated airspeed, are shown. Form the results it appears that both the magnitude of a variable (roll and pitch attitude and indicated airspeed) and its first derivative or rate, can be perceived. For all variable and display combinations it was shown by varying the exposure time of the stimuli the perception of the magnitude of the presented variable, as expressed by the score parameter, is more accurate than the perception of its rate. In addition, the exposure time and the reaction time required for the perception of the variable are shorter than for its rate. It turned out that a variable can be perceived after an exposure time of approximately 50 ms. The comparison of analog and digital presentations of indicated airspeed demonstrated that the most accurate and fastest perception of airspeed magnitude is obtained with the digital presentation. Perception of airspeed rate from the analog presentations is improved dramatically by adding a trend vector to the moving tape indicator.
Perception of flight information from EFIS displays
Wahrnehmen von Fluginformationen mit verschiedenen Anzeigegeräten in Flugzeugen
Control Engineering Practice ; 5 , 3 ; 383-390
1997
8 Seiten, 17 Bilder, 5 Quellen
Article (Journal)
English
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