Effects of Manual and Autopilot Control on Mental Workload and Vigilance During Simulated General Aviation Flight

Autor: Anthony J. Masalonis, Jacqueline A. Duley, Raja Parasuraman
Rok vydání: 1999
Předmět:
Zdroj: Transportation Human Factors. 1:187-200
ISSN: 1093-9741
Popis: Automation's effects on workload and vigilance were examined in a flight simulator. Nonpilots performed a single-axis tracking task, using the directional gyroscopic compass (gyro) as a cue to fly a constant heading during turbulence. They also monitored for two instrument abnormalities: motion of a normally stationary dial located 10° of visual angle horizontally from the gyro and freezing of the attitude indicator (normally constantly moving due to the turbulence), located 4° vertically from the gyro. Participants flew in both manual and autopilot tracking conditions. The autopilot significantly reduced both workload (indexed by heart rate variability) and response time to the attitude failure. Response times to the navigation dial event, but not to the attitude event, significantly increased with time regardless of automation level. Results show that vigilance declines during simulated flight, and automation can reduce mental workload but does not eliminate the vigilance decrement.
Databáze: OpenAIRE
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