Evaluation of Several Secondary Tasks in the Determination of Permissible Time Delays in Simulator Visual and Motion Cues

摘要

An exploratory study has been made to examine the effect of secondary tasks in determining permissible time delays in visual-motion simulation of a pursuit tracking task. This study uses a single subject, a single set of aircraft handling qualities, and a single motion condition in tracking a target aircraft that oscillates sinusoidally in altitude. In addition to the basic simulator delays the results indicate that the permissible time delay is about 250 msec for either a tapping task, an adding task, or an audio task and is approximately 125 msec less than when no secondary task is involved. The magnitudes of the primary task performance measures, however, differ only for the tapping task. A power spectral density analysis basically confirms the results obtained by comparing the root-mean-square performance measures. For all three secondary tasks, the total pilot workload was quite high.