Task Analysis of the CH-47D Mission and Decision Rules for Developing a CH-47DWorkload Prediction Model. Volume 1. Summary Report

摘要

A mission scenario was used to conduct a comprehensive task analysis for CH-47Doperations. The analysis used a top-down approach to identify the phases, functions, and tasks for the mission. Nine phases, 37 segments, 66 functions, and 154 tasks were identified. The crewmember performing each task was identified and estimates of the sensory, cognitive, and psychomotor workload associated with the tasks were derived. Estimates of the task times also were derived. The mission/task/workload analysis data were used to develop a computer model of workload for CH-47D crewmembers. The model used a bottom-up approach to build mission functions from tasks and mission segments from functions. Decisions rules were written to specify the procedure for combining the tasks into functions and the functions into segments. The model permitted an analysis of total workload experienced by each crewmember in the performance of both sequential and concurrent tasks. Keywords: Mission analysis, Task analysis, Man-machine interface, Aviator workload. (kr)