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Flight Crew Workload Evaluation Based on the Workload Function Distribution Method.

Yiyuan Zheng, Yanyu Lu, Yuwen Jie

    Aerospace Medicine and Human Performance
    |April 19, 2017
    PubMed
    Summary
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    The Workload Function Distribution Method accurately reflects flight crew workload, especially with three or more functions. Effective proportions are more precise indicators of workload than overall proportions.

    Area of Science:

    • Aviation Psychology
    • Human Factors Engineering
    • Aerospace Medicine

    Background:

    • Establishing minimum flight crew workload is crucial for flight deck safety and efficiency.
    • Existing workload measures (subjective scales, task performance, psychophysiological) have limitations.
    • The Workload Function Distribution Method was proposed to provide a more specific and comprehensive flight environment workload assessment.

    Purpose of the Study:

    • To evaluate the effectiveness of the Workload Function Distribution Method in assessing flight crew workload.
    • To compare the Workload Function Distribution Method with the NASA-TLX scale across different workload function conditions.
    • To determine the optimal number of workload functions for accurate workload evaluation.

    Main Methods:

    Related Experiment Videos

  • Analysis of workload function numbers under different conditions (one to six functions).
  • Evaluation of both overall and effective proportions of workload functions.
  • Utilized three types of approach tasks and the NASA-TLX scale for comparative analysis.

    • Main Results:

    • Workload Function Distribution Method with three or more functions aligned with NASA-TLX results.
    • One- and two-function conditions did not yield comparable results to NASA-TLX.
    • Effective proportions of workload functions showed significant differences, unlike overall proportions, especially in multi-function conditions.

    Conclusions:

    • The Workload Function Distribution Method, particularly with three to six functions, is a valid approach for flight crew workload evaluation.
    • Effective proportions provide a more precise workload indication than overall proportions, especially in complex scenarios.
    • This method offers a more direct compliance with airworthiness regulations for workload assessment.