Operator Workload in the UH-60A Black Hawk: Crew Results vs. Tawl Model Predictions

Iavecchia, Helene P.; Linton, Paul M.; Bittner, Alvah C.; Byers, James C.

doi:10.1177/154193128903302027

Cited by 7 publications

(6 citation statements)

References 1 publication

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“…They also observed a correlation of 0.57 between the model's predictions and subjects' workload ratings. lavecchia, Linton, Bittner, and Byers (1989) reported a correlation of 0.82 between the Task AnalysislWorkload (TAWL) simulation model's predictions and the ratings of Black Hawk helicopter pilots performing a simulated resupply mission. Despite these successes, the labor-intensive nature of taskanalytic techniques is likely to limit their application.…”

Section: Introductionmentioning

confidence: 96%

Using the Subjective Workload Dominance (SWORD) Technique for Projective Workload Assessment

1991

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The present study examined the utility of the Subjective Workload Dominance (SWORD) technique as a projective workload tool. Two groups predicted the workload associated with using six possible head-up display (HUD) formats. One group contained college students inexperienced with HUDs, and the second group contained operational F-16 pilots who commonly used HUD displays but were familiar with only one format. The projective ratings from these groups were correlated with retrospective ratings from a group of operational F-16 pilots that had experienced all six formats in a simulator study. The correlation between the projective and retrospective groups of pilots was highly positive, and both groups' ratings correlated positively with the simulator study performance. In contrast, the student ratings were not significantly correlated with the ratings from either of the other groups, nor was performance. The results support the utility of the SWORD technique as a projective tool, provided a group of subject matter experts is available to make the required judgments.

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Section: Introductionmentioning

confidence: 96%

Using the Subjective Workload Dominance (SWORD) Technique for Projective Workload Assessment

1991

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“…Computer support has been developed to perform all of the data base management and model execution functions needed to use the methodology called the TAWL Operator Simulation System (TOSS). Iavecchia, Linton, Bittner, and Byers (1989) have conducted an initial validation of the TAWL methodology.…”

Section: Introductionmentioning

confidence: 99%

Task Analysis/Workload (TAWL): A Methodology for Predicting Operator Workload

Hamilton

Bierbaum

1990

Proceedings of the Human Factors Society Annual Meeting

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The Task Analysis/Workload (TAWL) methodology was developed to predict operator workload using the information from a task analysis of the system. In addition, the TAWL Operator Simulation System (TOSS) was developed to perform all the data base management and model execution functions needed to use the methodology. A TAWL workload prediction model is developed in three stages: task/workload analysis, model construction, and model execution. The methodology assumes that demand on human attention (workload) can be approximated by modeling the separate cognitive, psychomotor, and sensory requirements of all tasks being performed by the operator. The model produces half-second time lines annotated by task names and workload estimates. The output of the models can be graphed or read by statistical software for further evaluation. TAWL models are useful to system designers as aids in task allocation between crewmembers, machine and crewmembers, and workload components, as well as across time. In addition, the information generated by the models can be used to evaluate the system's manning and training requirements. Currently, the Army is sponsoring the development of TAWL workload prediction models for modified versions of the AH-64A (Apache), CH-47 (Chinook), and UH-60A (Black Hawk) aircraft.

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“…Overall Workload Iavecchia, Linton, Bittner, and Byers (1989) conducted research to determine the validity of the UH-60A workload prediction model.…”

Section: Subsystem Overloadmentioning

confidence: 99%

“…During the present workload analysis of the UH-60A, TOSS was used to implement a regression equation derived from the data reported by Iavecchia et al (1989), to scale the OW predicted by TAWL into the 0-100 range used for OW. For all mission segments described in this report, TOSS computed the predicted OW using the following equation:…”

Section: Subsystem Overloadmentioning

confidence: 99%

Task Analysis and Workload Prediction Model of the MH-60K Mission and a Comparison with UH-60A Workload Predictions. Volume 1. Summary Report

Bierbaum¹,

Hamilton²

1990

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Operator Workload in the UH-60A Black Hawk: Crew Results vs. Tawl Model Predictions

Cited by 7 publications

References 1 publication

Using the Subjective Workload Dominance (SWORD) Technique for Projective Workload Assessment

Using the Subjective Workload Dominance (SWORD) Technique for Projective Workload Assessment

Task Analysis/Workload (TAWL): A Methodology for Predicting Operator Workload

Task Analysis and Workload Prediction Model of the MH-60K Mission and a Comparison with UH-60A Workload Predictions. Volume 1. Summary Report

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