Working both ends of the tow rope: A hierarchical task analysis of glider aerotow operations

Abstract

This research addresses the question “who does what?” in contemporary aerotow operations. This question is answered using a qualitative approach called the hierarchical task analysis, where results are presented in comprehensively branched graphical form. For this, 123 tasks along with the stakeholders performing them are identified. Additionally, 23 prerequisites for tasks to be performed and relationships between these artifacts are determined. Results are intended to inform automation design for aerotowing in future research. Validity of the results is increased by involving a panel of subject matter experts on the topics of aerotowing, flight control and aircraft design. To the best of the authors’ knowledge this results in the first comprehensive overview of aerotowing tasks that is suitable for informing automation design.