Bewertung von Benutzerschnittstellen für Cockpits hochagiler Flugzeuge

Armin Eichinger
For the design and evaluation of man-machine-systems in highly volatile work domains, influences of context and physical as well as mental user prerequisites and aptitudes have to be taken into account. In the cockpits of highly agile aircraft, informatory demanding tasks that are dealt with concurrently under time pressure, have a great influence on performance. To lay the foundation for evaluating controls of these cockpits, informatory demand imposed on pilots was analyzed and documented.
more » ... and documented. Requirements for representing relevant context attributes experimentally are formulated on that ground. Informatory context is represented by standardized secondary tasks in two levels of difficulty. These tasks stand for visual, cognitive, and motoric information processing qualities. Task analysis shows peak demands for these qualities. In multiple task scenarios, focus of attention is manipulated in order to study performance for different distributions of resources. An additional secondary task was specifically designed to conform to realistic task demands. For this realistic task difficulty and prioritization were also manipulated. Experimental representation of relevant context attributes generates manifold influences on performance and workload indicators that are discussed in detail; quality and difficulty of informatory demand especially influence the criteria measured. Performance comparisons between touchscreen and trackball as possible cockpit controls are the backbone of the study. Input by touchscreen is faster in all experimental conditions. This speed advantage is not accompanied by a higher error rate. Subjective workload is lower for input by touchscreen than by trackball.
doi:10.5283/epub.22754 fatcat:deanowbgxrb6vhfqhb7jsvb4tm