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Readability of vertically vibrating aircraft displays
Umeå University.
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Psychology.
1999 (English)In: Displays (Guildford), ISSN 0141-9382, E-ISSN 1872-7387, Vol. 20, no 1, 23-30 p.Article in journal (Refereed) Published
Abstract [en]

Vibrations pose a problem to the visual system. The vibrations in aircraft are mainly vertical and cause reading errors when the pilots read the instruments. In three experiments, reading capability was tested during vertical vibration of modern military aircraft, using symbols presented on a computer monitor. The results showed that complexity of symbols have a significant effect on the performance. The orientations of symbols were also of importance for their readability. Indexes made up of horizontally oriented lines were found to be especially difficult to read during vertical vibration. Orienting them 45° up or down improved readability in a significant way. The size of the symbols was found to be of importance especially when they were horizontally oriented.

Place, publisher, year, edition, pages
1999. Vol. 20, no 1, 23-30 p.
National Category
URN: urn:nbn:se:uu:diva-65643DOI: 10.1016/S0141-9382(98)00056-0ISI: 000079274400004OAI: oai:DiVA.org:uu-65643DiVA: diva2:93554
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2012-04-19Bibliographically approved
In thesis
1. The Use of 2D and 3D Displays in Military Settings
Open this publication in new window or tab >>The Use of 2D and 3D Displays in Military Settings
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The purpose of this thesis is to evaluate the possibilities of using 3D perspective displays in different military settings, and to illustrate the limitations of 3D displays, that is, when 2D displays are to be preferred. More specifically, this thesis explores (a) readability during vibrations, (b) perception aspects on perspective aircraft displays, and (c) the value of spatial cues in 3D air traffic displays in military settings.

The results show, for example, that vertical vibrations influence recognition performance negatively. The recognition of 2D and 3D symbols, as well as judgment of relations between symbols on a 3D display, may indeed be an arduous task. Results, further, indicate improved performance for relation judgments between objects in 3D space in dynamic rather than static scenarios in tactical indicators. In situations where perception of a direction nevertheless is problematic, enhancements like, for example, drop-lines may improve performance.

From a practical point of view the goal has been to investigate the possibility to develop and use a 3D perspective display in an airplane like JAS 39 Gripen. A general conclusion is that 3D displays indeed can be used in many situations but it is important to seriously consider any possible limitations of 3D displays. The future work should be focused on implementing and testing the tactical display in a real setting with real military pilots.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2012. 106 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences, ISSN 1652-9030 ; 76
visuell perception, 3D, displays, spatial cues
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Research subject
urn:nbn:se:uu:diva-169721 (URN)978-91-554-8290-9 (ISBN)
Public defence
2012-04-20, sal XI, Universitetshuset, Biskopsgatan 3, Uppsala, 10:15 (English)
Available from: 2012-03-29 Created: 2012-03-05 Last updated: 2012-04-19Bibliographically approved

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von Hofsten, Claes
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