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Toward a visual flow integrated display format to combat pilot spatial disorientation
Swedish Defence Research Agency, FOI, Sweden.
2010 (English)In: The International journal of aviation psychology, ISSN 1050-8414, Vol. 20, no 1, 1-24 p.Article in journal (Refereed) Published
Abstract [en]

Aiming to ascertain basic display guidelines for improved support of pilot spatial orientation (SO), the visual resonance with the perceptual mechanism for SO was explored in 2 experiments. Postural responses indicated the efficiency of visual cues to control proprioception and equilibrium sense. A display design is suggested that integrates the results with the concepts for an operational head-up display symbology. By means of improved perception of integrated pitch, roll, and yaw information and resonance of synthetic visual flow with the SO mechanism, the design may in the future contribute to combatting pilot spatial disorientation.

Place, publisher, year, edition, pages
2010. Vol. 20, no 1, 1-24 p.
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:kau:diva-28861DOI: 10.1080/10508410903415922OAI: oai:DiVA.org:kau-28861DiVA: diva2:645164
Available from: 2013-09-03 Created: 2013-09-03 Last updated: 2013-11-13Bibliographically approved
In thesis
1. Visual flow display for pilot spatial orientation
Open this publication in new window or tab >>Visual flow display for pilot spatial orientation
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Pilot spatial disorientation (SD) is a significant cause of incidents and fatal accidents in aviation. The pilot is susceptible to SD especially in low visibility when the visual system is deprived of information from outside the cockpit. This thesis presents the notion of visual flow displays as enhancement of symbology on flight displays primarily in low visibility for improved support of the pilot’s spatial orientation (SO) and control actions.

In Studies I and II, synthetic visual flow of forward ego-motion was presented on displays and postural responses were used as measures of display effectiveness in determining SO. The visual flow significantly affected SO, and although the increased stimulation of the visual periphery from a width of 45° to about 105° increased the effects there was no further effect at a width of about 150° (Studies I and II). Studies I and II also showed that omitting 20°- or 30°-wide central fields of view from the visual flow either reduced or not reduced the effects. Further, although inconclusive, Study II may indicate that horizon symbology in central visual field may enhance the effects of peripheral visual flow. The appropriate integration of peripheral visual flow with the head-up display symbology of the Gripen aircraft was presented.

Acceleration in a human centrifuge was used in Study III to investigate the effects of synthetic visual flow on the primarily vestibular-dependent somatogravic illusion of pitch-up. Two experiments revealed a reduced illusion with the visual flow. The results of Experiment 2 showed the visual flow scene not only reduced the illusion compared with a darkness condition but also compared with the visual scene without visual flow. Thus, similar to the main findings of Studies I and II, synthetic visual flow can significantly affect SO and supports the visually dependent SO system in an essential manner.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2010. 110 p.
Series
, Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences, ISSN 1652-9030 ; 53
Keyword
Optic flow, visual flow, peripheral vision, spatial orientation, spatial disorientation, postural control, somatogravic illusion, human centrifuge, flight displays, head-up display, head-mounted display
National Category
Psychology
Research subject
Psychology
Identifiers
urn:nbn:se:kau:diva-28863 (URN)978-91-554-7684-7 (ISBN)
Public defence
2010-01-29, Uppsala, 14:42 (English)
Opponent
Supervisors
Available from: 2013-09-04 Created: 2013-09-03 Last updated: 2013-09-04Bibliographically approved

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