ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL FORT RUCKER United States
Spatial disorientation SD is a common cause of human-error-related aircraft mishaps, especially during flight within degraded visual environments. Aviation accident investigators often conduct qualitative perceptual analyses of mishaps when spatial disorientation is inferred as a cause. We have developed a quantitative perceptual model of human spatial orientation and have employed it to evaluate data from a variety of acceleration situations, in order to predict the self-orientation and motion perceptions a person will experience when subjected to various accelerations. The model was able to produce successful simulations of moment-by-moment orientation and self-motion perception data from a variety of acceleration situations. The model also allows for comparison with the outputs of other published models. The features and performance of our model are described in this report. The model has potential applications for aviation modeling, simulation, and human balance maintenance.