Comparison of Two Visual Symbology Sets in Rotary-Wing Aircraft

Two sets of visual symbology in conjunction with two display types (helmet mounted and panel mounted) were examined for their usability in maintaining flight performance within a simulated degraded visual environment. Eight rated Army Aviators completed a series of flights using the two symbology sets with each display type. Flight performance data was collected and used to assess performance resulting from symbology and display used. Overall, the assessment found one symbology set to result in better performance across several phases of flight and no significant differences due to display type, although a few interactions between symbol set and display type are noted.