Canopy Induced Displacement Evaluation

Abstract

This paper reports on the optical properties of an aircraft canopy. In this study, canopy induced target displacement is studied for nine possible eye positions. The following general trends are noted: (1) the average absolute target displacement increases as viewing height increased; (2) the range of elevation target displacement increases as viewing height increases; (3) the range of elevation target displacement increases at lower sight depression settings, independent of viewing height; and (4) there is considerable parallax between the right and left eyes at 1 inch above design eye position, but, virtually no parallax 1 inch below design eye position. This study concluded that pilot interface with aircraft optics should be evaluated early in the system acquisition process.