![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
The objectives of this study were to examine the combination effects of the attitude directional indicator (ADI) formats and the 2 reference frames (moving horizon [MH] and moving aircraft [MA]) on unusual attitude recovery performance. Three ADI display formats were examined: (a) conventional MH; (b) perspective-view aircraft symbol (PAS), which replaced the conventional miniature aircraft symbol with a pictorial moving aircraft symbol; and (c) command, which presented the appropriate direction for recovery using the pitch or roll arrow. Twenty-two participants (10 unmanned aircraft operators, 12 nonoperators) performed a series of trials in a low-fidelity ADI simulator in which they attempted to recover from a series of unusual attitudes. The results revealed that the combination effect differed according to display format. The command display expedited initiation of the roll input regardless of reference frame. The conventional display showed better performance in the MA reference frame. The PAS display improved the total recovery time and pitch input time of nonoperator participants in the MA reference frame.
ACKNOWLEDGMENT
This article was partially supported by a Korea University Grant (K0822361).