Design and Evaluation of a Haptic Display for Flight Envelope Protection Systems

This paper describes the design and initial evaluation of a haptic display that is aimed to complement a `hard’ flight envelope protection system. The evaluation mainly focused on usability of the presented haptic cues, and on the handling qualities of the stick with active feedback. Results are presented for two evaluations, concerning stall protection feedback and load factor protection feedback respectively. They show that while subjects are positive about the added information cue, and are able to correctly identify limiting actions, they are not consistently able to identify changes in the aircraft’s condition