Head-up display symbology for unusual attitude recovery

One purpose of head-up displays (HUDs) in modern fighter aircraft is to provide the pilot with attitude information while allowing the pilot to focus attention outside the cockpit. However, current attitude symbology is deficient in its ability to answer important pilot questions about unusual-attitude recovery. Results of a study to evaluate several advanced symbology concepts designed to resolve these deficiencies are reported. The results indicate that the inclusion of multicolor coding and a fixed point of rotation for the dynamic pitch-ladder symbology results in better unusual-attitude recovery