USAF Flying Qualities Requirements for a STOL (Short Takeoff and Landing) Transport

Evaluation of Flying Qualities and Guidance Displays for an Advanced Tilt-wing STOL Transport Aircraft in Final Approach and Landing

“…Existing military and civil guidance for control system design is insufficient for these operations, particularly for a configuration with reduced static stability and advanced control augmentation. Most information that exists comes from STOL flight and simulation experience 30 or more years in the past that relates to aircraft configurations with conventional aerodynamic surfaces, mechanical controls, simple rate damper type stability augmentation systems, and basic instrument displays 2,3 . Modern designs make use of highly augmented digital fly-by-wire controls and sophisticated displays, and the basic aerodynamic configurations tend to have relaxed static stability with minimal or no conventional tail surfaces.…”