Development of high angle of attack flying qualities criteria using ground-based manned simulators

It is noted that the development of high-AOA (angle-of-attack) flying-qualities criteria using ground-based manned simulators presents unique problems for the flying-qualities engineer. These problems include modified aircraft motion to pilot inputs; an expanded motion environment at the pilot´s station; the need for modified controllers and different types of command systems; and realistic flying qualities tasks. The modified aircraft motion to pilot inputs is inherent to this flight regime and it is asserted that pilot training will be required to operate the aircraft effectively. It is noted that the high-AOA motion environment will be difficult to accurately replicate in ground-based simulation and its physiological effects on the pilot need to be investigated. Novel command system types and controllers may be required to optimize aircraft performance for high-AOA maneuvering. Flying qualities tasks that allow ample evaluation time and isolate the proper axis can be developed for flying qualities evaluations. It is further noted that ground-based simulators can initially be used to develop flying qualities criteria for the high-AOA flight regime but flight testing will be needed to validate these criteria