Tóm tắt
AS its name implies this type of display presents information to the pilot in his normal head‐up field of view. The display is focused at infinity to appear superimposed upon the pilot's view ahead of the aircraft. The pilot need not remove his gaze from the view ahead of the aircraft in order to obtain data about the aircraft's performance. With conventional instruments there is a significant delay after the pilot realises he needs data before he can re‐adjust his eyes to obtain it. Obviously a display which enables the pilot to absorb data continuously without any conscious effort must be more efficient than a display that requires constant activity.
