Fig. 1

Combining the classical aircraft HMD interface with flight simulation software FlightGear, determined the flight parameters and shape of our HMD interface element and designed four different HMD interfaces. The only difference between interface A, B lies in the location of azimuth icon. The only difference between interface C, D is the location of icon “M 2.0”, “AGL 7”, “G 1.0”, “GS: 35kts