Which of the following is not true with respect to HMD (Helmet Mounted Display)?(a) The flight parameters are displayed in the visor of the helmet(b) HMD comprises of collimated display(c) Using HMD the pilot has a FOV (Field OF Vision) of 360° without moving his head(d) The flight parameters are displayed in the pilot’s line of sightThe question was asked in final exam.My doubt stems from Helmet Mounted Displays in portion Displays and Man-Machine Interaction of Avionics

Which of the following is not true with respect to HMD (Helmet Mounted

1.	Which of the following is not true with respect to HMD (Helmet Mounted Display)?(a) The flight parameters are displayed in the visor of the helmet(b) HMD comprises of collimated display(c) Using HMD the pilot has a FOV (Field OF Vision) of 360° without moving his head(d) The flight parameters are displayed in the pilot’s line of sightThe question was asked in final exam.My doubt stems from Helmet Mounted Displays in portion Displays and Man-Machine Interaction of Avionics
Answer» Right answer is (c) Using HMD the PILOT has a FOV (Field OF Vision) of 360° without moving his head Easy explanation: The FOV of an HMD is 360° in the sense that the pilot can look around(by moving his head) in all direction and still VIEW the flight parameters in his line of sight. If the pilot does not MOVE his head the FOV the HMD provides ranges from35° to 50° depending UPON the type of aircraft and its role.

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