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originally posted by: TheScale
a reply to: Zaphod58
there really isnt any difference between a hud and a display mounted in the helmet. the only difference is the hud goes where u move your head. its still a heads up display just projected into the interior lens on the helmet itself.
The infrared (IR) homing guidance section performs the tracking and guidance functions. The AIM-9X is a system-guided missile employing a mid-wave IR FPA seeker. The seeker, equipped with High Off-Boresight (HOBS), can be used with a helmet-mounted sight for wider attack envelope. It uses passive infrared (IR) energy for target acquisition and tracking. After the launch, the seeker follows the heat signature from the engines of the hostile aircraft.
When employed with a Helmet Mounted Sight or display, the AIM-9X Block I can hit targets as much as 90 degrees of bore-sight and can lock onto targets at much farther ranges under more challenging conditions that its predecessor. Even without a HMS, the AIM-9X is a huge leap in capability and has a much wider angle bore-sight view than the AIM-9M it replaces. It is also much more maintenance friendly.