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Abstract The history of the head-up display dates back to World War II Since then the head-up display has gone through a variety of changes and upgrades Both the Airline Pilots Association and the Airline industry pursued the development of the head-up display because of the advantages it offers As with any new technology the head-up display has advantages and shortfalls Education however is the key to fully understanding new technology including the head-up display With proper cockpit resource management training the advantages the head-up displays bring to aviation result in the safest approach to flying Head-up display HUD A Safer Approach The origin of the head-up display HUD a modern miniature instrument panel was the reflective gun sight technology of World War II This technology Ellis explained used collimated displays reflected from a semi-transparent glass which evolved into several different types of head-up displays such as the traditional head-up display reflective head-up display and the GA head-up display Ellis 2000 p 1 This evolution of the head-up display from World War II shows how technological processes economics and safety can all interact with each other effectively to create a safer approach to flying Hawkins 2000 p 252 The traditional head-up display uses a refractive optical design with combining glass to superimpose the head-up display symbols and the pilots view of the real world Ellis 2000 p2 In this kind of system the crewmember views the image on a semi-transparent combining glass after a set of rays are produced from the image passing through a lens assembly Ellis 2000 p 2 Compared to head-up displays with flat combiners the reflective head-up display has the ability of a larger instantaneous field-of-view when used with optical power This ability reduces the need for crewmembers head motion in order to view the symbology on the head-up display Ellis 2000 p3 According to Ellis the GA head-up display uses a single powered optical element and a curved ellipsoidal
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