Recently I received a most intriguing request: I was asked to build a self-contained, super-bright X-Y display unit with 3-inch CRT, for use in an “HUD“. Hmm…
Holographic Utterance Device?
Horizontally Unstable Doohickie?
Fortunately, I didn’t need to guess any further. As I was once an avid flight simulator enthusiast, I quickly hit upon the correct meaning: Head-Up Display. This is a mechanism that overlays instrumentation or map data onto the view looking forward from the cockpit, so that the pilot doesn’t have to look down to see this information.
Wikipedia has a great introduction
to HUDs and their history, but Mike’s Flight Deck has the definitive tome
for flight simulator enthusiasts who want to actually build
an HUD. According to Mike, the system employs various optical paraphernalia, but at the heart
of the mechanism is what lies closest to my own heart – a CRT Display
An Oscilloclock 3-inch X-Y-Z display unit, optimized for use in an HUD