HEAD-UP DISPLAY

HEAD-UP DISPLAYS (HUDS) AE OPTICAL DISPLAYS WHICH PRESENT FLIGHT INFORMATION IN THE PILOTS FORWARD VIEW. THESE DISPLAYS ARE OUTGROWTHS OF REFLECTING GUN OR BOMBSIGHTS. ALTHOUGH THEY WERE DESIGNED FOR WEAPON DELIVERY, PILOTS FIND THEM QUITE USEFUL AS PRIMARY FLIGHT REFERENCES. RECENT SURVEYS, HOWEVER, REVEAL CERTAIN PROBLEMS. BASED ON REACTIONS, PRESENT DAY HUD SPECIFICATIONS DO AN INADEQUATE JOB OF CONTROLLING THE BRIGHTNESS AND LOCATION OF THE DESIGN EYE. THEY ALSO DO NOT ADEQUATELY SPECIFY THE DYNAMIC MOTION OF THE SYMBOLS--THE CONTROL LAWS, FURTHER, NO TWO HUDS HAVE THE SAME SET OF SYMBOLS. BE CAUSED BY A LACK OF A HUD DATA BASE OR EVEN CONSISTENT SPECIFICATIONS. THIS PROPOSAL RECOMMENDS ESTABLISHING SUCH A DATA BASE OR SOURCE DOCUMENT FOR FUTURE HUDS. FURTHER, SINCE THE CONTROL LAWS ARE SO IMPORTANT, AND ARE PRESENTLY UNSPECIFIED, THE PROPOSED PROGRAM WILL SEEK TO DETERMINE IF THERE IS A CORRELATION BETWEEN "GOOD" HUDS AND "BAD" HUDS. THIS WILL BE DONE USING FLIGHT TEST DATA ALREADY AVAILABLE.