|Category:||Head-Down Display [HDD]|
|Object Type:||Display Unit|
|Object Name:||Tornado Enhanced Head-Down Display (EHDD)|
|Division:||Airborne Display [ADD]|
|Year of Manufacture:||circa 1983|
|Location:||Archive Object Store|
The EHDD was fitted to the pilot's cockpit of the Air Defence Version of the Tornado. On the ADV the ground mapping radar display is not required, since all radar displays are basically synthetic. The pilot has the EHDD which is an extension of the Navigator's TV Tab display system.This gives the pilot full access to all data available to the Navigator and in addition provides head-down attack information and steering for interception.
The unit has three push-buttons and a rotary switch for mode selection and a rotary Brightness control.
The EHDD uses a high brightness green monochrome Cathode Ray Tube made by Rank Brimar with a contrast enhancement filter. The Waveform Generator produces synthetic symbols by a process called a time-shared digital technique. This gives high accuracy and avoids the ‘staircase’ effect found in raster generated graphics. This unit has Serial Number 012 so would have been built for the Tornado ADV somewhere between the first flight of the aircraft in 1979 and entry into service in 1986.
This is a Production EHDD, one of the early units at -01 configuration and variants certainly went up to -20.