Tornado Enhanced Head-Down Display (EHDD)

Technical Information

Catalogue No: C0066
Category: Head-Down Display [HDD]
Object Type: Display Unit
Object Name: Tornado Enhanced Head-Down Display (EHDD)
Part No: 79-059-01
Serial No: 012
Manufacturer: Marconi-Elliott Avionics
Division: Airborne Display [ADD]
Platform(s): Tornado 
Year of Manufacture: circa 1983
Dimensions:
Width (mm):
170 
Height (mm):
193 
Depth (mm):
410 
Weight (g):
8,160 
Location: Archive Object Store
Inscription(s):

Marconi-Elliott Avionics
EHDD Unit
Part 79-059-01
Ser 012
NSN
Code K0656

Notes:

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.

Click to enlarge