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A-7 TRAM HUD Control Panel

Technical Information

Catalogue No: C0299
Category: Head-Up Display [HUD]
Object Type: Control/Data Entry
Object Name: A-7 TRAM HUD Control Panel
Part No: 8701-00096-01
Serial No: 007
Manufacturer: Elliott Automation
Division: Airborne Display [ADD]
Platform(s): A-7 Corsair
Year of Manufacture: circa 1974
Dimensions: Width (mm): 140
Height (mm): 130
Depth (mm): 50
Weight (g): 310
Location: Rack RAA13 (HUD DU Parts) [Mezzanine Store]

27489 Assy
Panel Control
S.No 007


The world’s first raster HUD system was developed by Marconi-Elliott Avionics in 1973 for the A-7 Corsair. The system was called TRAM (Target Recognition Attack Multisensor) and electronically combined the display of a low light level or infra-red sensor in the HUD system with the HUD symbols such that the pilot was given night vision. Another application was to display a radar display.

Symbology was added to the raster by means of a complex dual vidicon scan converter CRT which required a large number of preset adjustments. The HUD operated in a normal high brightness symbology mode in daylight with a raster display at night thus providing a 24 hour capability. The FLIR in the A-7 system had a zoom capability of about 11:1 and was used in identification of target ships from medium altitude. Around 65 of these TRAM systems were made and they saw service in Vietnam.

This control panel has rotary controls for the FLIR (Infra Red Sensor), but it is not identical to that fitted to the TRAM Head Up Display C0034 which has a switch in this position.

"27489" is a defunct CAGE code for the Rochester site.

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