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F-16C/D HUD Advanced Electronics Unit (space/mass/thermal model)

Technical Information

Catalogue No: C1626
Category: Head-Up Display [HUD]
Object Type: Model
Object Name: F-16C/D HUD Advanced Electronics Unit (space/mass/thermal model)
Part No: 51-109-01
Serial No: 00002
Manufacturer: GEC Avionics
Division: Airborne Display [ADD]
Platform(s): F-16C/D Fighting Falcon
Year of Manufacture: circa 1995
Dimensions: Width (mm): 190
Height (mm): 180
Depth (mm): 380
Weight (g): 8,120
Location: Rack RAA05 [Main Store]

Advanced Electronics Unit
Contract ------
PN 51-109-01
Dsgn Act K0656
Mfr K0656
NSN ------
Ser. No. 00002
[paper label]


This unit is a non-functioning version of the Advanced EU for the F-16 HUD that was used for space, mass, centre-of-gravity and/or thermal evaluation in the preliminary stages of product development.

The RAA contains a number of models of equipment and aircraft. The equipment models were used as a marketing aid and often to ensure that the production unit will fit in the space; this was particularly true for Head Up Displays. Such equipment models will have minimal or no functionality. Models might  just be used as weighted units or as cockpit lighting evaluation units. The HUD used on the YF-16 was of the correct weight and envelope but only mounted the Spin 'chute button (a feature only required for the early test flights). Many of these models were made by professional model makers from the original drawings and could be quite expensive; alternatively the real hardware would be used.

The aircraft models range from the simple small scale kits to quite large display items. The large model aircraft were often a marketing tool from places like Airbus or Boeing but may be found in Boardrooms or Reception areas wheras the small models may be given as a visitor handout. Those models made from kits have largely been brought in from home but are useful to illustrate the platform alongside the equipment. The large models will be hugely expensive.

In the mid-90s the Company developed a variant of the F-16C/D HUD called the Enhanced Display Unit. It was intended primarily to reduce the cost of the F-16C/D Pilot’s Display Unit both in material and maintenance.

The PDU chassis was re-jigged such that two Deflection circuit modules fitted onto the outside walls and the Video Card lay flat inside., The Combiner was changed to have a dielectric coating (Vanadium Oxide) to improve the luminance and the CRT phosphor was also changed to P53 to allow it to be driven harder.

The interface remained the same so that the EDU could ‘plug and play’ with the legacy Electronics Unit or the parallel development of an Advanced Electronics Unit (AEU) or indeed Display Drivers from other suppliers, for example the multi-role GAC or Mission Computer from Raytheon. The AEU had the same form factor as the legacy F-16 C/D Electronics Unit but reduced the card count from twenty-one to just three which were mounted fore and aft rather than across the box.


As part of the F-16 Mid Life Update package it was decided to fit the Texas Instruments Modular Mission Computer (MMC) The MMC takes up 42% less volume in the aircraft, weights 55% less and consumes 37% less electrical power. Subcontractors are Terma, Nea Lindberg and Signaal. This computer consists of line-replaceable modules (LRMs) based upon several MIPSCO R3000 32-bit RISC microprocessors which run the ADA high-order language. It replaces three components, namely the computers currently in use for the Expanded Fire Control Computer (XFCC), the Head Up Display Electronics Unit (HUD EU or HUD symbol generator), and the Stores Management System's Expanded Central Interface Unit (XCIU). By 2014 1758 of these units had been fitted largely replacing the Company EU.

The EDU was  was fitted to some Block 60 F-16 E and F models. The Block 60 ‘Desert Falcon’ has been described as a lower-budget alternative to the F-35A Joint Strike Fighter and some sources claim it is a much better system than the Block 50/52 aircraft.



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