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F-16C/D HUD EDU Chassis Mechanical

Technical Information

Catalogue No: C0647
Category: Head-Up Display [HUD]
Object Type: Module/Sub-Assembly/Component
Object Name: F-16C/D HUD EDU Chassis Mechanical
Part No: AE005814-01
Serial No: 0154
Manufacturer: Thales Optics
Division: Airborne Display [ADD]
Year of Manufacture: circa 1995
Dimensions: Width (mm): 0
Height (mm): 0
Depth (mm): 0
Weight (g): 0
Location: Unknown

Chassis Mechanical Assembly
Chassis Electrical Assembly AE006660-10, No. 00216


This is a chassis for the Enhanced Display Unit version of the F-16 PDU which is distinguished from its predecessor by having the two deflection circuit modules externally located on the chassis sides.
Although labelled Chassis Electrical this chassis has not been fitted with its electrical elements (motherboard and wiring), though it does have a photocell assembly (ABS - Automatic Brightness Sensor. This unit is currently on long term loan for engineering development.

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. Singapore, South Korea and Israel are the only customers for the AEU.


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 eventually successful and was fitted to the UAE Block 60 F-16 E and F models of which the UAE operate some 79 with another 30 designated Block 61 ordered as of January 2014. 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.

The EDU has clocked up sales, in addition to the UAE, so far of 251 units to Chile, Greece, Jordan, Oman, Poland and Singapore. There is also a version of this EDU design fitted with the night vision diffractive optics and both Singapore and Turkey operate this.


Click to enlarge