HUD Electronics Unit

Technical Information

Catalogue No: C0326
Category: Head-Up Display [HUD]
Object Type: Signal/Data Processor
Object Name: HUD Electronics Unit
Part No: 51-026-01
Serial No: 27489C0261
Manufacturer: Elliott Bros
Division: Unknown
Platform(s): F-16A/B Fighting Falcon 
Year of Manufacture: Unknown
Dimensions:
Width (mm):
190 
Height (mm):
190 
Depth (mm):
460 
Weight (g):
Location: Archive Object Store
Inscription(s):

EU, HUD Set
Contract F33657-75-C-0310
Dsgn. Act. 27489
PN 51-026-01
Mfr. 27489
NSN

Notes:

The F-16 Electronics Unit was based on a powerful general purpose computer using MSI TTL technology. It contains a MIL-STD-1553 data bus interface, processor and symbol generator. Data can be received in analogue form but the digital Databus significantly reduces the number of data lines. With progressively smaller airframes finding space for the traditional bundles of analogue cables and their bulky connectors was becoming a problem so the new system links HUD, attack radar, fire control computer and the inertial navigation system all through the 1553 data-bus. Development of small RISC processors had continued within ADD and FARL and the F-16A/B emerged with a solid state 16K 16-bit store in what was basically a 12/16 RISC implementation. Eventually the memory was increased to 32k.
The Electronics Unit is fitted with an ELDEC Power Supply Unit slab, type: 4-174-02, Ser No: 104.

In January 1972 the Lightweight Fighter Programme asked for designs from several American manufacturers. In January 1975 General Dynamics was pronounced the winner with the YF-16. Since its small beginning with an initial USAF order for 650 aircraft, the F-16 has become one of the largest and most successful military aircraft in aviation history. At least 23 countries have purchased the F-16 in various forms.

The HUD system, which at one point seems to have been called the HUDSIGHT by the Company, consisted of a Pilot’s Display Unit (PDU), an Electronics Unit (EU) and a Rate Sensor Unit (RSU). General Dynamics however called it the Fire Control Sight System (FCSS). The F-16A/B was an international programme with a requirement for offset. The HUD PDU and EU were both built in Rochester and at Atlanta in Georgia, de Oude Delft in the Netherlands also built the PDU and Kongsberg Vapenfabrikk in Norway also built the EU. The Rochester site was responsible for the design, production and supply of complete HUD systems.

The legend "27489" on the Ident labels of many of the boxes is a defunct CAGE code for the Rochester site of Elliott Bros (London) Ltd.

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