« Previous Next »

F-16A/B HUD Display Unit (partial)

Technical Information

Catalogue No: C1033
Category: Head-Up Display [HUD]
Object Type: Display Unit
Object Name: F-16A/B HUD Display Unit (partial)
Part No: 229-005783-01
Serial No: 006
Manufacturer: GEC Avionics
Division: Unknown
Platform(s): F-16A/B Fighting Falcon 
Year of Manufacture: Unknown
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Mezzanine Store

[on optics housing]
Part No. 27489 SOCN229-005810
Mfr. Code K6111
Mfr. Part No. 014683
Contract No. F33657-75-C-031
PPE Serial No. ???000?
[inside optics]
27489 Assy
Chassis Wired
Ser No 006


This is a stripped down Pilots Display Unit Chassis with the lower part of the Optical Module attached. The open Optical Module shows the fold mirror and the Standby Sight blind and mechanism. C0986 is the top part of the Optical Module. The optical module of this object does not have its large exit lens and this allows a fairly unobstructed view of the internal elements of this type of HUD optics.
It is fitted with two controls: (A) scrolls an attenuating blind across the optical path to reduce the display's brightness for night use and (B) depresses the angle of the stand-by sight reticle (this is a vertical scale that forms a very basic backup to the electronic display).
The two flexible pipes (C) either side of the fold-mirror (D) are fibre-optic bundles that feed light from a light source (E) to the standby reticle image blocks (F), one on each side of the injection optics (G). Rotating the depression control (B) raises or lowers both these blocks (F) via the shafts and gears that can be seen. "27489" is a defunct CAGE code for the Rochester site.

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-16 A/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 Vapenfabrik 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.    

Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge