F-16C/D HUD Combiner Assembly

Technical Information

Catalogue No: C0281
Category: Head-Up Display [HUD]
Object Type: Module/Sub-Assembly/Component
Object Name: F-16C/D HUD Combiner Assembly
Part No: K6111 Assy 017669
Serial No: HU0011
Manufacturer: Pilkington PE
Division: Unknown
Platform(s): F-16C/D Fighting Falcon 
Year of Manufacture: Unknown
Dimensions:
Width (mm):
165 
Height (mm):
260 
Depth (mm):
50 
Weight (g):
1,710 
Location: Archive Object Store
Inscription(s):

K6111ASSY017669
HU0011
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Clean Glass with FED SPEC O-E-760 Alcohol & Lens Tissue

Notes:

The pilot views the outside world through the Combiner Glass and the HUD optical relay superimposes the symbology 1:1 with the outside world. This Combiner has a neutral density coating giving a nominal 70% transmission and 30% reflection. The curved support structure is designed to protect the pilot if a bird strike deforms the polycarbonate canopy and the Combiner glass itself is designed and tested such that if it does shatter and does not harm the pilot.

The F-16C (single seat) and F-16D (two seat) variants entered production in 1984. The first C/D version was the Block 25 with improved cockpit avionics and radar which added all-weather capability with Beyond Visual Range (BVR) AIM-7 and AIM-120 air-air missiles. Blocks 30/32, 40/42 and 50/52 were later C/D versions. The LANTIRN Diffractive optics HUD was designed for the new aircraft but development was delayed by the complexity of the manufacturing problems. As an interim the Company offered a wide angle conventional optic design.

The HUD PDU has both a raster and a cursive capability with the first application of ‘cursive-in-flyback’ in which the same amount of symbology as in the daytime high brightness mode can be drawn on the CRT using the raster's field flyback period of the Night mode. The system accuracy was enhanced by the ability to apply corrections for the windshield. The optics provides a 25° Total Field of View and a 20° by 15° Instantaneous Field of View which was the maximum that could be achieved within the limitations of the exit lens design and the large distance between the pilot and the HUD, necessitated by the reclined high ‘G’ seat.

The Processor/Symbol Generator in the HUD Electronics Unit (EU) uses the MIL-STD-1553 databus architecture, the MIL-STD-1750 processor and the MIL-STD-1589B Jovial J73 programming language. This was the first time that all three Standards had been used together. The HUD EU has comprehensive video mixing and scan conversion and self-contained weapon aiming capability.

The initial order was placed in 1984 and was valued at nearly $50 million (then about £30 million) to cover both development and production. Over 2300 HUD’s were delivered for the F-16 and the system has been the basis of equipment supplied for other programmes such as for the A-7D/K and F-5 adding another 1500 units to the family. In 1985 the F-16C/D design won the Queen’s Award for Technology Improvements to aircraft Head Up Display systems for the Company.

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