« Previous Next »

F-16 LANTIRN HUD PDU Chassis & Optics

Technical Information

Catalogue No: C0788
Category: Head-Up Display [HUD]
Object Type: Display Unit
Object Name: F-16 LANTIRN HUD PDU Chassis & Optics
Part No: 229-049508-01
Serial No: CGH001
Manufacturer: Pilkington Optronics
Division: Unknown
Platform(s): F-16C/D Fighting Falcon 
Year of Manufacture: Unknown
Dimensions:
Width (mm):
204 
Height (mm):
355 
Depth (mm):
795 
Weight (g):
17,300 
Location: Archive Object Store
Inscription(s):

Display Unit, HUD Set
Contract C G H
Dsgn. Act K0656
PN 229-049508-01
Mfr K0656
NSN
Ser. No. C G H 001
────────────────
[optical module]
Part No 2501-00047
Serial No DOH00014
Mfr Code K6111
NSN
Mfr Part No 038674
Contract No F33657-82-C-2038
────────────────
[chassis]
CSTG 229-039459
1M215

Notes:

The Company developed a diffractive optical system The Contract is marked as CGH. The Chassis and Optics are from different units.229-33981-01 Ser. No. 0007. Unit is fitted with a sunshield above the top Combiner. The Chassis Contract suggests that this unit was a development chassis for the Eurofighter CGH Optics.

GEC-Marconi Avionics began development of diffractive (holographic) optical elements in the late 70’s building on the work of the Marconi Research Centre at Great Baddow under Dr Firth. A clean room was opened at Rochester in 1987 to carry out research and to manufacture holographic elements. It has an optical bench going down to bedrock to minimise the vibrations from the nearby motorway!  

The Company developed a diffractive optical system using three combiner elements which gave a large Head Motion Box. In 1980 Marconi won the contract to supply the HUD for the USAF LANTIRN programme of which 932 were manufactured for the USAF.  The LANTIRN programme links a Forward Looking Infra Red system to the HUD to present a TV picture at night of the outside world. The slight loss of transmission through the three combiner elements was not a problem in night operation although not ideal for Air-to-Air.

A raster display alone cannot give adequate symbol resolution and ensure that the symbology is always visible over the brightest shade of raster.  A technique of drawing all the symbology cursively in the field blank period of the video was developed which meant drawing nearly ten times as fast. Suddenly flying by night at low level was possible.  The HUD gives a 30 degree field of view in azimuth; essential for looking into turns and a 20 degree vertical view. The HUD was known as the DHUD for Diffractive HUD or WARHUD for Wide Angle Raster HUD. 

Click to enlarge Click to enlarge Click to enlarge