Gulfstream HUD Combiner Unit

Technical Information

Catalogue No:	C0203
Category:	Head-Up Display [HUD]
Object Type:	Module/Sub-Assembly/Component
Object Name:	Gulfstream HUD Combiner Unit
Part No:	25-059-10
Serial No:	PV004
Manufacturer:	Marconi Electronic Systems
Division:	Airborne Display [ADD]
Platform(s):	Gulfstream IV
Year of Manufacture:	circa 1998
Dimensions:	Width (mm): 260 Height (mm): 310 Depth (mm): 140 Weight (g): 2,320
Location:	Rack RAA13 (HUD DU Parts) [Mezzanine Store]

Inscription(s):

Formal Label content:
═══════════════
Honeywell Inc.
Part No. 7023172-907
Serial No. PV004
Mod ABC...XYZ
Bus. & Commuter Avn Sys Div
Phoenix AZ USA

Informal Paper Labels content:
════════════════════
EVS Combiner Assembly
Part No: 25-059-10
Serial No: PV004
MRB 570/5169

Notes:

This Combiner is the type for the later Gulfstream V aircraft that was fitted with EVS sensors; the extra switches are to control the FLIR contrast and brightness.

This item is connected via a 700mm electrical cable.
EVS Combiner Assembly Honeywell Pt No. 7023172-907, Serial No. PV004 as fitted to later Gulfstream V aircraft fitted with EVS sensors; the extra switches are to control the FLIR contrast and brightness. Gulfstream called the cockpit ‘Planeview’ so this unit serial number PV004 implies ‘Planeview 004’.

Gulfstream GIV and GV 2020 Civil HUD

In 1994 Honeywell teamed with GEC Avionics on HUD and the system was marketed as the HUD 2020, because of the link to good vision; it comprised a compact CB-200 monochrome combiner and EO-200 electro-optical overhead unit, together with the HG-200 digital headup guidance computer which was made by Honeywell. The HUD 2020 weighs only 23 kg with much of the saving coming from the extremely lightweight Combiner which is only 4mm thick. The Combiner is curved and extremely thin with a frequency selective coating made up of several hundred layers of variable refractive index material called a ‘rugate’ coating.

The 2020 system was certified to Category II and is offered as a standard option on the GIV, GIV-SP and GV

The original Gulfstream IV HUD was stroke only with "growth to raster" built in, but never taken to full production.

Honeywell developed an Infra-Red system with Kollsman which gave night vision through the HUD. The later HUD was a full raster/cursive capable unit and this system was an option on the Gulfstream. It was called EVS Enhanced Visual System.

Combiner Glass for 2020 and 2022 Civil HUD

The Combiner is curved and only 4mm thick with a frequency selective coating made up of several hundred layers of variable refractive index material called a ‘rugate’ coating. This coating was originally called a synthetic hologram to make it sound impressive! The Combiner weighs only 340gms.