« Previous Next »

Civil HUD Overhead Pilot's Display Unit

Technical Information

Catalogue No: C0054
Category: Head-Up Display [HUD]
Object Type: Display Unit
Object Name: Civil HUD Overhead Pilot's Display Unit
Part No: 79-135-01
Serial No: G001
Manufacturer: Unknown
Division: Unknown
Platform(s): Gulfstream II 
Year of Manufacture: 1992
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Main Object Store

Dsgn Act K0656
PN 79-135-01
Mfr K0656
NSN G001


Development of a hub-and-spoke network increases the importance of keeping an airline's home runways open. Rather than wait for the US Federal Aviation Administration to upgrade the landing aids at airports, airlines in the USA in the early 90’s began to look at what could be done to their aircraft to enable them to land in low visibility.
The most promising solution appeared to be a system to enhance the pilot's ability to see the runway in fog. An enhanced vision system (EVS) comprises a head-up display
(HUD) onto which is projected an image of the runway from an infra-red (IR) sensor or
millimetre-wave (MMW) radar. The enhanced image allows the pilot to recognise the runway from a greater distance and to continue the approach, rather than divert.
Installation of a HUD in the cockpit overhead area was generally preferred. Overhead Projection Units were developed by the Company and in 1992 a HUD was test flown at the Maryland Advanced Development Laboratory on their Gulfstream II testbed aircraft. C0054. This is an overhead Projection Unit from an early design known as the Maryland HUD.

This HUD dates from 1992 and is an overhead unit with a Combiner designed to fold away when not required or to flip forward in the event of head impact. It was made from F-16 and C-17 components for the FAA Enhanced Vision System which was fitted to the Gulfstream II. It was known as the Maryland HUD.

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