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Pipelite HMD Drive

Technical Information

Catalogue No: C0383
Category: Head-Mounted Equipment [HMD/NVG/Glasses]
Object Type: Signal/Data Processor
Object Name: Pipelite HMD Drive
Part No: 62-A0-6410
Serial No: 001/79
Manufacturer: Marconi-Elliott Avionic Systems Ltd
Division: Airborne Display [ADD]
Year of Manufacture: 1979
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Main Object Store

Marconi-Elliott Avionics
Part 62-A0-6410
Ser 001/79
Code K0656
[Dymo label]
ADD 22


In 1978 the Company Research Laboratory (FARL) received an MOD contract to develop a helmet mounted display system for potential use by a helicopter pilot. The system would present a video picture of the outside world from a helmet-steered low-light sensor (LLTV of FLIR).

"Pipelite" uses an airframe mounted high-resolution CRT and a coherent fibre-optic cable of over one million picture points which transfers the image to a viewing optic mounted on the pilot's helmet. The viewing optic was similar to the "MonoHUD" type giving a clear view of the outside world with a 40° display overlaid. At the time it was seen to have advantages over helmet mounted CRTs which were bulky, low in resolution and require high voltage.

The system seen here comprises the chassis mounted box containing the CRT but the rest of the system has been lost, although there are MonoHUD optics in the collection.

Click to enlarge