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Navigation Control Unit

Technical Information

Catalogue No: C0208
Category: Navigation/Inertial
Object Type: Control/Data Entry
Object Name: Navigation Control Unit
Part No: 25-003-03
Serial No: 081
Manufacturer: Elliott Bros (London) Ltd
Division: Unknown
Platform(s): Jaguar
Year of Manufacture: circa 1975
Dimensions: Width (mm): 185
Height (mm): 114
Depth (mm): 218
Weight (g): 3,580
Location: Triple Shelf Unit, LH (control panels) [Main Store]

N.C.U. (Front)
Type No. 25-003-03
Ref No 6JA/6605-99-111-8584 [NSN]
Ser No. 081
Code No K0656
Modification Record 4
30 MU.9.84.R


The NCU is a small compact unit, complete with its own power supply providing both Control and Display facilities to the navigation system operator. The unit operates in conjunction with the Projected Map Display. The facilities offered include, switch-on, alignment, waypoint setting and selection, fixed and reversionary operation. The NCU also provides readout of navigation data and indication of system malfunction. 12 waypoints can be inserted as well as information such as wind, offsets and heading. 20 quantities can be displayed including latitude, longitude, heading, ground-speed and magnetic variation.

This unit was made by Elliotts and referenced in Company brochures as early as 1970.

It was donated by Robert Soek and is in poor condition.

In 1967 Elliotts had been awarded a major contract for the design, development and integration of a Navigation and Weapon Aiming Sub-System (NAVWASS) for the RAF's new Jaguar aircraft.

The Jaguar was designed as a close air support aircraft for supporting ground troops in daylight. The NAVWASS enabled the pilot to navigate and fly at low level and high speed to acquire and accurately attack targets. Trials of the prototype Jaguar system were carried out using a Varsity aircraft at West Malling airfield in Kent


The Jaguar NAV/WASS  sub-system comprises four principal groups of equipment. The sensors, which measure what the aircraft is doing and feed these measurements into the computer; the computer sub-system which processes this measured information into a form which can be used by the pilot; the cockpit controls which control the system's mode of operation and lastly, the cockpit displays which show to the pilot the computer's outputs of converted measurement information and also information, such as target or waypoint position, which is being input into the computer. The system included an E3R inertial platform, Digital Computer, a HUD, Projected Map Display, Horizontal Situation Indicator and various cockpit control panels.

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