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Platform Electronics Unit (PEU)

Technical Information

Catalogue No: C0014
Category: Navigation/Inertial
Object Type: Signal/Data Processor
Object Name: Platform Electronics Unit (PEU)
Part No: 53-001-05
Serial No: 288
Manufacturer: Unknown
Division: Unknown
Platform(s): Jaguar
Year of Manufacture: Unknown
Dimensions: Width (mm): 194
Height (mm): 215
Depth (mm): 360
Weight (g): 9,260
Location: Rack RAA09 [Main Store]

Type No 53-001-05
Ref No 6JA 6472759
Ser No 288
Code No K0656
DL. Iss. 1.
Modification Record 1, 2, 3 & 4
Chassis Wired
Type No 7906-00305 Iss. 1.
Ref No 6JA/6370486
Ser No 282
Code No K0656
MRB 275/3826
Modification Record 1, 2, 3 & 4


The Platform Electronics Unit interfaces with the E3R Platform and is powered by the same Power Supply Unit. The PEU also interfaces with the Navigation Control Unit and the system Interface Unit (which works with the PMD and the Digital Computer).

The unit's Chassis Wired contains the following 30 circuit modules:
1x DL7736-00017 Oscillator & Prec' Switches
1x DL7736-00074 ACPWM 'X' & 'Y'
1x DL7736-00073 ACPWM 'W'
1x DL75D24033 ACPWM 'X' & 'Y'
1x DL????-????? ???? Pitch

1x Dl????-????? 4.8kcs & 19.2kcs
1x DL7736-00067 Sequencing Unit 1
1x DL7736-00006 Sequencing Unit 2
1x DL7736-00007 Sequencing Unit 3
1x DL7501-00021 Spin Motor Supply

1x DL????-?????
2x DL7736-00010 Main Register 1
1x DL7736-00011 Main Register 2
1x DL7736-00012 Main Register 3
1x DL7736-00008 Par. Series Converter 1
1x DL7736-00009 Par. Series Converter 2
1x DL7736-00044 'W' Register
1x DL7736-00005 ±5V Precision & Roll

1x DL7736-00002 Clock Pulse Generator 1
1x DL7736-00003 Clock Pulse Generator 2
1x DL7736-00004 Clock Pulse Generator 3
2x DL7736-00013 Aux. Register 'X' & 'Y'
1x DL7736-00015 Line Receiver 1
1x DL7736-00016 Line Receiver 2
1x DL7702-00008 Monitor Unit (PEU)

1x 75D24192 Roll Gearbox
1x DL7743-00001 Oven 1 (X & Y Integrators)
1x DL7743-00002 Oven 2 (W Integrator, ±5V Precision)

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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