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Lightning Air Data Computer Power Supply Unit

Technical Information

Catalogue No: C0189
Category: Air Data
Object Type: Power Supply/Conditioner
Object Name: Lightning Air Data Computer Power Supply Unit
Part No: 3D5879
Serial No: 095/61
Manufacturer: Elliott Bros (London) Ltd
Division: Unknown
Platform(s): Lightning
Year of Manufacture: 1961
Dimensions: Width (mm): 226
Height (mm): 134
Depth (mm): 182
Weight (g): 4,360
Location: Rack RAA10 [Main Store]

A.D.C. Power Supply Unit B.
Type No. 3D5879
Ref. No. 6A6822
Ser. No. 095/61
Other inscriptions:


Primary power supplies in the Lightning were generated by an AC Alternator and a DC Generator both driven by an air turbine drive unit. The aircraft has 28VDC and AC supplies at both 115 V, three-phase, 400 c/s power supply voltage for equipment and 4VAC for lighting The function of this unit seems to be power conditioning to provide the specific supplies required by the Air Data Computers. Similar units were fitted to the Buccaneer. The relationship between ‘Type’ and ‘Mk’ numbers is not known but it would seem that each ‘Type’ can have incremental ‘Mk’ numbers.

This is a Power Supply Unit 'Type B'.
In April 2017 this unit was taken by the MoD to be scrapped; unfortunately the RAA could not afford their price to retain it in the museum!

Click to enlarge