Jaguar FCS Actuator Drive & Monitor Computer

Technical Information

Catalogue No: C0274
Category: Flight Control
Object Type: Signal/Data Processor
Object Name: Jaguar FCS Actuator Drive & Monitor Computer
Part No: 49-060-01
Serial No: 102
Manufacturer: Marconi Avionics
Division: Unknown
Platform(s): Jaguar FBW 
Year of Manufacture: Unknown
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Archive Object Store

Actuator Drive and Monitor Computer


The Jaguar was the result of an Anglo-French collaboration to develop an advanced training and strike aircraft, entering service with the Royal Air Force in 1973.
XX765 was withdrawn from RAF service to demonstrate the feasibility of Active Control Technology (ACT), under development by British Aerospace (BAe). The aircraft's normal control rods were replaced with a 'fly-by-wire' (FBW) control system, which used four independent computer-controlled electrical channels to relay instructions to the flight surfaces. The aircraft was further modified by fitting large leading edge strakes (wing extensions) to move the centre of lift forward and adding ballast to the rear fuselage to move the centre of gravity aft. This enhanced lift and drag characteristics and made the tail plane more efficient thereby allowing smaller lighter engines with greater fuel efficiency to be used, decreasing overall weight by 15%.
Flight trials began in October 1981. Test pilots were impressed by the crisp control responses and smooth flight. The aerodynamic instability of the aircraft enhanced manoeuverability, but the computer-controlled flight commands provided split-second corrections to compensate for the unstable configuration.
The FBW Jaguar programme ended in September 1984 after 96 flights. The information gleaned was used in the development of the Eurofighter.
This box is the interface between the Flight Control Computer and the Actuator drivers. The unit both drivers the actuators and monitors the positioning feedback

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