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Circuit Module

Technical Information

Catalogue No: C1292
Category: Unknown
Object Type: Module/Sub-Assembly/Component
Object Name: Circuit Module
Part No: 7743-00347-04
Serial No: ?
Manufacturer: Unknown
Division: Unknown
Year of Manufacture: circa 1998
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Paul Fuller Entrance



Flight Controls Division (FCD) supplied all –digital control units for the slats and flaps of the A310 and A300-600 Airbus and this led to further business on the A320. The system was produced in collaboration with Liebherr Aero-Technik GmbH of Germany.
The system for the high-lift control on the Airbus A321 A320 consists of two computers, one flaps lever and associated sensors in the wings. The Slat/ Flap Control Computer (SFCC) 47-170-07A controls and monitors the slats and flaps during take-off and landing of the aircraft. The signal from the flap control lever is signalled via a CSU to two identical computers, the Slat Flap Control Computers (SFCC). Each SFFC has two channels, one for the slats and one for the flaps. Each of these channels can drive its associated surfaces. The slat and flap drive systems are controlled and monitored by the SFCC, each of them controls one slat and one flap hydraulic motor.
As secondary flight control, the flight control system belongs to the safety-related devices of the aircraft. The design incorporates dissimilar processors with different architecture, instruction sets and software each having to agree with the other for the control to operate.. If one computer detects an error, the system conducts an automatic change over to the other computer without hindering the functionality of the whole system.

With digital avionics came the need for an effective means of data communications. The result was the release of a new data transfer system exhibiting a high level of efficiency, extremely good reliability, and ease of certification. ARINC 429 became the industry standard. Subsequent to release of the standard, numerous low-cost integrated circuits were produced by solid-state component manufacturers.
This circuit Module hosts the ARINC 429 Databus and the synchro converters.
Design date:- between 1997 and 1999.

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