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Fibre Optic Module

Technical Information

Catalogue No: C1130
Category: Unknown
Object Type: Module/Sub-Assembly/Component
Object Name: Fibre Optic Module
Part No: SPE-J-270-E-9007
Serial No: 030
Manufacturer: GEC Avionics/Aeritalia/Bodenseewerk/Inisel
Division: Unknown
Platform(s): Typhoon (Eurofighter/EFA)
Year of Manufacture: circa 2002
Dimensions:
Width (mm):
123 
Height (mm):
90 
Depth (mm):
105 
Weight (g):
338 
Location: Rack RAA03 [Main Store]
Inscription(s):

GEC Avionics/Alenia/Bodenseewerk/Inisel
Fibre Optic Module
Type No 7914-00298
Ser No 030
Spec No SPE-J-270-E-9007
Mfr Date
NSN
Mfr by GEC Avionics
Code No K0668
Modification Record -
────────────────
[inked on panel]
DEV 208-0336
DEV 208-0337
WVR208-0383
FJD000002
────────────────
[circuit board]
2550-00008
Ser No 00027
────────────────
[programmable device, U1]
6743-01087
Ser No. KCC 9151

Notes:

The Eurofighter Typhoon was first released in 2004 and is equipped with a fiber optic data bus called Stanag 3910. This bus is used for all mission critical systems and had flown for over 100,000 flight hours af of January 2011. This databus utlizes a TDM multiplexing scheme and a datarate of either 1 Mb/s or 20 Mb/s. The incomplete nature of the standardization process (as of Aug. 2013) has not prevented at least two versions of STANAG 3910 being implemented: one for the Eurofighter Typhoon and one for the Dassault Rafale. The Eurofighter version, known as EFABus, is standardized by an internal Eurofighter document (SP-J-402-E-1039). There is also an extended version of EFABus, known as EFABus Express (EfEx). This was designed for tranche 2 of the Eurofighter Typhoon to reduce the time needed to set up the HS transfers by allowing them to be set up over the HS channel. This version is fully compatible with MIL-STD-1553 / STANAG 3838 and the mixed EFABus (STANAG 3910).

A four-nation team led by GMAv provided key elements of the digital Flight Control System fitted to the two prototype EF2000 aircraft and this led to a contract for the production aircraft.

The Flight Control System (FCS) provides the aircraft with a full-time fly-by-wire system controlling the aircraft via its eleven primary and secondary flying controls surfaces. Unlike conventional aircraft such as Tornado, EF2000 has no mechanical back-up system and is, therefore, totally dependent on this digital system. The Company is responsible for supplying the Flight Control Computers (FCCs), the Stick Sensor and Interface Control Assembly (SSICA) and the air data probes.

As the safety of the aircraft is dependent on the FCS, each aircraft is fitted with four FCCs. Should a failure occur in one computer, this can be isolated by either the failed computer itself or by the remaining good computers and the aircraft will continue to fly normally.

As a centre-mounted control stick acting as the primary interface between the pilot and the flight control system, the SSICA electrically signals pilot inputs (pitch and roll demands) to the computers. The unit also acts as an interface between various switches and warning lights in the cockpits and the FCCs.

Prior to the first flight, extensive testing of the system was undertaken at GMAv’s Rochester facility with full FCS testing being performed at DASA's Munich facility.

The other members of the team supplying the FCCs and SSICA are Bodenseewerk Geraetetechnik GmbH, Alenia and ENOSA.

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