Technology Explained

New Tusks for the Pig the F-111 Rvianics Upgrade Programme Pt III

The RAAF’s F/RF-111C Avionic Upgrade Programme is now under way and will see the aircraft fitted with a state of the art digital offensive avionic suite and digital flight control system. This final part completes our technical review of this important RAAF project.

Cockpit, MFDs and ICNIS

The principal cockpit interface to the new avionic system is provided by a pair of Honeywell Multi Function Displays (MFD), which are driven by a Mil-Std-1553B bus interfaced Honeywell Extended Memory Programmable Display Generator (EXPDG). The EXPDG generates video signals for the display tubes in the MFDs, based on software commands transmitted over the Mil-Std-1553B bus from the mission computers while it also reads the push buttons on the MFDs to allow command entry to the mission software running on the computers. The use of a PDG driving “dumb” displays is a conventional strategy used also on the F/A-18, and the MFDs used in the AUP are identical to those employed in the USAF upgrades.

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