Data communications management for the Boeing 777 airplane

摘要

The integrated avionics architecture of the Boeing 777 airplane,nwhere several functions normally housed in separate computer units arenimplemented within a single avionics cabinet, presented some uniquenopportunities and challenges for the implementation of the data linknfunctionality. The Data Communications Management Function (DCMF) isnresponsible for the communications routing protocols, both for the ACARSnair-ground communications and the onboard, fiber optic avionics network.nThe Flight Deck Communications Function (FDCF) implements the crewninterface to the data Link function using a Cursor Control Device (CCD)nand Multi-Function Display (MFD) in addition to the conventional Controlnand Display Unit (CDU) and printer. FDCF is also responsible for thenimplementation of the customer unique Aeronautical Operational Controln(AOC) applications which may be tailor-made and loaded into the systemnby the airline customer using a ground-based tool. This paper discussesnthe architectural and operational characteristics of the data linknfunction on the Boeing 777 airplane, and consider how future data linknapplications and protocols may be accommodated