Abstract：This research concentrates on the high integrated complicated system architecture and the complexities at final assembly test stage. It proposes a distributed-network integrated test environment for aircraft final assembly stage towards the current long-time taken of final assembly tests, which fails to meet the needs of efficient mass production of new generation aircraft. The proposed test environment has the capacity to verify the functionalities and performance of aircraft airborne systems at production stage in a hierarchical, comprehensive, and high-efficient way. This research designs a “off-aircraft test and on-board test” final assembly test mode based on the analysis of airborne system test contents and efficiency. This mode uses the distributed architecture of “control integration-distributed test” based on Ethernet, which satisfies the needs of off-aircraft sub-systems tests, overall-aircraft collaborative tests under multi-hierarchy test processes of final assembly. It links the test parameters of multiple systems, and solves the problems of large test volume, high failure rate and difficult troubleshooting in traditional tests of final assembly. The aircraft vehicle management & flight control system is selected as a typical case study as it is highly integrated. A distributed-network integrated test environment is built for final assembly to verify the feasibility and efficiency, which achieved 52% reduction in overall tests, 60% reduction in failure rates, and 89% increase in troubleshooting efficiency.
2022, 
