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Cascading effect analysis of IMA system for multi-phased mission in SPO mode
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Lei DONG1, 2, Jiachen LIU**, 3, Zijing SUN4, Xi CHEN1, 2, Peng WANG1, 2
China Safety Science Journal | 2026, 36(2) : 84 - 92
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China Safety Science Journal | 2026, 36(2): 84-92
• Safety Technology and Engineering •
Cascading effect analysis of IMA system for multi-phased mission in SPO mode
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Lei DONG1, 2, Jiachen LIU**, 3, Zijing SUN4, Xi CHEN1, 2, Peng WANG1, 2
Affiliations
  • 1Key Laboratory of Civil Aircraft Airworthiness Technology, Civil Aviation University of China, Tianjin 300300, China
  • 2Science and Technology Innovation Research Institute, Civil Aviation University of China, Tianjin 300300, China
  • 3Equipment Management and UAV Engineering College, Air Force Engineering University, Xi'an Shaanxi 710051, China
  • 4Xi'an Aeronautics Computing Technique Research Institute, Aviation Industry Corporation of China, Xi'an Shaanxi 710065, China
Published: 2026-02-28 doi: 10.16265/j.cnki.issn1003-3033.2026.02.0148
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To address the problems of state-space explosion and unclear causal relationships in the safety analysis of IMA system under the future SPO mode, multi-phase mission profiles for the SPO mode were first defined, and the resident applications and fault criteria for different mission phases were identified. The concept of CEA was introduced, and a quantitative computational model for cascading fault propagation was developed. Methods for evaluating the probability of cascading faults and the cascade risk coefficient were designed to assess the propagation speed, scope, and impact severity of faults within the IMA system. Finally, a comparative analysis was conducted under an SPO scenario to examine how cascading faults affect the IMA system across different mission phases and initial fault conditions. The results show that the proposed model can characterize both the direct and indirect impacts of faults in the IMA system. When primary flight control and integrated navigation are initial fault events, cascading faults are more likely to occur, indicating that targeted backup, monitoring, or reconfiguration measures for key resident applications are required.

single-pilot operations (SPO)  /  multi-phased mission  /  integrated modular avionics (IMA)  /  cascading effect analysis (CEA)  /  resident applications
Lei DONG, Jiachen LIU, Zijing SUN, Xi CHEN, Peng WANG. Cascading effect analysis of IMA system for multi-phased mission in SPO mode[J]. China Safety Science Journal, 2026 , 36 (2) : 84 -92 . DOI: 10.16265/j.cnki.issn1003-3033.2026.02.0148
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Year 2026 volume 36 Issue 2
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2026.02.0148
  • Receive Date：2025-08-15
  • Online Date：2026-07-08
  • Published：2026-02-28
Article Data
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History
  • Received：2025-08-15
  • Revised：2025-12-21
Funding
Affiliations
    1Key Laboratory of Civil Aircraft Airworthiness Technology, Civil Aviation University of China, Tianjin 300300, China
    2Science and Technology Innovation Research Institute, Civil Aviation University of China, Tianjin 300300, China
    3Equipment Management and UAV Engineering College, Air Force Engineering University, Xi'an Shaanxi 710051, China
    4Xi'an Aeronautics Computing Technique Research Institute, Aviation Industry Corporation of China, Xi'an Shaanxi 710065, China
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