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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (11): 531252.doi: 10.7527/S1000-6893.2025.31252

• Articles • Previous Articles    

A safe scheduling model for eVTOL avionics systems for airworthiness requirements

Changxiao ZHAO1,2,3(), Yixuan SUN1   

  1. 1.College of Safety Science and Engineering,Civil Aviation University of China,Tianjin 300300,China
    2.Key Laboratory of Civil Aircraft Airworthiness Technology,CAAC,Tianjin 300300,China
    3.Tianjin Aviation Equipment Safety and Airworthiness Technology Innovation Center,Tianjin 300300,China
  • Received:2024-09-23 Revised:2024-10-24 Accepted:2025-01-22 Online:2025-02-19 Published:2025-02-18
  • Contact: Changxiao ZHAO E-mail:cxzhao@cauc.edu.cn

Abstract:

The safety scheduling model of electric Vertical Take-Off and Landing (eVTOL) avionics system based on risk quantification scheme is proposed to solve the problem of risk aggregation in the existing performance-driven design of eVTOL aircraft avionics systems, which can impact flight safety. A two-layer scheduling scheme of eVTOL avionics system under time constraint and resource constraint is established. By analyzing the airworthiness regulationsof different eVTOL authorities, a description scheme of avionics functional safety critical degree based on expert score and entropy weight method is proposed. The Deep Deterministic Policy Gradient (DDPG) algorithm is used to solve the security criticality equilibrium problem. In the simulation experiment, the load balancing group and safety balancing group were set up, and the longitudinal comparison before and after optimization and the horizontal comparison between groups were carried out. The experimental results show that the proposed eVTOL safety scheduling model can improve the safety critical balance degree between regions by 30. 7%, and reduce the risk pooling deviation coefficient by 10. 8%. Compared with the load balancing group,9. 4% inter-zone safety criticality balance was obtained with 3. 6% load balancing loss. This model provides theoretical support for further integration and large-scale application of eVTOL avionics system.

Key words: eVTOL avionics, safety scheduling model, airworthiness regulations, reinforcement learning, DDPG

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