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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (9): 631066.doi: 10.7527/S1000-6893.2024.31066

• special column • Previous Articles    

Sensitivity analysis on key parameters of hybrid hydrogen fuel cell commercial aircraft

Zhouwei FAN, Chuihuan KONG, Ming LIU, Zhaoguang TAN()   

  1. Shanghai Aircraft Design and Research Institute,Commercial Aircraft Corporation of China Ltd. ,Shanghai 201210,China
  • Received:2024-08-16 Revised:2024-09-29 Accepted:2024-10-09 Online:2024-10-24 Published:2024-10-23
  • Contact: Zhaoguang TAN E-mail:tanzhaoguang@comac.cc
  • Supported by:
    Shanghai Post-Doctoral Excellence Program

Abstract:

Hybrid hydrogen fuel cell aircraft is one of the feasible technological routes to reduce carbon emissions in the aviation industry. However, there is a lack of mechanism analysis and quantitative trend research on the impact of different hybrid hydrogen fuel cell technologies on the overall characteristics of aircraft. A sensitivity analysis method for key parameters of hybrid hydrogen fuel cell commercial aircraft is established to study the mechanism and impact trend of key technical parameters on the overall characteristics of the aircraft. Optimal power allocation strategies matching different technological development stages from current to future 10-year are proposed based on projected hydrogen energy developments. Focusing on narrow-body commercial aircraft, sensitivity analysis on key parameters are conducted. The results show that the power density of the hydrogen fuel cell has the greatest impact on the maximum takeoff weight and operating empty weight of the aircraft, while the thrust proportion by hydrogen fuel cell during cruising has the greatest impact on the carbon emissions of the aircraft, as well as the fuel and carbon tax costs. At different technical levels, improving the thrust proportion by hydrogen fuel cell during cruising can generally reduce the maximum takeoff weight and fuel and carbon tax costs of the aircraft, though excessive hydrogen power allocation during takeoff should be avoided. Under anticipated hybrid technology development trajectories, the aircraft can obtain the lightest maximum takeoff weight and the lowest fuel and carbon tax costs when the thrust proportion by hydrogen fuel cell during cruising is 0.4 and the thrust proportion by hydrogen fuel cell during takeoff is 0.15. Compared with the traditional aircraft, the hybrid hydrogen fuel cell commercial aircraft can reduce fuel and carbon tax costs by 15%–26% in the next decade.

Key words: commercial aircraft, conceptual design, sensitivity analysis, hydrogen fuel cell, hybrid power

CLC Number: