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Multiple aspects to flight mission performances improvement of commercial turbofan engine via variable geometry adjustment

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  • Cai, Changpeng
  • Wang, Yong
  • Fang, Juan
  • Chen, Haoying
  • Zheng, Qiangang
  • Zhang, Haibo

Abstract

To meet the operational requirements of commercial engines for high economic efficiency and low pollution emission, the research on the flight mission performance improvement method of commercial turbofan engines based on variable geometry optimization regulation is carried out. Firstly, the aero-thermodynamic component level model of the commercial turbofan engine with variable geometry and pollutants emission characteristics predicting is established. Then, the engine performance improvement method of full flight mission based on variable geometry optimization adjustment is studied. Finally, through the analysis of energy and exergy, the effect of variable geometry adjustment on the energy utilization characteristics of the engine is explored. The simulation results demonstrate the acceleration time is reduced by 30% on the ground state, which improves the flight security of the aircraft in emergency states. In energy and exergy aspect, it improves the exergy efficiency of the whole engine, with the maximum relative increase of 5.51%. In environmental and sustainability aspect, it reduces 937.3 kg fuel consumption and 24.33 kg nitrogen oxide emissions of each engine in the 3000 nautical mile flight mission. Sustainability indexes change better than expected. The method proposed provides a feasible reference for the design of commercial turbofan engines under the background of carbon neutrality.

Suggested Citation

  • Cai, Changpeng & Wang, Yong & Fang, Juan & Chen, Haoying & Zheng, Qiangang & Zhang, Haibo, 2023. "Multiple aspects to flight mission performances improvement of commercial turbofan engine via variable geometry adjustment," Energy, Elsevier, vol. 263(PA).
    • Handle: RePEc:eee:energy:v:263:y:2023:i:pa:s0360544222025798
    DOI: 10.1016/j.energy.2022.125693
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