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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (16): 231624.doi: 10.7527/S1000-6893.2024.31624

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles    

Control law design for variable cycle engine considering environmental indicators

Fulin LI1, Min CHEN1,2, Hailong TANG3, Jiyuan ZHANG3(), Yue ZHOU4, Jing MA4   

  1. 1.School of Engine and Power Engineering,Beihang University,Beijing 100191,China
    2.Jiangxi Research Institute,Beihang University,Nanchang 330096,China
    3.Research Institute of Aero-Engine,Beihang University,Beijing 102206,China
    4.National Key Laboratory of Scattering and Radiation,Beijing 100854,China
  • Received:2024-12-06 Revised:2024-12-31 Accepted:2025-01-23 Online:2025-02-19 Published:2025-02-19
  • Contact: Jiyuan ZHANG E-mail:zhangjiyuan94@buaa.edu.cn
  • Supported by:
    National Natural Science Foundation of China(52406006);Foundation of National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics(2024-CXPT-GF-JJ-88-0001)

Abstract:

Due to its prominent advantages in long-distance and long-endurance transportation, supersonic civil aircraft has become an important development direction for future civil aircraft. The concept of “green aviation” makes energy saving, emission reduction and noise reduction important optimization design objectives of civil aircraft, which naturally imposes corresponding requirements for its power plant. The traditional configuration power fails to realize the combination of low noise at takeoff, high thrust per unit for super-cruise, low fuel consumption rate and low emission index. Taking the dual-containment Variable Cycle Engine(VCE) configuration with Core Driven Fan Stage(CDFS) as the research object, this study examines the design method of steady state adjustable geometry control law considering key optimization design objectives such as the engine performance, jet noise, and NO x emission. The research shows that the improvement in the first-containment variable cycle engine is the best way to improve the engine performance, and increase in the first culvert split ratio helps to reduce NO x emission, while increase in the inner and second culvert split ratios facilites jet noise reduction. The design results are applied to the power unit re-optimization design of the first generation supersonic airliner Concorde. Compared with the baseline scheme, the supersonic cruise fuel consumption rate and the takeoff jet speed are reduced by 20.19% and 44.47%, respectively, enabling the takeoff noise index to meet the airworthiness requirements, under the premise of fulfilling the performance requirements of the aircraft.

Key words: jet noise, NO x emission, variable cycle engine, adjustable geometry regulation, control law optimization design

CLC Number: