Optimization of Thermodynamic Cycles, Control System Innovation, and Reliability Enhancement in Variable Cycle Engines

Yanjun Chen

doi:10.54097/j4dsg391

Authors

Yanjun Chen

DOI:

https://doi.org/10.54097/j4dsg391

Keywords:

VCEs, Thermodynamic Cycle Optimization, Fuel Efficiency, Control Systems.

Abstract

This paper examines the design and optimization of Variable Cycle Engines (VCEs) to achieve high efficiency across various flight conditions. By adjusting the bypass ratio, VCEs can optimize performance in both low-speed and high-speed flights, enhancing fuel economy and flight performance. Key areas include optimizing thermodynamic cycles through flexible bypass ratio adjustments and developing advanced multi-parameter control systems for precise and efficient operation. Despite increased complexity and weight, VCEs offer significant performance gains. Future research should focus on lightweight materials, robust control algorithms, and system integration to further improve VCE performance and reliability. These advancements will ensure VCEs play a crucial role in the future aviation sector, driving improvements in fuel efficiency, performance, and safety.

Downloads

Download data is not yet available.

References

[1] MARCO A. B. DO NASCIMENTO, PERICLES PILIDIS, 1991, The Selective Bleed Variable Cycle Engine, ASME, International Gas Turbine and Aeroengine Congress and Exposition Orlando, FL June.

[2] MARCO A. B. DO NASCIMENTO, PERICLES PILIDIS, 1992, An Optimization-Matching Procedure for Variable Cycle Jet Engines, ASME, International Gas Turbine and Aeroengine Congress and Exposition Cologne, Germany June 1-4.

[3] U.T.J. Gronstedt, Pericles Pilidis, 2000, CONTROL OPTIMIZATION OF THE TRANSIENT PERFORMANCE OF THE SELECTIVE BLEED VARIABLE CYCLE ENGINE DURING MODE TRANSITION, ASME, International Gas Turbine & Aeroengine Congress & Exhibition, Munich, Germany, May 08-11, 2000.

[4] Martin Dodds, Pericles Pilidis, 1999, THE INFLUENCE OF A VARIABLE CAPACITY TURBINE IN THE PERFORMANCE OF A VARIABLE CYCLE ENGINE, ASME, International Gas Turbine & Aeroengine Congress & Exhibition Indianapolis, Indian, June 7-June 10.

[5] Sun Mingxia, Liang Chunhua, Suo Dejun, Liu Dianchun, 2021, Analysis of the Progress of the U.S. Sixth-Generation Fighter Engine, Aero Engine, Vol. 47, No. 3.

[6] Clark, R. A., Shi, M., Gladin, J., & Mavris, D. (2022). Design and analysis of an aircraft thermal management system linked to a low bypass ratio turbofan engine. Journal of Engineering for Gas Turbines and Power, 144 (1), 011019.

[7] Wen Qi, Pei Xinyan, Tian Hongyu, & Hou Lingyun. (2023). Study on the Impact of Air-Oil Heat Exchangers on the Overall Performance of Variable Cycle Aero Engines. Propulsion Technology, 44 (2), 32-41.

[8] Eiler, Donald C.,2011, Variable cycle boost propulsor, EUROPEAN PATENT SPECIFICATION, EP 1302640B1.

[9] Zhen, M., Dong, X. Z., Zheng, J. C., Liu, X. Y., & Tan, C. Q. (2023). Performance prediction method for forward variable area bypass injector of variable cycle engine based on numerical simulation. Journal of Engineering for Gas Turbines and Power, 145 (6), 061002.

[10] Jagdish S. Sokhey, Anthony F. Pierluissi, 2014, Gas Turbine Engine System and Supersonic Exhaust Nozzle, US 20140238043A1.

[11] Felix Izquierdo, Timocy J. McAlice (United Technologies Corporation), 2014, Nozzle Section for a Gus Turbine Engine, US 20140165575A1.

[12] Daniel Bernard Kupartis, 2016, GAS TURBINE WITH TWO SPOOL FAN AND VRAIABLE VANE TURBINE, US 20160186667A1.

[13] Gary D. Roberge (United Technologies Corporation), 2011, REAR PROPULSOR FOR A VARIABLE CYCLE GA TURBINE ENGINE, US8082727B2.

[14] Qi Yiwen, Zhang Chi, & Chen Yuxi. (2022). Thrust Control of Variable Cycle Engines Based on Reinforcement Learning Methods. Journal of Shenyang Aerospace University, 39 (3), 40-49.

[15] Long Qianguang. (2021). Research on Control Plans for Dual Bypass Variable Cycle Engines (Master's thesis, Nanjing University of Aeronautics and Astronautics). https://link.cnki.net/doi/10.27239/d.cnki.gnhhu.2021.001517 doi:10.27239/d.cnki.gnhhu.2021.001517.

[16] Miao Rongcheng. (2021). Research on Control Laws for Dual Bypass Variable Cycle Engines (Master's thesis, Nanjing University of Aeronautics and Astronautics). https://link.cnki.net/doi/10.27239/d.cnki.gnhhu.2021.001026 doi:10.27239/d.cnki.gnhhu.2021.001026.

[17] Zhao Fangjiao. (2022). Design of a Multivariable Optimization Control System for Variable Cycle Engines (Master's thesis, Dalian University of Technology). https://link.cnki.net/doi/10.26991/d.cnki.gdllu.2022.000465 doi:10.26991/d.cnki.gdllu.2022.000465.

[18] Chen Yun. (2021). Research on Rapid Analysis Technology for the Overall Structural Dynamics of Variable Cycle Engines (Master's thesis, Nanjing University of Aeronautics and Astronautics). https://link.cnki.net/doi/10.27239/d.cnki.gnhhu.2021.000600 doi:10.27239/d.cnki.gnhhu.2021.000600.

[19] Zhang Zhilan. (2013). A Brief Analysis of the Reliability and Technical Risks of Variable Cycle Aero Engines. In Proceedings of the 13th Sub-venue of the 15th Annual Meeting of the China Association for Science and Technology: Seminar on Design, Manufacturing, and Application Technology of Aero Engines (pp. 586-591). AVIC Shenyang Engine Design and Research Institute.