Keynote Speaker Ⅰ

Professor Jinlu Yu

Air Force Engineering University, China

Brief introduction: Yu Jinlu, Professor and Doctoral Supervisor of Air Force Engineering University(AFEU). Engaged in research on aero-engine performance evaluation and advanced combustion. Presided over 15 projects including the National Major Science and Technology Special Program, Major Research Plan of the National Natural Science Foundation of China, Frontier Innovation Program of the Science and Technology Commission of the Central Military Commission, and Basic Enhancement Program. Awarded the Provincial and Ministerial Second-Class Prize (2025-1), authorized with 15 invention patents and published more than 60 academic papers. Shaanxi Province Special Support Program Leading Talents in Technological Innovation, Team Leader of Shaanxi Provincial University Youth Innovation Team. Head of a National Virtual Teaching and Research Room, Principal of a National First-Class Undergraduate Course, winner of Second Prize of National Teaching Achievement Award (2022-5), Outstanding Contribution Award (First Class) of the "China Heart for Aviation Power" Education Fund, and National Distinguished Young Teacher in Aviation Power.

Speech Title: Advances in Plasma-Assisted Combustion Technology for Aircraft Engines

Abstract: At present, aeroengines suffer from insufficient ignition and stable combustion boundaries at low indicated airspeed on plateaus and high altitudes, and ignition as well as stable combustion in the high-speed airflow of scramjet engines under the condition of rarefied air in near space prove to be rather challenging. Under such complex operating conditions, conventional ignition methods are unable to meet the ignition requirements of aeroengine combustion chambers. Plasma,by virtue of its temperature rise/high-temperature effect,chemical effect and aerodynamic effect, has rendered plasma-enhanced combustion technology an effective technical approach for expanding ignition boundaries and extending the range of stable combustion, and it exhibits enormous application potential in the field of aeroengine ignition and combustion support.The combustion dome based on 3D rotating gliding arc plasma is a novel and original solution in the field of plasma ignition and combustion support.This combustion dome generates 3D rotating gliding arc plasma between the fuel nozzle and the Venturi tube,which enables the atomized fuel to undergo cracking upon passing through the plasma region so as to achieve ignition and combustion support. It features the advantages of lean fuel/low-temperature ignition, an expanded combustion range, improved combustion efficiency and low energy consumption. Air plasma jet igniters and pre-combustion plasma jet igniters also serve as novel technical schemes in the field of plasma ignition. In comparison with electric spark igniters, pre-combustion plasma jet igniters can effectively shorten the ignition delay time, greatly expand the ignition boundaries and enhance the ignition reliability.