Advances in Green Propulsion Engine and Environmental Pollution Control

Dear Colleagues,

Fulfilling the ever-increasing energy demands of society and doing so with environmental and climate protections has initiated the process of decarbonization—the removal of net carbon dioxide emissions. Many countries and industries have announced their roadmaps and measures to reach carbon neutrality. The aviation industry can be treated as one of the most carbon-intense sectors and especially contributes to carbon emissions at high-level attitudes. In response to concerns over the global environmental impacts of aviation, new green aviation technology has been proposed to dramatically reduce fuel use, emissions, and noise and to cut emissions from national commercial aircraft fleets by more than 50% while also reducing perceived noise levels near airports to one-half of the levels of the quietest aircrafts flying today. Our goal is to significantly reduce the impact that air transport has on the climate, and our long-term goal is emission-free flight.

To date, intensive efforts have been made to develop an efficient, stable, and green aero-engine. New technologies, including innovative and optimal designs of aero-engines are developed to improve the efficiency and performance of aero-engines. The improvement of aero-engine SFC（Specific Fuel Consumption）is highly beneficial to reduce carbon emissions. Efforts can be made to enahce the efficnecy of engine components. Moreover, the development of advanced thermal cycles is also promising. Hydrogen is also considered to be one of the most promising energy sources and is capable of meeting our rapidly growing energy demands due to its cleanliness, sustainability, zero-carbon, and effectiveness. Topics of interest in green aviation technologies include studies on hydrogen, hydrogen–kerosene blends, the interaction between combustors and turbines, advances in combustion instabilities, combustion chamber design, and combustion strategies and technical solutions, turbine-cooling technology, adavances in fan/compressor design, and the aerodynamic and aeroelastic instabilities of turbomachinery.

Original research articles based on theoretical/experimental studies and critical reviews are highly welcome.

New aviation propulsion technology will usher in new development opportunities. Green and efficient aircraft engines are the core link of the whole aviation industry chain, and every technological innovation of the engine is an important driving force for the development of aviation history.

Dr. Xinyan Pei
Prof. Dr. Lingyun Hou
Dr. Baotong Wang
Guest Editors

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