As our circle of knowledge expands, so does the circumference of darkness surrounding it. — Albert Einstein
Don't walk behind me; I may not lead. Don't walk in front of me; I may not follow. Just walk beside me and be my friend. — Albert Camus
Yueh-Heng LiAddress:
Dept. Aeronautics and Astronautics, National Cheng Kung University
No. 1, University Rd., Tainan City, 70101, Taiwan
Phone: +886-6-2757575 ext. 63632
Email: yueheng@mail.ncku.edu.tw/ yuehheng.li@gmail.com
Professional Position:
2021-present: Professor, Dept. Aeros. & Astros., NCKU
2018-2021: Associate Professor, Dept. Aeros. & Astros., NCKU
2018-present: Director of International Student Affairs Division, NCKU
Scientific Expertise
Combustion and Heat transfer, Clean Fossil Fuel Combustion Technology, Thermophotovoltaics Power System Integration, Micro Plasma Thruster, Laser Diagnostics, Biomass Energy Technology
ZAP Power won the finalists in main contest of 2017 TECO Green Tech International Conte...
3rd Southeast Asia Workshop on Aerospace Engineering(SAWAE 2018) held in Bangkok, Thail...
This is the ion thruster and hollow cathode (neutralizer) system designed by Professor Li Yueh-Heng's research team from the Department of Aeronautics and Astronautics at National Cheng Kung University, Taiwan. The video demonstrates the process from ignition to stable operation of the ion propulsion system. It shows how electrons supplied from the hollow cathode ignite the main ion thruster, and then the electrons are used to neutralize the plasma plume of the main thruster.
This vacuum cathode arc thrust system was designed by Ph.D. student Ping-Han Huang from our ZAPlab team. The distinctive feature of this system is that the cathode serves not only as an electrode but also as propellant fuel. The discharge frequency of this propulsion system is adjustable, with a maximum frequency of up to 20 Hz.
This is a new type of pulsed plasma thruster proposed by Dr. Sheng-Wen Liu, a Ph.D. student in the ZAPLab research team. The ignition system is designed based on the principle of vacuum cathode arc, replacing the traditional spark plug igniter. This solves the problem of igniter short circuits caused by carbon buildup in the spark plug after long-term electric ignition.
This is a pure iron/air combustion system designed and tested by Professor Li Yueh-Heng's research team at National Cheng Kung University (including Yan-Ru Wang, Po-Hong Lin, Yuan-Syuan Li, and others). Initially, methane is used for ignition. Once the iron/air combustion is stable, the methane flame can be turned off, achieving a zero-carbon emission combustion system. The advantage of burning pure iron is that the combustion product is solid iron oxide, which can be recovered and reduced using renewable energy or hydrogen. The reduced iron can then be reused for combustion. The adiabatic flame temperature of iron is similar to that of coal, so the combustion system does not require large-scale modifications.