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【航宇大講堂】Active Space Debris Removal by Electrodynamic Tethers


報告題目:Active Space Debris Removal by Electrodynamic Tethers

報告人 :Zheng H. Zhu(York University, Canada)

報告時間:2021/12/14 10:00-11:00 (GMT+08:00) 中國標準時間 - 北京



報告內容摘要:Electrodynamic Tether (EDT) technology is a new type of propellentless propulsion technology that can lower or boost spacecraft orbits without consuming propellant. The EDT technology is based on two fundamental principles of electromagnetism: electrical current is produced when a conductive wire moves through a magnetic field, and the field exerts a force on the current carrying wire. One of the most appealing application of EDT is the space debris removal due to the advantages of propellentless, low mass, compact size, ease of use and low cost. This  seminar will review the history of space tether missions, discuss the physical principles of EDT, explore the challenges and opportunities in orbit maneuvous application, and showcase our EDT mission – DESCENT (DEorbiting SpaceCrafts using ElectrodyNamic Tethers) from mission concept study, to mission objectives, nanosatellite design, hardware selection, and operation. The satellite was launched into orbit in November 2020 and decommissioned by the end of September 2021.


Zheng Hong Zhu received his BE, ME and PhD in Engineering Mechanics from Shanghai Jiao Tong University. He also received MASc in Robotics from Unviersity of Waterloo and PhD in Mechanical Engineering from University of Toronto, all in Canada. Currently, he is the Professor and Tier I York Research Chair in Space Technology at the Department of Mechanical Engineering, and inaugural Academic Director of Research Commons at the Office of Vice-President Research and Innovation, York University in Toronto, Canada. Dr. Zhu’s research focuses on Dynamics and control of space tether systems, space elevators, autonomous space robotics, space debris removal and computational mechanics. Dr. Zhu is the College Member of Royal Society of Canada, Academician of International Academy of Astronautics, Fellow of Canadian Academy of Engineering, Fellow of Engineering Institute of Canada, Fellow of Canadian Society for Mechanical Engineering, Fellow of American Society of Mechanical Engineers, and Associate Fellow of American Institute of Aeronautics and Astronautics. He is the recipient of 2021 Robert W. Angus Medal of Canadian Society for Mechanical Engineering and 2019 Ontario Professional Engineering Medal in Research and Development. (朱正宏教授在上海交通大學獲得工程力學學士、碩士和博士學位;后分別獲得加拿大滑鐵盧大學機器人學碩士學位和多倫多大學和機械工程博士學位?,F任約克大學機械工程系教授,Tier I York Research Chair和研究與創新副校長辦公室學術主任。研究方向包括空間繩系系統的動力學與控制、太空電梯、自主空間機器人、空間碎片清除和計算力學。朱教授是加拿大皇家學會會員、國際宇航科學院院士、加拿大工程院院士、加拿大工程研究院院士、加拿大機械工程學會會士、美國機械工程師學會會士和美國航空航天學會副會士;2021 年獲加拿大機械工程學會Robert W. Angus Medal;2019 年獲Ontario Professional Engineering Medal)