Presented By: Aerospace Engineering
Chairs Distinguished Lecture: Micropropulsion Systems Using Water as a Propellant
Hiroyuki Koizumi
Associate Professor
Department of Advanced Energy
The University of Tokyo
Visiting Associate Professor, Massachusetts Institute of Technology
About this lecture:
The University of Tokyo has been researching various micropropulsion systems using water as a propellant for diversified microsatellite missions. In this seminar, I will introduce the research and development status of these propulsion systems: 1: water ion thrusters for missions that require high specific impulse; 2: water resistojet thrusters for missions that require high and multi-directional thrusts; 3: water Hall-effect thrusters for further delta-V requirement using high-electrical power, and 4: water-metal combustion thrusters for high thrust enough for impulsive maneuvers. The first two thrusters have ongoing flight programs, and those are also introduced here. The water ion thruster is based on the design developed for xenon propellant and demonstrated in orbit in 2014 and 2015. The university spin-off company, Pale Blue, developed its demonstration model and is scheduling its launch and operation on JAXA Innovative Satellite Technology Demonstration-4 by early 2023. The water resistojet thruster was equipped on 6U Lunar CubeSat, EQUULEUS, which has been waiting for the launch by Artemins 1 in 2022. The other two thrusters are in the research phase and do not yet have a flight program, but here is the latest status of their research.
Bio:
Hiroyuki Koizumi is an Associate Professor in the Department of Advanced Energy and Department of Aeronautics and Astronautics at the University of Tokyo, Japan, where he directs the Space Propulsion Laboratory and leads the development of micro-propulsion systems for microsatellites: Hodoyoshi-4, PROCYON, AQT-D, and EQUULEUS. In 2020, he started working as CTO at the space-propulsion startup Pale Blue Inc., which was founded by him and engineers who got Ph.D. at his lab. Previously, Hiroyuki Koizumi served as an Assistant Professor in the Institute of Space and Astronautical Science at JAXA from 2007 to 2011, where he was involved in Hayabusa-1 project and he was responsible for the operation of the ion engines mu-10 and the retrieval of the Hayabusa capsule at Woomera in Australia. He received a B.S. in Mechanical Engineering from Keio University, and M.S. and Ph.D. degrees in Aeronautics and Astronautics from the University of Tokyo. He was awarded the International Electric Propulsion Conference Best Paper Award (2015) and Prizes for Science and Technology, the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (2017).
Also viewed by zoom: https://umich.zoom.us/j/91746715474
Associate Professor
Department of Advanced Energy
The University of Tokyo
Visiting Associate Professor, Massachusetts Institute of Technology
About this lecture:
The University of Tokyo has been researching various micropropulsion systems using water as a propellant for diversified microsatellite missions. In this seminar, I will introduce the research and development status of these propulsion systems: 1: water ion thrusters for missions that require high specific impulse; 2: water resistojet thrusters for missions that require high and multi-directional thrusts; 3: water Hall-effect thrusters for further delta-V requirement using high-electrical power, and 4: water-metal combustion thrusters for high thrust enough for impulsive maneuvers. The first two thrusters have ongoing flight programs, and those are also introduced here. The water ion thruster is based on the design developed for xenon propellant and demonstrated in orbit in 2014 and 2015. The university spin-off company, Pale Blue, developed its demonstration model and is scheduling its launch and operation on JAXA Innovative Satellite Technology Demonstration-4 by early 2023. The water resistojet thruster was equipped on 6U Lunar CubeSat, EQUULEUS, which has been waiting for the launch by Artemins 1 in 2022. The other two thrusters are in the research phase and do not yet have a flight program, but here is the latest status of their research.
Bio:
Hiroyuki Koizumi is an Associate Professor in the Department of Advanced Energy and Department of Aeronautics and Astronautics at the University of Tokyo, Japan, where he directs the Space Propulsion Laboratory and leads the development of micro-propulsion systems for microsatellites: Hodoyoshi-4, PROCYON, AQT-D, and EQUULEUS. In 2020, he started working as CTO at the space-propulsion startup Pale Blue Inc., which was founded by him and engineers who got Ph.D. at his lab. Previously, Hiroyuki Koizumi served as an Assistant Professor in the Institute of Space and Astronautical Science at JAXA from 2007 to 2011, where he was involved in Hayabusa-1 project and he was responsible for the operation of the ion engines mu-10 and the retrieval of the Hayabusa capsule at Woomera in Australia. He received a B.S. in Mechanical Engineering from Keio University, and M.S. and Ph.D. degrees in Aeronautics and Astronautics from the University of Tokyo. He was awarded the International Electric Propulsion Conference Best Paper Award (2015) and Prizes for Science and Technology, the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (2017).
Also viewed by zoom: https://umich.zoom.us/j/91746715474
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