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－　　－30Osamu IMAMURAAssociate Professor, Department of Sustainable EngineeringOsamu Imamura is an associate professor at the Department of Sustainable Engineering, College of Industrial Technology, Nihon University. Dr. Imamura received his Bachelor of Engineering in Aeronautics and Astronautics Engineering from the University of Tokyo in 2001, and his Master of Science and Doctor of Science in Advanced Energy from the University of Tokyo in 2003 and 2006, respectively. He held positions as Research Associate at the University of Tokyo from 2006 to 2008, Assistant Professor at the University of Tokyo from 2008 to 2011, and Assistant Professor at Nihon University from 2011 to 2012 before assuming his current position.One of his recent research topics is the spark ignition phenomenon in high-velocity flows1). This work is contributing to the enhancement of thermal efficiency of gasoline engines and the reduction of global CO2 emissions. The work is a continuation from the Cross-ministerial Strategic Innovation Promotion Program (SIP) innovative combustion technology project, which he joined from 2014 to 2018. This topic is continuing as the Research Association of Automotive Internal Combustion Engines (AICE) project in 2019 and 2020. Another research topic is a exible re-entry system with membrane aeroshell2). This work is a continuation from the re-entry demonstration of a nano-satellite from ISS named EGG in 2017. The demonstration of EGG was successfully nished and the next re-entry demonstration project, BEAK, is now underway and the ight is planned for 2021.His doctoral thesis was related to microgravity combustion3) and he continues to work in this eld. While serving as a research associate at the University of Tokyo, his main research topic was hypersonic ow4); thereafter, while serving as an assistant professor at the University of Tokyo, his main research topic was high-speed propulsion systems5). Dr. Imamura is a member of The Japan Society of Mechanical Engineers (JSME), Combustion Society of Japan, Society of Automotive Engineers of Japan, Inc. (JSAE), The Japan Society for Aeronautical and Space Sciences (JSASS), The American Institute of Aeronautics and Astronautics (AIAA), and The Japan Society of Microgravity Application (JASMA).Research Achievements1)A Study on the Diameter of Elongated Spark Discharge Chanel in Flow Field in the Ignition Plug for Gasoline Engine, Journal of Institute of Electrostatics Japan, Vol. 44 No. 1, pp.26-31 (2020) (in Japanese) DOI: 10.34342/iesj.2020.44.1.262)Thermal-durability Evaluation of Inflatable Structure for a Deployable Aeroshell Using ICP Heater, Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 16 No. 6, 520-527 (2018) DOI: 10.2322/tastj.16.5203)Two Droplets Combustion of n-Octane in Direct Current Electric Field under Microgravity, Combustion Science and Technology, Vol. 183 No. 8, 755-763 (2011) DOI: 10.1080/00102202.2010.5430984)Hypersonic Wind Tunnel Experiments on Icy Body and Their Potential Contribution to Astrobiology, International Review of Aerospace Engineering (I.RE.AS.E), Vol. 3 No. 2, 115-124 (2010)5)Effects of Fuel Properties on Self-ignition and Flame-holding Performances in SCRAM Jet Combustor for n-Alkane Fuels, Proceeding of the Combustion Institute, Vol. 33 No. 2, 2391-2398 (2011) DOI: 10.1016/j.proci.2010.07.070