Kenji Yoshida / Guest Professor / Division of Transdisciplinary Sciences
Department of Advanced Energy / / Aerodynamic design technology of supersonic transport aircraft

Career Summary
1981: B.Sc., Faculty of Science (Tokyo University of Science)
1983: M.Eng., School of Engineering (University of Tokyo)
1986: D.Eng., School of Engineering (University of Tokyo)
1986-1990: Research engineer (Kawasaki Heavy Industries)
1990-1996: Researcher (Gifu Technical Institute of Kawasaki Heavy Industries)
1996-2003: Researcher (National Aerospace Laboratory)
2003-2009: Senior researcher (Japan Aerospace Exploration Agency)
2009: Director of Supersonic Transport Team (Japan Aerospace Exploration Agency)
Educational Activities
Graduate school: Special Topics on Aerodynamics of Aircraft Design (2002, 2004, 2006, 2008)
Graduate school of Tohoku University: Aerodynamic Design of Supersonic Transport Aircraft (2007.4--9)
Research Activities
Research and Development on Advanced Technology of Next Generation Supersonic Transport Aircraft (1996--2007):
We conducted research and development of supersonic drag reduction technology for a next generation supersonic transport aircraft in order to improve its economical performance. We originated a natural laminar flow wing design concept and applied it to the design of JAXA's unmanned and scaled supersonic experimental airplane. Through the flight test of this airplane, we successfully validated JAXA's aerodynamic design technology. (Ref. 1--4)

JAXA's Scaled Supersonic Experimental Airplane
JAXA's Scaled Supersonic Experimental Airplane

Flight Test of Experimental Airplane
Flight Test of Experimental Airplane

1) K. Yoshida: Overview of NAL's Program Including the Aerodynamic Design of the Scaled Supersonic Experimental Airplane, Fluid Dynamics Research on Supersonic Aircraft of VKI, RTO Educational Notes 4, 1998
2) K. Yoshida and Y. Makino: Aerodynamic Design of Unmanned and Scaled Supersonic Experimental Airplane in Japan, ECCOMAS 2004
3) K. Yoshida: Flight Test Results of the Scaled Supersonic Experimental Airplane (Rocket-boosted Experimental Airplane), Japan Society of Fluid Mechanics, Nagare, Vol.25, pp.321-328 (2006) (in Japanese)
4) K. Yoshida: Supersonic Drag Reduction Technology in the Scaled Supersonic Experimental Airplane Project by JAXA, Progress in Aerospace Sciences, Vol.45, No.4--5, pp.124--146 (2009)
Other Activities
Japan Society of Fluid Mechanics
Japan Society for Aeronautical ansd Space Sciences (JSASS)
Aviation Vision Committee of JSASS(2008.7--2009.2)
Future Plan
JAXA has promoted the research and development of silent supersonic technology with environment-friendly performance, in particular focusing on advanced design technology to reduce sonic booms due to propagated shock waves generated by supersonic transport aircraft. JAXA's goal for its present research activity, including previous drag reduction technology, is to develop advanced and innovative technologies for the development of a future next generation supersonic transport aircraft.
Messages to Students
To actualize a next generation supersonic transport aircraft with economical and environment-friendly performance, new and innovative technologies are required. I hope such breakthrough technologies will be developed by young researchers having strong passion, curiosity, flexible ideas, and energy for research.