The Space System Division of Mitsubishi Heavy Industries, Ltd. (MHI) is currently
developing a new flagship launch vehicle (H3) in cooperation with the Japan Aerospace
Exploration Agency (JAXA). As a test for the development of the LE-9 first stage engine for the H3
launch vehicle, a full-scale combustion system test was implemented. Through improvement in the
injector and resonator by establishing and applying a proprietary combustion stability evaluation
tool, significant improvement in combustion stability was attained. Currently an actual engine is
being designed and fabricated based on the test results, and a combustion test of the total engine
systems is planned to be implemented in 2017.
