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  • Laser Metal Deposition Technology for LE-9 Engine

    Paper number



    Mr. Akira Ogawara, Japan, Mitsubishi Heavy Industries, Ltd.


    Mr. Masaki Adachi, Japan, Mitsubishi Heavy Industries, Ltd.


    Mr. Koichi Okita, Japan, Japan Aerospace Exploration Agency (JAXA)


    Mr. Hideto Kawashima, Japan, JAXA



    MHI has been making IR&D efforts to develop AM (Additive Manufacturing) capabilities for rocket engine parts. Based on the successful results by MHI and by JAXA itself, JAXA is researching for applying AM parts to LE-9, the next booster engine under development. One of the AM method JAXA and MHI is developing is SLM (Selective Laser Melting), or L-BBF (Lase-Powder Bed Fusion), status of which was reported in IAC-18.C4.3.3. The other is LMD (Laser Metal Deposition), or DED (Direct Energy Deposition) which is focused on in this paper. LMD is a free form building technique by injecting power into a melt pool heated by laser, and has a merit of larger size and high building speed compared to SLM. JAXA/MHI plan to apply this technology to buid material of large manifolds in order to dramatically reduce their material and machining cost. Fundamental feasibility study and tests, material data accumulation and full-scale trials were successfully completed. Now the building of the first article for Qualification Model Engine #1 was complete and it is under machining and assembling process. This paper reports JAXA/MHI’s LMD application plan to LE-9 and its development status.
    Abstract document


    Manuscript document

    IAC-19,C4,3,7,x53597.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.