Fugine cycle theory: Predicting high efficiency of the supermultijet-convergence engine working from startup to hypersonic scram mode

Ken Naitoh, Yoshiaki Tanaka, Taro Tamura, Yoshiyuki Nojima, Kan Yamagishi, Takuma Okamoto, Hiroki Sagara, Masato Tanaka, Taiki Hashimoto, Daiki Ikoma, Takuya Nakai, Susumu Oyanagi, Takuto Kanase, Ken Ayukawa, Jumpei Tsuchiya

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)

    Abstract

    A new signle-point compression principle based on super multijets colliding with pulsation (Naitoh et al, 2010~2014) has an impressive potential for engendering a new single lightweight engine (Fugine) capable of operating over a wide range of Mach numbers from startup to the hypersonic regime with high thermal efficiency and low noise for hypersonic aircars, while this principle can also improve traditional turbofan and ram-scram jet engines and generates small engines for automobiles and personal power generators with high efficiencies. Flow experiments using a shocktube, combustion tests of two prototype engines, and computational fluid dynamics with a chemical reaction model clarify the potential of high thermal efficiency and stability of this engine system. Especially, in this report, the physical cycle theory based on compressible flow mecahnics and thermodynamics shows high thermal efficiency over 60% at the maximum, even for small engines at stoichiometric condition.

    Original languageEnglish
    Title of host publication45th AIAA Thermophysics Conference
    PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
    Pages1-18
    Number of pages18
    ISBN (Print)9781624103612
    Publication statusPublished - 2015
    Event45th AIAA Thermophysics Conference, 2015 - Dallas, United States
    Duration: 2015 Jun 222015 Jun 26

    Other

    Other45th AIAA Thermophysics Conference, 2015
    CountryUnited States
    CityDallas
    Period15/6/2215/6/26

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    ASJC Scopus subject areas

    • Aerospace Engineering
    • Mechanical Engineering

    Cite this

    Naitoh, K., Tanaka, Y., Tamura, T., Nojima, Y., Yamagishi, K., Okamoto, T., Sagara, H., Tanaka, M., Hashimoto, T., Ikoma, D., Nakai, T., Oyanagi, S., Kanase, T., Ayukawa, K., & Tsuchiya, J. (2015). Fugine cycle theory: Predicting high efficiency of the supermultijet-convergence engine working from startup to hypersonic scram mode. In 45th AIAA Thermophysics Conference (pp. 1-18). American Institute of Aeronautics and Astronautics Inc, AIAA.