Fugine: The supermultijet-convergence engine working from startup to hypersonic scram mode and attaining simultaneously light-weight, high-efficiency, and low noise

Ken Naitoh, Kouichi Ishida, Shouhei Nonaka, Tomoaki Kubota, Yoshitaka Sagara, Taro Tamura, Taiki Hashimoto, Yoshiyuki Nojima, Masato Tanaka, Kan Yamagishi, Takuma Okamoto, Kentaro Kojima, Kenya Hasegawa, Takuya Nakai, Daiki Ikoma, Yoshiaki Tanaka

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

    15 Citations (Scopus)

    Abstract

    A new compression principle based on super multijets colliding with pulsation (Naitoh et al, 2010, 2011, 2012, 2013) has an impressive potential for engendering a new single lightweight engine 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 and combustion tests of two prototype engines, computational fluid dynamics with a chemical reaction model, and theoretical fluid mechanics clarifies the potential of high thermal efficiency and stability of this engine system, although our previous computations (Naitoh et al, 2011, 2012) are very qualitative. Especially, in this report, unsteady three-dimensional computations for this engine system extended with a piston for low subsonic Mach number M< 0.3, computations for transonic operation during various continuous cycles, and computations of combustion for M>3 are shown in details. These computations will reveal the concrete specification including the number and size of nozzles of supermultijets colliding, which is necessary for achieving high thermal efficiency over 60%, even for small engines. Then, primitive testes done for two prototype engines also indicate possibility of combustion occurence.

    Original languageEnglish
    Title of host publication50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014
    PublisherAmerican Institute of Aeronautics and Astronautics Inc.
    ISBN (Print)9781624103032
    DOIs
    Publication statusPublished - 2014
    Event50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014 - Cleveland
    Duration: 2014 Jul 282014 Jul 30

    Other

    Other50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014
    CityCleveland
    Period14/7/2814/7/30

    Fingerprint

    Plant startup
    Hypersonic aerodynamics
    Engines
    Mach number
    Jet engines
    Fluid mechanics
    Pistons
    Automobiles
    Chemical reactions
    Nozzles
    Computational fluid dynamics
    Specifications
    Hot Temperature

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Aerospace Engineering
    • Control and Systems Engineering
    • Electrical and Electronic Engineering
    • Mechanical Engineering

    Cite this

    Naitoh, K., Ishida, K., Nonaka, S., Kubota, T., Sagara, Y., Tamura, T., ... Tanaka, Y. (2014). Fugine: The supermultijet-convergence engine working from startup to hypersonic scram mode and attaining simultaneously light-weight, high-efficiency, and low noise. In 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014 American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2014-3960

    Fugine : The supermultijet-convergence engine working from startup to hypersonic scram mode and attaining simultaneously light-weight, high-efficiency, and low noise. / Naitoh, Ken; Ishida, Kouichi; Nonaka, Shouhei; Kubota, Tomoaki; Sagara, Yoshitaka; Tamura, Taro; Hashimoto, Taiki; Nojima, Yoshiyuki; Tanaka, Masato; Yamagishi, Kan; Okamoto, Takuma; Kojima, Kentaro; Hasegawa, Kenya; Nakai, Takuya; Ikoma, Daiki; Tanaka, Yoshiaki.

    50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014. American Institute of Aeronautics and Astronautics Inc., 2014.

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

    Naitoh, K, Ishida, K, Nonaka, S, Kubota, T, Sagara, Y, Tamura, T, Hashimoto, T, Nojima, Y, Tanaka, M, Yamagishi, K, Okamoto, T, Kojima, K, Hasegawa, K, Nakai, T, Ikoma, D & Tanaka, Y 2014, Fugine: The supermultijet-convergence engine working from startup to hypersonic scram mode and attaining simultaneously light-weight, high-efficiency, and low noise. in 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014. American Institute of Aeronautics and Astronautics Inc., 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014, Cleveland, 14/7/28. https://doi.org/10.2514/6.2014-3960
    Naitoh K, Ishida K, Nonaka S, Kubota T, Sagara Y, Tamura T et al. Fugine: The supermultijet-convergence engine working from startup to hypersonic scram mode and attaining simultaneously light-weight, high-efficiency, and low noise. In 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014. American Institute of Aeronautics and Astronautics Inc. 2014 https://doi.org/10.2514/6.2014-3960
    Naitoh, Ken ; Ishida, Kouichi ; Nonaka, Shouhei ; Kubota, Tomoaki ; Sagara, Yoshitaka ; Tamura, Taro ; Hashimoto, Taiki ; Nojima, Yoshiyuki ; Tanaka, Masato ; Yamagishi, Kan ; Okamoto, Takuma ; Kojima, Kentaro ; Hasegawa, Kenya ; Nakai, Takuya ; Ikoma, Daiki ; Tanaka, Yoshiaki. / Fugine : The supermultijet-convergence engine working from startup to hypersonic scram mode and attaining simultaneously light-weight, high-efficiency, and low noise. 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014. American Institute of Aeronautics and Astronautics Inc., 2014.
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    abstract = "A new compression principle based on super multijets colliding with pulsation (Naitoh et al, 2010, 2011, 2012, 2013) has an impressive potential for engendering a new single lightweight engine 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 and combustion tests of two prototype engines, computational fluid dynamics with a chemical reaction model, and theoretical fluid mechanics clarifies the potential of high thermal efficiency and stability of this engine system, although our previous computations (Naitoh et al, 2011, 2012) are very qualitative. Especially, in this report, unsteady three-dimensional computations for this engine system extended with a piston for low subsonic Mach number M< 0.3, computations for transonic operation during various continuous cycles, and computations of combustion for M>3 are shown in details. These computations will reveal the concrete specification including the number and size of nozzles of supermultijets colliding, which is necessary for achieving high thermal efficiency over 60{\%}, even for small engines. Then, primitive testes done for two prototype engines also indicate possibility of combustion occurence.",
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