Axial-injection end-burning hybrid rocket (AIEB-HR) is a nonconventional hybrid rocket, employing multiport fuel consumed along the axial direction by a diffusion flame established at the end of each port. The research aims to study the fuel axial regression rate using liquid oxygen at different pressures. A total of 21 firing tests performed in a pressure-controlled chamber with two different multiport grain geometries are discussed. Three different modes—regression mode, flame spread mode, and transition mode—were observed. As compared to the properties of GOX combustion, the flame spread is inhibited by the latent heat of LOX. An experimental correlation of the regression rate with the pressure, mass flow rate, and port diameter is obtained. The results show that the regression rate strongly depends on the pressure and is mostly insensitive to the other parameters, similar to solid propellants. The O / F ratio obtained in this study was much higher than the optimal ratio. The optimal oxidizer-to-fuel-mass ratio ( O / F ) requires a chamber pressure of approximately 5.7 MPa, oxidizer port velocities of 1.0 m/s, and a high filling rate of around 0.985.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fuel Regression Characteristics of Axial-Injection End-Burning Hybrid Rockets Using LOX


    Contributors:


    Publication date :

    2025-03-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    High Pressure Fuel Regression Characteristics of Axial-Injection End-Burning Hybrid Rockets

    Saito, Yuji / Kimino, Masaya / Tsuji, Ayumu et al. | AIAA | 2019


    FUEL REGRESSION CHARACTERISTICS OF AXIAL-INJECTION END-BURNING HYBRID ROCKETS USING NITROUS OXIDE

    Fukada, Mai / Hayasaka, Hiroki / Suzuki, Sho et al. | TIBKAT | 2022


    Necessary Condition of Regression Mode in Axial-injection End-burning Hybrid Rockets

    Fukada, Mai / Suzuki, Sho / Hayasaka, Hiroki et al. | AIAA | 2023


    Necessary Condition of Regression Mode in Axial-Injection End-Burning Hybrid Rockets

    Fukada, Mai / Suzuki, Sho / Hayasaka, Hiroki et al. | TIBKAT | 2023