Abstract In this study, we focused on a novel methodology involving the optical visualization of a hypergolic burning spray. A hypergolic propellant, comprising 95 wt% H2O2 and an amine-based fuel, was injected using pentad impingement for implementing the hypergolic reacting flow. The intense luminosity of hypergolic flame was successfully suppressed using blue light spectrum illumination and bandpass optical filtering. The hypergolic burning spray structures can be classified into reactive stream separation, normal combustion, and oxidizer partial consumption based on the dynamic interaction of impinging jets. The majority of dispersed spray propellant was consumed in developing a hypergolic diffusion flame in the vicinity of a fuel-to-oxidizer dynamic pressure ratio (DR) of 0.83, a design condition of optimum mixing. Either off-design combustion of excessive oxidizer (DR 0.83) or fuel dynamic pressure (DR 0.83) caused deformation of the burning spray structure. The results indicated that the burning spray structure is significantly affected by the dynamic pressure ratio of impinging jets. The burning rate of the propellant mixture is expected to vary significantly with respect to the hypergolic burning structure. A simple optical visualization of the reacting flow via the blue light spectrum enhanced the qualitative understanding of hypergolic combustion.

    Highlights A combination of blue light illumination and optical filter suppresses the intense luminosity of hypergolic burning spray. The hypergolic burning spray structure of and amine fuel is determined dependent on the impinging dynamic interaction. The propellant burning rate is greatly affected by the burning spray structure.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Optical visualization of hypergolic burning spray structure using blue light spectrum


    Beteiligte:
    Kim, Kyu-Seop (Autor:in) / Jung, Sangwoo (Autor:in) / Kwon, Sejin (Autor:in)

    Erschienen in:

    Acta Astronautica ; 193 ; 230-236


    Erscheinungsdatum :

    2022-01-05


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Visualization of Pulse Firing Mode in Hypergolic Bipropellant Thruster

    Fujii, Go / Daimon, Yu / Inoue, Chihiro et al. | AIAA | 2020


    Interface-Tracking Simulations of Droplet Vaporization and Burning of Hypergolic Propellants

    Tani, Hiroumi / Umemura, Yutaka / Daimon, Yu et al. | AIAA | 2016


    Hypergolic bipropellant spray combustion and flow modelling in rocket engines

    LAROSILIERE, LOUIS / LITCHFORD, RON / JENG, SAN-MOU | AIAA | 1990


    Spray Ignition Studies on a Green Hypergolic Hybrid Rocket Propellant

    Nath, Syamantak / Mallick, Lovely / Lefkowitz, Joseph | TIBKAT | 2023


    Characteristic Analysis of Spray Nozzle Injector for Low-toxic Hypergolic Thruster

    Im, HyeonJun / Jeong, Junyeong / Kwon, SeJin | AIAA | 2024