The dual-bell nozzle (DBN) is a rocket nozzle concept that could provide a substantial payload gain. The present paper focuses on the impact of radial secondary injection on DBN behavior during its ascent and descent in the atmosphere. The influence of the secondary injection settling chamber (cavity) volume is discussed. The positive influence of the cavity volume on the DBN behavior during transition phases has been exposed, and its effects during retransition were shown to be negligible. The use of secondary injection allowed the transition nozzle pressure ratio to be increased by nearly 24%, and the lateral forces were reduced to less than 1% of the nozzle thrust. A first approach regarding secondary injection optimization is finally proposed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Parametrical Investigation of Transverse Injection in a Dual-Bell Nozzle During Altitude-Varying Conditions


    Contributors:

    Published in:

    Publication date :

    2023-11-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Jet Oscillation at Low-Altitude Operation Mode in Dual-Bell Nozzle

    Proschanka, Dzianis / Koichi, Yonezawa / Tsukuda, Hiroaki et al. | AIAA | 2012



    Dual-Bell Nozzle Design

    Génin, Chloé / Schneider, Dirk / Stark, Ralf | Springer Verlag | 2020

    Free access

    Dual-bell altitude compensating nozzles

    Horn, M. / Fisher, S. | NTRS | 1993


    Dual-Bell Altitude Compensating Nozzles

    M. Horn / S. Fisher | NTIS | 1993