Design and analysis of an atmospheric-breathing propulsion system to land large-scale spacecraft ( 10 + t ) on Mars was performed. Mg - CO 2 propulsion feasibility was analytically investigated by employing equilibrium combustion simulations, finite-rate kinetics simulations, and first-order propellant mass and inlet sizing. I SP values (based on total propellant usage) were determined to be on the order of 120–160 s for onboard subsystems having a 10-to-1 oxidizer compression ratio. This corresponds to an I SP of 600–800 s based on onboard fuel consumption. Although Mg - CO 2 mixtures have significant ignition constraints, favorable conditions were found, yielding ignition delay times of less than 1 ms, by simultaneously employing designs exploiting both large reentry Mach numbers ( M = 4 + ) and modest compression ratios. These combinations allow for combustion to occur within moderately sized combustion chambers. The first-order sizing calculations confirmed that atmospheric-breathing supersonic retropropulsion has the potential for significant mass savings relative to traditional architectures. Designs with higher oxidizer-to-fuel ratios were more mass efficient. The largest benefit was seen for small inlet area vehicles that leveraged deceleration from a terminal instantaneous burn over higher thrust throughout the trajectory.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Propulsion System Design for a Martian Atmosphere-Breathing Supersonic Retropropulsion Engine


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2015-11-05


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch







    Supersonic Retropropulsion Flight Test Concepts

    Post, Ethan A. / Dupzyk, Ian C. / Korzun, Ashley M. et al. | NTRS | 2011


    Supersonic Retropropulsion Flight Test Concepts

    Post, Ethan / Dupzyk, Ian / Dyakonov, Artem et al. | NTRS | 2011