The next generation of Mars exploration landers must precisely deliver scientific payloads to sites of interest, unlike previous Mars missions. The past missions, such as Viking and Pathfinder, performed landings to within 100s of kilometers from their targets using an unguided atmospheric entry. Guided entry of a capsule with a relatively high lift-to-drag ratio will allow landing to within 10s of kilometers from the target with a significantly more massive payload. Successful guided entry requires the use of a reaction control system (RCS) for both attitude correction and entry guidance maneuvers. Various aspects of the entry, descent and landing (EDL) system performance may be impacted by the operation of the RCS during entry. This paper illustrates the risks that arise from the gasdynamic interaction of the entry vehicle (EV) and RCS, and which require attention in the areas of aerodynamics and control, and aerothermal environments. This paper will review the methods to address the design challenges associated with integration of RCS into the atmospheric entry system. Among these challenges is the analysis of the potential for the aerodynamic interference due to both the direct jet plume impingement and more complex plume interactions with the wake flow. These interactions can result in enhanced aeroheating, requiring that a different approach to the thermal protection system (TPS) selection and sizing be used. The recent findings for Mars Science Laboratory and Mars Phoenix will be presented to help illustrate some of the phenomena. Current design solutions will be discussed.


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    Titel :

    Reaction Control System Design Considerations for Mars Entry Vehicles


    Beteiligte:
    A. A. Dyakonov (Autor:in) / M. Schoenenberger (Autor:in) / K. T. Edquist (Autor:in) / F. M. Cheatwood (Autor:in) / M. J. Wright (Autor:in)

    Erscheinungsdatum :

    2007


    Format / Umfang :

    20 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Reaction Control System Design Considerations for Mars Entry Vehicles

    Dyakonov, Artem A. / Schoenenberger, Mark / Edquist, Karl T. et al. | NTRS | 2007


    Entry System Design Considerations for Mars Landers

    Lockwood, Mary Kae / Powell, Richard W. / Graves, Claude A. et al. | NTRS | 2001


    Entry System Design Considerations for Mars Landers (AAS 01-023)

    Lockwood, M. K. / Powell, R. W. / Graves, C. A. et al. | British Library Conference Proceedings | 2001


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    BEUF, F. / KATZ, G. / KERN, R. | AIAA | 1965


    Earth entry flight test of mars entry vehicles

    Beuf, F.G. / Katz, G.D. / Kern, R.J. | Engineering Index Backfile | 1966