State-of-the-art Mars entry systems havemodulated the bank angle (σ) on blunt-body entry capsulesto steer, providing hypersonic trajectory control. These bank-angle steering vehicles have provided successful entries forboth the Mars 2020 and Mars Science Laboratory missions, achieving landing accuracy on the order of several kilometers. Conventional guidance algorithms for these vehicles choose the bank magnitude to control the longitudinal motionand periodically change the sign of the bank angle to managethe lateral error through open-loop bank reversals. While these bank reversals are relatively simple to implement, they can inject error into the trajectory. More sophisticated steering commands simultaneously considering the lateral and longitudinal motion can potentially obtain higher entry performance, although the high coupling over the lateral and longitudinal motion remains. Bank-angle steering systemsfor Mars entries have achieved a trim angle of attack (α) for steering by offseting the center-of-gravity (CG) usinginert ballast mass and payload packaging. This ballast mass can be a significant, relative to the mass of the payload, reducing the payload mass. Lastly bank-angle steering vehicles typically modulate the bank angle using reactioncontrol system (RCS) thrusters, which can interfere with thehypersonic wake behind the entry vehicle, potentially limitingcontrollability.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Comparison of Mars Entry Performance Using Bank-Angle and Alpha-Beta Steering Systems


    Beteiligte:
    D. L. Engel (Autor:in) / Z. R. Putnam (Autor:in) / R. M. Woollands (Autor:in) / S. Dutta (Autor:in)

    Erscheinungsdatum :

    2024


    Format / Umfang :

    31 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Flight Performance Comparison of Bank-Angle Steering and Alpha-Beta Steering for Mars Entry Systems

    Daniel L Engel / Zachary R Putnam / Robyn M Woollands et al. | NTRS


    Optimal Control Comparison of Bank-Angle and Alpha-Beta Steering for Mars Entry Systems

    Engel, Daniel L. / Putnam, Zachary R. / Woollands, Robyn M. et al. | AIAA | 2025


    Optimal Mars Entry Trajectories for Bank-Angle and Alpha-Beta Steering

    Engel, Daniel L. / Putnam, Zachary R. / Woollands, Robyn M. et al. | IEEE | 2024


    Comparison of Flap and Bank-Angle Steering for Mars Entry

    Engel, Daniel L. / Skolnik, Nathaniel L. / Putnam, Zachary R. | AIAA | 2022


    Deep-operator-network-based Mars entry parametric bank angle profile optimization

    TANG, Bo / GUO, Yanning / GONG, Youmin et al. | Elsevier | 2025

    Freier Zugriff