The Space Launch System (SLS) Block-1B vehicle includes a low thrust-to-weight upper stage, which presents challenges to heritage ascent guidance algorithms. A trade study was conducted to evaluate two alternative guidance algorithms: 1) Powered Explicit Guidance (PEG), based on a modified implementation of PEG used on the Block-1 vehicle, and 2) Optimal Guidance (OPGUID), an algorithm developed for Marshall Space Flight Center (MSFC) and used on Constellation and other Guidance, Navigation, and Controls (GN&C) projects. The design criteria, approach, and results of the trade study are given, as well as other impacts and considerations for Block-1B type missions.


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    Title :

    Closed Loop Guidance Trade Study for Space Launch System Block-1B Vehicle


    Contributors:

    Conference:

    2018 AAS/AIAA Astrodynamics Specialist Conference ; 2018 ; Snowbird, UT, United States


    Publication date :

    2018-08-21


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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