Environmental Control and Life Support System (ECLSS) architecture selection has profound implications for mission cost and mass extending far beyond the ECLSS itself. Similarly, other mission architecture decisions – particularly involving transportation systems – can influence optimal ECLSS architectures. Loop closure influences requirements for water, oxygen, and other consumables. System maintainability and reliability influences spares mass and risk. System, consumables, and spares mass interact with transportation system architectures, including propellant demands and propulsion element sizing. All these interactions with other systems must be considered when evaluating ECLSS options. Analyses that focus only on maximizing ECLSS loop closure – or minimizing ECLSS mass, or minimizing ECLSS life cycle cost – may lead to sub-optimal or even counterproductive system architecture and investment decisions at the mission level. For example, an ECLSS architecture that minimizes ECLSS life cycle cost but results in excessively high logistics mass could lead to significantly increased transportation system costs or make interplanetary transportation infeasible. Increased loop closure could result in higher development costs and higher mass if system/spares mass increases outweigh consumables reduction. In addition, systems mass and consumables mass are not directly comparable and have different impacts on propellant requirements, as consumables mass changes over the course of the mission. This paper presents an integrated analysis examining the overall impact of different ECLSS and transportation architectures on Earth departure mass for a crewed Mars mission, including the habitat and transportation systems as well as consumables, spares, and propellant. Key observations are discussed, along with opportunities for further sensitivity analysis and model development. Overall, ECLSS development activities must consider their impacts at the mission level, as part of an integrated system, rather than in isolation.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Integrated Trajectory, Habitat, and Logistics Analysis and Trade Study for Human Mars Missions


    Beteiligte:
    A. C. Owens (Autor:in) / C. A. Jones (Autor:in) / W. M. Cirillo (Autor:in) / J. J. Klovstad (Autor:in) / E. L. Judd (Autor:in) / P. R. Chai (Autor:in) / R. G. Merrill (Autor:in) / N. E. Piontek (Autor:in) / C. Stromgren (Autor:in) / J. Cho (Autor:in)

    Erscheinungsdatum :

    2020


    Format / Umfang :

    18 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    INTEGRATED TRAJECTORY, HABITAT, AND LOGISTICS ANALYSIS AND TRADE STUDY FOR HUMAN MARS MISSIONS

    Owens, Andrew / Jones, Christopher A. / Cirillo, William et al. | TIBKAT | 2020


    Integrated Trajectory, Habitat, and Logistics Analysis and Trade Study for Human Mars Missions

    Owens, Andrew / Jones, Christopher A. / Cirillo, William et al. | AIAA | 2020


    Integrated Trajectory, Habitat, and Logistics Analysis and Trade Study for Human Mars Missions

    Andrew C Owens / Christopher A Jones / William M Cirillo et al. | NTRS



    Integrated Trajectory, Habitat, and Logistics Analysis and Trade Study for Human Mars Missions

    Andrew C Owens / Christopher A Jones / William M Cirillo et al. | NTRS