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M. Medina León
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A Mission-Agnostic Spacecraft System Simulator Toolkit
Development and Implementation for the ESA EnVision Mission
Master thesis
(2025)
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M. Medina León, J. Vennekens, J. Bouwmeester, A. Rugina, S. Speretta, P.P. Sundaramoorthy
Within the context of scientific planetary missions – characterized by multi-instrument systems with demanding operational timelines – there is a need for more detailed, system-level analyses grounded in simulation rather than simplified analytical sizing methods. Growing accessibility and proficiency in high-level programming are shifting the paradigm from monolithic software solutions to bespoke script-based analysis in the spacecraft systems engineering process.
This thesis, conducted within the ESA EnVision project team at ESTEC, presents the development, implementation and evaluation of PAS3: a Python toolkit for Accessible SPICE-based Spacecraft Simulations. PAS3 streamlines the creation of ad-hoc, simulation-backed models for discipline-specific analysis, for any planetary mission in its implementation phase. It integrates Andrew Annex’ SpiceyPy, a procedural wrapper of NASA/JPL’s NAIF SPICE toolkit, inside an object-oriented framework extending its accessibility to non-developers. The toolkit was used to develop models for EnVision’s attitude, instrument and platform thermals, and power generation, as well as an interactive web-based 3D mission visualization.
PAS3 is an open-source package under the Permissive European Space Agency – ESA Software Community Licence and is available on the European Space Software Repository. ...
This thesis, conducted within the ESA EnVision project team at ESTEC, presents the development, implementation and evaluation of PAS3: a Python toolkit for Accessible SPICE-based Spacecraft Simulations. PAS3 streamlines the creation of ad-hoc, simulation-backed models for discipline-specific analysis, for any planetary mission in its implementation phase. It integrates Andrew Annex’ SpiceyPy, a procedural wrapper of NASA/JPL’s NAIF SPICE toolkit, inside an object-oriented framework extending its accessibility to non-developers. The toolkit was used to develop models for EnVision’s attitude, instrument and platform thermals, and power generation, as well as an interactive web-based 3D mission visualization.
PAS3 is an open-source package under the Permissive European Space Agency – ESA Software Community Licence and is available on the European Space Software Repository. ...
Within the context of scientific planetary missions – characterized by multi-instrument systems with demanding operational timelines – there is a need for more detailed, system-level analyses grounded in simulation rather than simplified analytical sizing methods. Growing accessibility and proficiency in high-level programming are shifting the paradigm from monolithic software solutions to bespoke script-based analysis in the spacecraft systems engineering process.
This thesis, conducted within the ESA EnVision project team at ESTEC, presents the development, implementation and evaluation of PAS3: a Python toolkit for Accessible SPICE-based Spacecraft Simulations. PAS3 streamlines the creation of ad-hoc, simulation-backed models for discipline-specific analysis, for any planetary mission in its implementation phase. It integrates Andrew Annex’ SpiceyPy, a procedural wrapper of NASA/JPL’s NAIF SPICE toolkit, inside an object-oriented framework extending its accessibility to non-developers. The toolkit was used to develop models for EnVision’s attitude, instrument and platform thermals, and power generation, as well as an interactive web-based 3D mission visualization.
PAS3 is an open-source package under the Permissive European Space Agency – ESA Software Community Licence and is available on the European Space Software Repository.
This thesis, conducted within the ESA EnVision project team at ESTEC, presents the development, implementation and evaluation of PAS3: a Python toolkit for Accessible SPICE-based Spacecraft Simulations. PAS3 streamlines the creation of ad-hoc, simulation-backed models for discipline-specific analysis, for any planetary mission in its implementation phase. It integrates Andrew Annex’ SpiceyPy, a procedural wrapper of NASA/JPL’s NAIF SPICE toolkit, inside an object-oriented framework extending its accessibility to non-developers. The toolkit was used to develop models for EnVision’s attitude, instrument and platform thermals, and power generation, as well as an interactive web-based 3D mission visualization.
PAS3 is an open-source package under the Permissive European Space Agency – ESA Software Community Licence and is available on the European Space Software Repository.