Following the definition of an on-board software reference architecture in COrDeT2 and the definition of the Integrated modular avionics (IMA) for space architecture, this study intends to consolidate the open points identified in COrDeT2 and align with the IMA-SP results using as guiding input the outputs and recommendations of the SISTORA (Study on IMA Space - TSP in the OBSW Reference Architecture Context) activity. The activity shall further support the two sub-workings groups of SAVOIR, namely SAVOIR-IMA and SAVOIR-FAIRE.

Address the open points raised in COrDeT2: i) open points in final report, ii) integrate OBCP building block interface specification from parallel GSTP5 element 2 activities, iii) define unique meta-model of component model and add semantic description, iv) incorporate feedback from OBSW reference architecture consolidation activities (GSTP5 element 2 activities).Harmonize the OBSW reference architecture specification with the outcomes from IMA-SP activity by implementing the recommendations from SISTORA activity. This task will also contribute to the SAVOIR-IMA and SAVOIR-FAIRE working groups objectives.Finally a report shall be provided as introduction to the OBSW ref arch (aligning with IMA-SP) in addition to the updated OBSW ref arch specification.