1. Developing and Distributing a CubeSat Model-Based Systems Engineering (MBSE) Reference Model – Status Copyright © 2016 INCOSE SSWG. All rights reserved 1 32nd Space Symposium D. Kaslow david.kaslow@gmail.com International Council on Systems Engineering Space Systems Working Group (SSWG)

2. Agenda Project Objectives and Team SSWG Challenge Project CubeSat Reference Model Development and Distribution CubeSat Reference Model Next Steps References Copyright © 2016 INCOSE SSWG. All rights reserved 2 32nd Space Symposium

3. Project Objectives Demonstrate MBSE methodology as applied to a CubeSat mission Demonstrate Object Oriented Design Method (OOSEM) as applied to a CubeSat mission Copyright © 2016 INCOSE SSWG. All rights reserved Provide a CubeSat Reference Model that CubeSat teams can use as a starting point for their mission-specific CubeSat model Demonstrate the application of the model in assessing measures of performance in the concept life cycle phase 3 32nd Space Symposium

4. SSWG Team Aerospace students, professors, engineers, s/w developers From government, industry, academia, tool providers Email to be included on the email reflector list: david.kaslow@gmail.com Copyright © 2016 INCOSE SSWG. All rights reserved 4 32nd Space Symposium Telecons every Friday at 1pm east coast time Meeting materials and links to meeting recordings in Google docs Conference papers posted in INCOSE SSWG Web Site http://www.incose.org/ChaptersGroups/WorkingGroups/government/sp ace-systems

5. Copyright © 2016 INCOSE SSWG. All rights reserved SSWG Challenge Project 5 32nd Space Symposium

6. Model-Based Systems Engineering (MBSE) Copyright © 2016 INCOSE SSWG. All rights reserved Model Based Systems Engineering [1] Formalized application of modeling to support requirements, design, analysis, validation, and verification 6 INCOSE Object-Oriented Systems Engineering Method [3] Interfaces with Other Models System Modeling Tools Systems Modeling Language (SysML) [2] A graphical modeling language for modeling complex systems including hardware, software, information, personnel, procedures, and facilities 32nd Space Symposium

7. SysML Copyright © 2016 INCOSE SSWG. All rights reserved 32nd Space Symposium 7 Model Elements Blocks Actors Flow Interfaces Signals Ports … Diagrams are views of the underlying system model Behavior Diagrams Use Case Activity Sequence State Machine Structure Diagrams Block Definition Internal Block Block Properties Parts References Values Constraints Operations Receptions … A Block is the basic unit of structure Parametric Diagram Package Diagram Requirements Diagram SysML is a language It is not a methodology It is not a tool

8. Project Phases Current Efforts Phase 4 Develop a CubeSat MBSE Ref. Model [8] [9] [10] Recent Efforts Phase 3 Enterprise Modeling for CubeSats [6] RAX CubeSat Model Trade Studies [7] Phase 1 CubeSat Framework Prelim. RAX Model [4] Phase 2 RAX Behavior Modeling Power, Comm, State [5] Copyright © 2016 INCOSE SSWG. All rights reserved INCOSE MBSE Challenge Project Initiated 2007 INCOSE SSWG 2007-2010 Phase 0 Modeled a Space System in SysML Hypothetical FireSat - SMAD 8 32nd Space Symposium

9. Copyright © 2016 INCOSE SSWG. All rights reserved CubeSat Reference Model Development and Distribution 9 32nd Space Symposium

10. Model Development Out Reach Working Groups Symposiums Workshops SSWG Team CubeSat Reference Model - Logical Life Cycles Conception to Retirement Mission Stakeholders Needs Objectives Measures of Effectiveness Constraints Model Scope Copyright © 2016 INCOSE SSWG. All rights reserved Foundations INCOSE Sys. Eng. Handbook NASA Sys. Eng. Handbook Practical Guide To SysML … 10 32nd Space Symposium

11. Model Distribution Users CubeSat Reference Model CubeSat Team Mission Specific CubeSat Model Classroom Example CubeSat Model SSWG CubeSat Ref Model - Logical Video of Model Walk-Through Copyright and License Copyright © 2016 INCOSE SSWG. All rights reserved Distribution MagicDraw ZIP File XMI File HTML … Feedback 11 32nd Space Symposium

12. Copyright © 2016 INCOSE SSWG. All rights reserved CubeSat Reference Model 12 32nd Space Symposium

13. Hierarchy Copyright © 2016 INCOSE SSWG. All rights reserved 32nd Space Symposium 13

14. Stakeholders Copyright © 2016 INCOSE SSWG. All rights reserved 14 32nd Space Symposium

15. Guidance and Regulations Copyright © 2016 INCOSE SSWG. All rights reserved 15 32nd Space Symposium

16. Cal Poly CubeSat Design Specification Copyright © 2016 INCOSE SSWG. All rights reserved c 16 Cal Poly University, San Luis Obispo, in conjunction with Stanford University, created and maintains a CubeSat Design Specification (CDS) containing requirements that are generally applicable to any CubeSat mission Adhering to the requirements and processes defined in the CDS facilitates integration of a CubeSat with the launch vehicle, and improves coordination with the launch service provider The CDS has traditionally been maintained as a textual document and is published in PDF format In order to enable use of the CDS in a model-based environment, the current version of the spec has been converted into a SysML model 32nd Space Symposium

17. CDS Model Organization Copyright © 2016 INCOSE SSWG. All rights reserved c 17 32nd Space Symposium

18. Stakeholder Mission Needs, Objectives, MOEs Copyright © 2016 INCOSE SSWG. All rights reserved 18 System Rqt deriveReqt Subsys Rqt deriveReqt Mission Use Case refine System Use Case refine trace Mission Constraint Mission Need Mission Objective Measure of Effectiveness trace refine Measures of Performance Technical Perf. Measure trace Mission Rqt trace 32nd Space Symposium

19. CubeSat Copyright © 2016 INCOSE SSWG. All rights reserved 32nd Space Symposium 19

20. CubeSat Ground System Copyright © 2016 INCOSE SSWG. All rights reserved 32nd Space Symposium 20

21. Copyright © 2016 INCOSE SSWG. All rights reserved Next Steps and References 21 32nd Space Symposium

22. Next Steps Develop model glossary / ontology Create example mission specific model: Stakeholder needs, objectives, constraints Mission and system requirements Measure of Effectiveness (MOE) Measure of Performance (MOP) Demonstrate validation of MOEs and MOPs Provide the model to university aerospace program Continue to refine the model Verify correctness of model Coordinate with INCOSE on copyright and license Develop release plan and procedure Copyright © 2016 INCOSE SSWG. All rights reserved 22 32nd Space Symposium

23. References [1] Systems Engineering Vision 2020, INCOSE –TP_2004-004-02, ver. 2/03,September 2007. [Online]. Available: http://oldsite.incose.org/ProductsPubs/pdf/SEVision2020_20071003_v2_03.pdf http://oldsite.incose.org/ProductsPubs/pdf/SEVision2020_20071003_v2_03.pdf [2] Object Management Group (OMG), OMG Website. [Online]. Available: http://www.omgsysml.org/http://www.omgsysml.org/ [3] Object Management Group (OMG), OMG Wiki. [Online]. Available: http://www.omgwiki.org/MBSE/doku.php?id=mbse:incoseoosem http://www.omgwiki.org/MBSE/doku.php?id=mbse:incoseoosem [4] S. Spangelo, D. Kaslow, C. Delp, B. Cole, L. Anderson, E. Fosse, B. Gilbert, L. Hartman, T. Kahn, and J. Cutler, “Applying Model Based Systems Engineering (MBSE) to a Standard CubeSat,” in Proceedings of IEEE Aerospace Conference, Big Sky, MT, March 2012. [5] S. Spangelo, L. Anderson, E. Fosse, L Cheng, R. Yntema, M. Bajaj, C. Delp, B. Cole, G. Soremekun, D. Kaslow, and J. Cutler, “Model Based Systems Engineering (MBSE) Applied to Radio Explorer (RAX) CubeSat Mission Operational Scenarios,” Proceedings of IEEE Aerospace Conference, Big Sky, MT, March 2013. [6] L. Anderson, B. Cole, R. Yntema, M. Bajaj, S. Spangelo, D. Kaslow, C. Lowe, E. Sudano, M. Boghosian, R. Reil, S. Asundi, and S. Friedenthal, “Enterprise Modeling for CubeSats,” Proceedings of IEEE Aerospace Conference, Big Sky, MT, March 2014. Copyright © 2016 INCOSE SSWG. All rights reserved 23 32nd Space Symposium

24. References [7] D. Kaslow, G. Soremekun, H. Kim, S. Spangelo, “Integrated Model-Based Systems Engineering (MBSE) Applied to the Simulation of a CubeSat Mission”, Proceedings of IEEE Aerospace Conference, Big Sky, MT, March 2014. [8] D. Kaslow, L. Anderson, S. Asundi. B. Ayres, C. Iwata, B. Shiotani, R. Thompson, “Developing a CubeSat Model-Based System Engineering (MBSE) Reference Model – Interim Status”, Proceedings of IEEE Aerospace Conference, Big Sky, MT, March 2015. [9] D. Kaslow, L. Anderson, S. Asundi. B. Ayres, C. Iwata, B. Shiotani, R. Thompson, “Developing and Distributing a CubeSat Model-Based System Engineering (MBSE) Reference Model ”, Proceedings of the 31 st Space Symposium, Colorado Springs, CO, April 2015. [ 10] D. Kaslow, B. Ayres, M.J Chonoles, S. Gasster, L. Hart, C. Massa, R. Yntema, B. Shiotani “Developing and Distributing a CubeSat Model-Based System Engineering (MBSE) Reference Model – Interim Status #2”, Proceedings of IEEE Aerospace Conference, Big Sky, MT, March 2016. Copyright © 2016 INCOSE SSWG. All rights reserved 24 32nd Space Symposium