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[Webinar April 9th] Rolls-Royce UseCase: Capella for large complex mechanical systems

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Rolls-Royce is a pre-eminent engineering company focused on world-class power and propulsion systems.

This webinar will discuss how Rolls-Royce is using Arcadia / Capella to define the architecture of a large civil aerospace turbofan engine. MBSE promises to help manage system complexity and minimise the associated risk.

This webinar was driven by Jim Daly:
Jim Daly has nearly forty years’ experience in aerospace engine development: fuel systems; control systems; software development; process improvement and thirteen years in current role as a System Architect at Rolls-Royce, responsible for control system and whole engine architecture and since 2016 deployment of MBSE.

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[Webinar April 9th] Rolls-Royce UseCase: Capella for large complex mechanical systems

  1. 1. Private I © Rolls-Royce2019 Not Subject to Export Control Using Capella for large complex mechanical systems – a pilot study Jim Daly, Whole Engine System Architect, CEng MRAeS. 09 April 2019 The informationin this document is proprietary and confidential to Rolls-Royceand is available to authorised recipients only – copying and onward distribution is prohibited Country Classification Date UK Not listed 09 April 2019
  2. 2. Private I © Rolls-Royce2019 Not Subject to Export Control 2 ▪ Agenda ▪ Turbofan engine architecture ▪ Application of Arcadia/Capella ▪ Q & A
  3. 3. Private I © Rolls-Royce2019 Not Subject to Export Control 3 MBSE Pilot Study - Ultrafan® Power Gearbox (PGB) Oil System ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant . https://www.rolls-royce.com/~/media/Files/R/Rolls-Royce/documents/civil-aerospace-downloads/High-Res-posters/high_res_ultrafan.pdf
  4. 4. Private I © Rolls-Royce2019 Not Subject to Export Control 4 MBSE Pilot Study - Ultrafan® Power Gearbox (PGB) Oil System ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant . https://www.rolls-royce.com/~/media/Files/R/Rolls-Royce/documents/civil-aerospace-downloads/High-Res-posters/high_res_ultrafan.pdf Sub- system A Sub- system B Sub- system C Multiple interactions with diverse systems
  5. 5. Private I © Rolls-Royce2019 Not Subject to Export Control 5 Architectural de- composition ▪ Need a model or models that: - ▪ Captures interactions across system boundaries ▪ Not sequential ▪ Maximise design space ▪ Allows for iteration of design decisions Turbo-Fan Engine Oil system Sub-system 1 Sub-system 4Sub-system 3 Sub-system N Sub-system 4.1 Sub-system 4.2 https://www.rolls- royce.com/products-and- services/civil-aerospace/future- products.aspx#section-overview Nacelle ( Intake, TRU, Cold Nozzle etc.) Propulsion System (x2 ‘Power Plant’) Other Aircraft Sub- Systems https://utcaerospacesystems. com/product_gallery/nacelle -systems/ Sub-system 2
  6. 6. Private I © Rolls-Royce2019 Not Subject to Export Control 6 Architectural de- composition Other Aircraft systems▪ A Federated model, to capture and analyse the complete architectural hierarchy. ▪ Each model defining a system architecture ▪ Capella sub-system transition Plug-in Sub-system 3Sub-system 1 Sub-system N Sub-system 2 Oil System Sub-system 5 Sub-systems ……… https://utcaerospacesystems. com/product_gallery/nacelle -systems/ http://www.polarsys.org/capella/images/features/ transition_system_subsystem.png
  7. 7. Private I © Rolls-Royce2019 Not Subject to Export Control 7 Capturing Emergent Behaviour? Sub-system Transition ▪ By unconstrained functional and system modelling at the : - ▪ System Analysis ▪ Logical Architecture ▪ Physical Architecture Oil System Model New: - Functions, Actor systems, Interactions
  8. 8. Private I © Rolls-Royce2019 Not Subject to Export Control 8 Iterative system development? Other Aircraft systems Sub-system 3Sub-system 1 Sub-system N Sub-system 2 Oil System Sub-system 5 Sub-systems ……… https://utcaerospacesystems. com/product_gallery/nacelle -systems/ http://www.polarsys.org/capella/images/features/ transition_system_subsystem.png
  9. 9. Private I © Rolls-Royce2019 Not Subject to Export Control 9 1.1 Ideal PA View + Emergent Functions view + Iterative system development? ▪ Ideal ‘prime’ functions transitioned to Sub-system from Whole Engine PA Turbofan Engine Model 1. Ideal PA view Sub- system 5 Sub- system 1 Sub- system 4 Sub- system N ▪ Additional Sub-system Functionality, to deal with emergent behaviour, Identified & iterated back up to create 2nd PA view ▪ Sub-system emergent functions allocated to emergent systems and transitioned to dedicated models ▪ New Sub-system interactions (and associated Functions) identified & iterated back up to be included in WE model to become definitive PA view. Emergent Sub-system + 1.1.1 Ideal PA + Emergent Functions + Emergent System view Multiple sequential PA Views to capture iterative system development!
  10. 10. Private I © Rolls-Royce2019 Not Subject to Export Control 11 N.1 Dedicated O/S View + Emergent Functions view + Iterative system development – Whole Engine Model N. Dedicated O/S view Sub- system 5 Sub- system 1 Sub- system 4 Sub- system N Emergent Sub-system + N.1.1 Dedicated + Emergent Functions + Emergent System view ▪ CS-E 510 ▪ (2) The following effects must be regarded as hazardous Engine Effects: (i) Non-containment of high-energy debris, Dedicated PA Views to capture event driven functionality
  11. 11. Private I © Rolls-Royce2019 Not Subject to Export Control 12 System architecture definition ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant . ▪ Federated model – Sub-system transition Plug-in ▪ Emergent behaviour – Unconstrained addition of Functions, systems, exchanges across the SA-LA-PA ▪ Iterative system development – Multiple PA views.
  12. 12. Private I © Rolls-Royce2019 Not Subject to Export Control 13 Requirements integration ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant ▪ PVMT Plug-in .
  13. 13. Private I © Rolls-Royce2019 Not Subject to Export Control 14 Requirements integration ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant ▪ PVMT Plug-in .
  14. 14. Private I © Rolls-Royce2019 Not Subject to Export Control 15 Requirements integration Validation (analytical analysis e.g. Simulink) ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant ▪ PVMT Plug-in .
  15. 15. Private I © Rolls-Royce2019 Not Subject to Export Control 16 Requirements integration Capella <-> DOORS Integration ▪ In the short term, and for some legacy projects, linkage between Capella and DOORS ▪ Capella <-> DOORS Plug-in (RR)
  16. 16. Private I © Rolls-Royce2019 Not Subject to Export Control 17 To be continued…………. Integration with Safety ▪ Objectives - (Deliverables): ▪ System architecture for PGB Oil System ▪ Integrated requirements. ▪ Integration with Safety process – ARP4754A compliant .
  17. 17. Private I © Rolls-Royce2019 Not Subject to Export Control 18 Further development topics ▪ Full integration with Safety process ▪ Model data exchange – SysML Import/export ▪ Integration with Mathworks Simulink ▪ Integration of Trade Studies ▪ Variants (libraries)
  18. 18. Private I © Rolls-Royce2019 Not Subject to Export Control 19 ▪ Q & A ….

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