1. © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Core concepts from European Space Data Modeling Approaches as input to the RfP Harald Eisenmann Airbus DS, Hans Peter de Koning ESA 8 th December 2015 OMG Technical Meeting La Jolla 2015, 6 th – 11 th December 2015

2. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Experience from European Data Modeling Approaches as “Other Industry Ontology” input 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 2 ECSS-E-TM-10-23 ECSS-E-TM-10-25 ESA Virtual Spacecraft Design EGS-CC Airbus internal activities

3. © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Objective of the ECSS-E-TM-10-23/5 data models was to fill a gap in the overall data management approach

4. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. The basis for scoping is to identify SE activities, in the actual context where SE is being performed, which directly leads to… OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 Domain Discipline Engineering Domain Discipline Engineering Customer Supplier Systems Engineering Configuration Control Change Management System Architecture Interdisciplinary Integration & Coordination System Verification Consideration of Life-Cycle Aspects Assumption Management Budgets and Budget Tracking Concept of Operations Functional Decomposition Requirements Engineering System Trades Domain Discipline Engineering Domain Discipline Engineering 7 December 2015 4

5. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. … the identification of data, which is underlying the SE process and forms the  System Model OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 5 Functional Decomposition Data Operational Concepts Data System Architecture Data System Verification Data Product Structure Product Tree Configuration Tree Assembly Tree Items As Built Interdisciplinary Shared Data Mechanical Engineering Data Electrical Engineering Data Monitoring and Control Data OBSW Engineering Data AIT Engineering Data AOC Engineering Data Key System Properties (budget, margin, assumptions) (Meta-) data for configuration management (Meta-) data for change management Domain Discipline Data Domain Discipline Data Domain Discipline Data Requirements Data System Architecture / Specification Tool SysML, Capella, MEGA Requirements Engineering Tool MS Excel Verification Database Scope of System Data Repository according to ECSS E-TM-10-23 and 25 PDM 7 December 2015

6. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. ECSS-E-TM-10-23 “Space System Data Repository” provided the scoping and definition of the underlying conceptual data model 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 Cost reduction for DB Improve Quality of Data Timely arrival of DB Improve Tool Integration ECSS-E-TM-10-25 adopted the 10-23 ideas for concurrent design facilities 6

7. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Agency System Prime Suppliers The concepts delivered by ECSS E-TM-10-23/5 have been the major driver for new solutions along the lifecycle 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 0ABCDEF CDF ESA-led EGS-CC ESA Virtual Spacecraft Design (Approach Validation) Airbus DS RangeDB SystemAvionics Operation Life Cycle Phase ÊSA CDF CDF supporting conceptual design VSD as MBSE E2E demonstrator – blue print RangeDB is the operational realization EGS-CC shared G/S segment component CDF supporting conceptual design VSD as MBSE E2E demonstrator – blue print RangeDB is the operational realization EGS-CC shared G/S segment component 7

8. © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Requirements towards the future system modeling environment

9. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. The data model decomposition follows the data produced along the system development life-cycle 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 9

10. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Sample range of multi-disciplinary aspects supported by 10-23 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 10 Electrical Interfaces Operational Procedures Geometric Aspects Functional Aspects Product Structure Operational Modes Monitoring & Control Data

11. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. In 10-23 “system element” is the core of the CDM – identifying “physical” items of interest along the life-cycle 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 11

12. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Product structure as the needed element to represent the proper system model along the system life-cycle, with discipline aspects 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 12 System Detailed Design (Configuration) System Architectural Design Software Architecture Product Tree, Specification Model Configuration Model Assembly Models, As-built Models Mechanical Architecture Electrical Architecture Operational Architecture Software Design Mechanical Design Operational Design Flight Model #1 System Assembly Flight Model #2 System Assembly

13. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Data modeling related requirements The conceptual data model shall be defined such that it can be automatically transformed into a runtime representation comprising Definition of data structures, relations and properties Definition of model transformation / and mapping rules Definition of constraints on the data structures Definition of functional dependencies of data model For the CDM a single configuration control system shall be in place Standardization of function-oriented data models like consistency check, version control, …, view models For official versions of the CDM free data sets for conformance testing shall be available (  cax-if.org) Widely share quite practical, but essential means to make integration happen e.g. like Long term stable object identifier UUID v4, identifier mapping, … 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 13

14. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Requirements related to the utilization of the conceptual data model 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 Conceptual Data Model (CIM) Implemented Data Model (PSM) (Source code) Implemented Data Model (PSM) (Source code) Logical Data Model (PIM) Model Transformation and Technology binding Code generation Implementation Constraint Function dependent Data models Implemented Function dependent Data models Formal specification of Data with end user meaning... Considering implementation languages and constraints Implemented in the target tool, framework Conceptual issues The CDM shall be defined in a way, allowing the correct and maintainable implementation of the CDM – by means of MDA Function dependent data model shall be standardized with the SysML 2 standard Transformation of all elements of the CDM (class, CC, transformation, propagation) 14

15. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Data Management Framework allowing the automated configuration from the conceptual data model 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 15 Conceptual Data Model Data Representation and Manipulation Data Representation Data API Consistency Checking Data Transformation Versioning Query Scripting Data Organization Comparison Branching / Merging Data Propagation MMI The runtime framework shall allow the automated configuration from an CDM. The runtime framework shall have no dependencies to the CDM Some functions might have the ability to be re-configured from the data model Ownership Data Patching Smart Editing Reporting

16. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Methodology for the data modeling 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 16 Analysis of the Domain CDM Requirements Definition Conceptual Data Model Definition Preliminary validation of CDM Operational Implementation Validation Existing Models Functional Requireme nts System Concept Definition Sample Data Requireme nts Data Model Preliminary Validation Set Validation Data Set For the data modeling a dedicated data modeling methodology shall be defined and applied covering Data model specification from the end user perspective Data model definition with an appropriate language Data model validation Sample from EGS-CC

17. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Meta Model Architecture, including tailoring (kind of profiling) 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 17 SysML v2 CDM SysML v2 CDM Tailoring for Automotive SysML v2 CDM Tailoring for Aeronautics SysML v2 CDM Tailoring for Space SysML v2 CDM Tailoring for ECSS SysML v2 CDM Tailoring for Airbus … Generic CDM Domain Specifc Tailorings Company specific Tailorings

18. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Requirements related to the runtime configuration of the modeling framework (kind of model-libraries) 7 December 2015 18 Database Semantic Data Model Standard Semantic Data Model “Master Definition of Concepts” addresses “what” not “how” Derived Logical and Physical Data Models “Reference Data Libraries (RDLs) “ Runtime loadable predefined objects, including QUDV and Categories Software Implementations Tool Database Automated transformations Interoperable tools and databases (including adapters around existing tools) Generated Runtime use OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 It shall possible to define RDLs It shall be possible to configure the modeling framework with the RDL, without need for programming It shall be possible to model the RDL in the same environment as the CDM RDL is similar to UML/SysML ModelLibrary

19. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Engineering Workbench Realizing MBSE – for multi-disciplinary aspects requires to advance the transverse data management functions OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 Sharing and Exchange of Data PDM / PLM Engineering Workbench Change Control System Engineering Avionics Mechanical Engineering AIT Systems Engineering Workbench Control Engineering Workbench Operational Engineering Workbench Electrical Engineering Workbench Mechanical Engineering Workbench AIT Engineering Workbench FSW Engineering Workbench Data Management 7 December 2015 19

20. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Engineering Workbench The fine-grained model management requires a conceptual data model, to manage consistency across the domains / life-cycle 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 20 Sharing, exchange and versioning of (detailed ) data Configuration Control and change management Engineering Workbench Black box Data Management System Engineering Avionics Mechanical Engineering AIT Systems Engineering Workbench Control Engineering Workbench Operational Engineering Workbench Electrical Engineering Workbench Mechanical Engineering Workbench AIT Engineering Workbench FSW Engineering Workbench White box Data Management Conceptual Data Model Data set is a released set of data used for data organization and version control (  close to PLM)

21. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Relation of the different layers of data management 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 21 It shall be possible to organize data items into data sets It shall be possible to create data sets according to process constraints It shall be possible to merge, split data sets Data sets shall be loaded along with the model editing constraints

22. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. In a multi-disciplinary model clear ownership and access rights are needed as integral part of the modeling environment Fine-grained explicit Ownership of (or Responsibility for) model elements is needed up to individual value properties Together with Roles provides basis for access rights management In SysML v1 Packages are used, but that limits Ownership to course-grained physical partitioning of model In E-TM-10-25 / OCDT following model is proven to work well: Person (member of Organization) represents human user (modeled compliant with LDAP) DomainOfExpertise represents discipline / area of expertise Participant represents a Person-DomainOfExpertise combination in a project team / for a model One Person may be responsible for more than one DomainOfExpertise in a given team More than one Participant may represent one DomainOfExpertise Ownership by DomainOfExpertise is stable in the long term, independent of Person that happens to be on the team at some point in time PersonRole to define access rights at Modeling Environment level ParticipantRole to define access rights at Model level 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 22

23. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Example E-TM-10-25 data model for ownership and access rights 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 23

24. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. To support comprehensive but scalable capture of analysis / test results (or input) data: “DataCube” concept 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 24 Developed late ‘90s in ESA STEP-NRF, EC GEM project, and ISO 10303-51 Rich semantic data structure to store large amount of discrete values Each cell of the DataCube is a scalar or tensor property (= quantity value) for a specific combination of observable element, value property and state Designed for efficient storage and retrieval of massive amounts of structured data Also mapped to / implemented in open source HDF5 data format, see https://www.hdfgroup.org/HDF5/ https://www.hdfgroup.org/HDF5/ states observable elements value property types typically: sampled time or frequency

25. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Evolved QUDV model in E-TM-10-25 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 25 Separates ValueProperty from ValuePropertyType So that the types can be defined in a RDL/ModelLibrary and easily re-used by modelers QuantityKind integrated with Boolean, Enum, Text, Date/Time types Adds proper support for Measurement Scale (in addition to Measurement Unit): RatioScale, CyclicRatioScale, IntervalScale, OrdinalScale, LogarithmicScale Compound and Array Value Property Type Allows representation of (nested) compound value properties, vectors, matrices, higher order tensors URI Value Property “ElementReferencePropertyType” unified with ValuePropertyType Automated scale conversion algorithm (including ISO and US units/scales) Can present / demonstrate in a next meeting

26. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Applying ontology modeling for the definition of standards (Fact-Based Modeling methodology) 07/10/2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 Each subservice type is defined within exactly one service type. Each service type defines some subservice type. It is possible that some service type defines more than one subservice type. Each subservice type has exactly one subservice type name. Each subservice type name is of exactly one subservice type. In each population of subservice type realisation is required by tailoring, each subservice type occurs at most once. *Subservice type realisation is implicitly required if and only if it is not true that (that subservice type realisation is required by tailoring). In each population of subservice type realisation is implicitly required, each subservice type occurs at most once. In each population of subservice type allows multiple realisations within a single service, each subservice type occurs at most once. *Service type defines mandatory subservice type if and only if that service type defines that subservice type where that subservice type realisation is implicitly required. Each service type defines some mandatory subservice type. Slide provided by Serge Valera (ESA) Very powerful automated “verbalization” into structured natural language that can be validated by subject matter experts

27. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Transverse Services Important for SysML2.0 is to be clear on the scope … in terms of supported functions 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 Control integration of the engineering application Engineering Tools System Engineering Avionics Mechanical Engineering AIT Transverse Functions Data Integration (Interdisciplinary exchange, sharing and versioning of data ) Process Integration (Dependency management, work-flow, NC data, process management) Tool independent browsing, viewing, searching and review & annotation of models and data PDM / PLM Engineering Workbench Systems Engineering Workbench Control Engineering Workbench Control Engineering Workbench Operational Engineering Workbench Electrical Engineering Workbench Mechanical Engineering Workbench AIT Engineering Workbench FSW Engineering Workbench FSW Engineering Workbench 27 SysML2.0 shall be precise in terms of scope of covered functions and assumed functional context

28. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. … and in terms of supported processes 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 28 The full scope of systems engineering shall comprise System architecting activities Life-cycle coverage from requirements through verification Interface engineering Interdisciplinary orchestration – integration and control budget engineering, tracking and control...including assumptions and margins Supply chain integration including ICDs and design consolidation … For those tasks in the MBSE context the data shall be available SysML2.0 shall be precise in terms of supported systems engineering process.

29. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Product tree to capture the basic decomposition of a system into its “types” 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 29 GravitySat AOCS STR CGPS ACT OCT HPLV DHS OBC Abstract definition of system elements One item for every system element type Provision of structure for ICDs, documents, etc. Definition of design characteristics “as specified”

30. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Specification Tree, to capture, the next lower level identification of blocks, functions, modes, parameters, …. 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 GravitySat aocs : AOCS dhs : DHS AOCS cgps-a : CGPS str-1 : STR cgps-b : CGPS str-2 : STR CGPS act-1 : ACT oct-1 : OCT act-2 : ACT oct-2 : OCT hplv : HPLV DHS obc : OBC type 30

31. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Configuration Tree as (explicit) design representation of blocks, modes, I/F, parameters, monitoring and control data – fully linked!! 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 31 obc : OBC GravitySat dhs : DHS aocs : AOCS str-1 : STR str-2 : STR cgps-a : CGPS act-1 : ACT oct-1 : OCT act-2 : ACT oct-2 : OCT hplv : HPLV cgps-b : CGPS act-1 : ACT oct-1 : OCT act-2 : ACT oct-2 : OCT hplv : HPLV Explicit specification and distinction of every single system element Modeling of configuration-dependent aspects, e.g. electrical interfaces between components

32. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Assembly Model Configuration Model Assembly model to support integration, verification and operation 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 32 obc : OBC GravitySat FM1 dhs : DHS aocs : AOCS str-1 : STR str-2 : STR cgps-a : CGPS cgps-b : CGPS obc : OBC GravitySat FM2 dhs : DHS aocs : AOCS str-1 : STR str-2 : STR cgps-a : CGPS cgps-b : CGPS obc : OBC GravitySat FM3 dhs : DHS aocs : AOCS str-1 : STR str-2 : STR cgps-a : CGPS cgps-b : CGPS obc : OBC GravitySat dhs : DHS aocs : AOCS str-1 : STR str-2 : STR cgps-a : CGPS cgps-b : CGPS is configured by

33. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. Assembly Model The Assembly Models integrate Elements As Built 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 33 OBC KX225_3_485 GravitySat FM1 GravitySat FM1 dhs : DHS dhs : DHS aocs : AOCS aocs : AOCS STR_22 str-2 : STR str-2 : STR cgps-a : CGPS cgps-a : CGPS cgps-b : CGPS cgps-b : CGPS Realized items (shelf) OBC KX225_3_485 STR_22 STR_56 STR_25 STR_35 OBC KX225_3_483 integrates

34. Confidential © 2014 Airbus Defence and Space – All rights reserved. The reproduction, distribution and utilization of this document as well as the communication of its contents to others without express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or design. As-built Model Assembly Model Specification Model Configuration Model Princinple of Aspects for detailing the system 7 December 2015 OMG Technical Meeting La Jolla 2015, 7 - 11 December 2015 34 GravitySat FM1 aocs str-1 GravitySat aocs : AOCS str-1 : STR AOCS str-1 : STR STR-22 mass = 0.70 kg mass = 0.70 kg mass = 0.70 kg mass = 0.694 kg mass = 0.694 kg Propagated Aspect Defined Aspect Product Tree STR