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Challenge Team Status: MBSE and CubeSat. Space Systems Working Group MBSE Challenge Team, 2011-12. NASA-JPL: Chirs Delp, Bjorn Cole, Louise Anderson, Elyse Fosse RAX/Univeristy of Michigan: Sara Spengelo

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challenge team status mbse and cubesat

Challenge Team Status:MBSE and CubeSat

Space Systems Working Group

MBSE Challenge Team, 2011-12

NASA-JPL: Chirs Delp, Bjorn Cole, Louise Anderson, Elyse Fosse

RAX/Univeristy of Michigan: Sara Spengelo

AGI: Dave Kaslow

sswg challenge team status
SSWG Challenge Team Status 
  • Cube Sat Modeling
    • CubeSat Framework
    • RAX Models
  • CubeSat RAX Science Scenario
    • Issues with SysML Simple Time Model
    • Issues with SysML Instances
  • STK Integration Demo Update
    • Model Transformation-Based SysML-STK Integration
  • Model Based Reporting Demo
    • Model Based Document Generation
objective demonstrate real world application of mbse
Objective: Demonstrate Real-world Application of MBSE
  • 2007-11 FireSat Modeling Demonstrates MBSE Feasible for Space Systems
    • Basic SysML Modeling
    • Examples of Simulation Integration with STK
  • 2012 – A Real Flight Project
    • RAX 2 (http://rax.engin.umich.edu/)
    • Develop MBSE Framework for CubeSats in SysML
    • Utilize MBSE Method and Techniques from FireSat
    • CubeSat Domain Specific Concepts
    • Integration Strategies for Analysis Apps
      • Satellite Tool Kit
nasa jet propulsion laboratory mbse
NASA Jet Propulsion Laboratory MBSE
  • Europa Habitability Mission
    • Europa Concept Modeling
    • Several Large Mission and Flight System Models
    • Models used as basis for some key analyses
    • Generated Documents from Models as deliverable products
  • MGSS Ops Revitalization
    • Process Models
    • System Interfaces
    • Ops Spacecraft Models
challenges with modeling time
Challenges with Modeling Time
  • Time Domain Modeling, Time Scales and Time Systems
    • No General Model for the “Lifetime” of the System
  • Application and Specificity of Temporal Constraints
  • Using Instances to Describe Operational System in terms of Structure, Behavior and Time
    • Understanding of Structure and Behavior in a Unified Temporal Context
    • Time-Sequences of Instance Values
    • Sequence Diagram of Value Property Instances
    • No good instance model for behaviors
slide8

Challenges with Modeling Time

  • *Indicates Event Instance
  • Events Not Available unless Message Call Created
  • TimeScale
  • Lacts Strict Scale
  • Ex: Overlapping Times

How to represent Duration on Entire Timeline

  • Activity being Triggered By Message
  • Inside Activity Not Accessible
  • Only shows call of Action, not what actions are actually occurring

275-2012-05:23:25-275-2012-06:35:00

slide9

Rax Mission Time and Instance Example

  • Science Environment
    • Connections to Radio/Science Valid During Certain Time Period of the Mission
sswg challenge team next steps
SSWG Challenge Team: Next Steps
  • Elaborate CubeSat Framework and RAX Instance
  • Use CubeSat Framework and Missions
    • Drive out issues with SysML Simple Time Model
    • Drive out issues with SysML Instance Modeling
  • Demonstrate Reference Architecture for MBSE Platform
    • Model Based Analysis
    • Model Based Reporting (Document Generation)
  • Explore CubeSat Mission as Demonstrator
  • Propose a CubeSat Mission using the framework