1. .1 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Titan MESSENGER Autonomy Experiment

2. .2 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Rationale ST7 Experience Has Shown That Dedicated Autonomy Experiments are not Cost Effective. The Technology Must Be Introduced into an Existing Mission Framework. but Various Studies Have Concluded that Autonomy Capabilities and Requirements Must Be Considered At System Design Time To Achieve Significant Cost/Capability Impact. The MESSENGER Mission Provides a Unique Opportunity to Achieve Cost-Effective Operational Autonomy by 2010.  Deep Space Environment  Capable On-board Processing Baseline.  On-board Fuel Resources for Extended Orbital Ops (Currently Unplanned)  Development Can Parallel multi-year Cruise Phase  PI Support for “Autonomous Science Platform” Concept

3. .3 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Reference Mission MErcury Surface, Space ENvironment, GEochemistry and Ranging (MESSENGER) Mission. April 2004 Launch June 2006 Orbit Insertion Four RAD6000 Processors Onboard (25 MHz Clock, 24MB SRAM) Dedicated Fault Protection Processor Architecture Legacy Onboard Autonomy Engine

4. .4 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary MESSENGER Mission Timelines 20042005200620072008200920102011 Launch Venus Flyby 1 Venus Flyby 2 Mercury Flyby 1 Mercury Flyby 2 Mercury Orbit Insertion End Scheduled Mercury Ops End Extended Mercury Ops Potential Autonomous Mercury Ops Phase 2001200220032004 Development Operations PDRCDRStart I&T Pre Ship Review Launch DFS/ECS MiniME

5. .5 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Objectives Conclusively Demonstrate Direct NASA Relevance of Model-based Programming and Execution Frameworks in Science-driven Mission Scenario.  Verifiable Autonomous Behavior  Reactive Time Scales Establish Essential Connection Between Autonomy Technology Developers and Mission Systems and Software Engineering. Bridge Current Practices into New Technology Frameworks.  Rule-based Systems into Model-based Systems

6. .6 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Model-based Executive Architecture Comparison Deductive Controller Telemetry Commands Plant Model Control Sequencer Configuration Goals State Estimates Execution Model Activity Selection Autonomy “Rule Engine” Telemetry Commands Safe-hold & Earth Acq Rule List Command Processing Commands Command Sequence Clock Mission Planning (ground) Mission Planning Safe-hold & Earth Acq Baseline Model-based Clock

7. .7 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary “Autonomy Rules” in Current Application Example from MESSENGER Safing and Fault Protection Requirements Specification. (Flight Software Design to Support 1280 Rules)

8. .8 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary General Plan Initial Science Concept Study and Technology Development Development of Ground Operations Decision Support Tool  Realistic Scale Model Development  Shadow Mode Performance Assessment  Operator Interface Flight Architecture Build Update & Bench Test Operator Training Spacecraft Reconfiguration and Checkout Autonomous Planetary Operations in Extended Mission Phase

9. .9 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Master Schedule

10. .10 RESEARCH & TECHNOLOGY DEVELOPMENT CENTER SYSTEM AND INFORMATION SCIENCES JHU/MIT Proprietary Mission Operations Automation Framework Activity Merging Sequence Validation & Expectation Generation S/C State Model Command Uplink Telemetry Downlink Performance Assessment State Update State Recovery S/C Science Goals S/C Maintenance Requirements State Recovery Goals Real-time Mission Ops Anomaly Sequence Generation Maintenance Activity Generation Science Activity Generation Epoch 2000 Contact Automation Planning & Scheduling Contingency Operations Near Term Focus