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EyasSAT: Innovative Undergraduate Spacecraft Engineering and Testing Procedures

EyasSAT is a unique educational framework designed to enhance undergraduate spacecraft design education through hands-on assembly, integration, and testing of small satellite systems. This initiative, part of a revamped curriculum at the USAFA, allows students to experience real aerospace engineering challenges while utilizing flexible and efficient laboratory practices. By focusing on responsive space concepts, EyasSAT prepares future engineers for the demands of the aerospace industry and promotes innovative designs through experimentation. Future projects will explore advanced technologies such as GPS, imaging systems, and propulsion modules.

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EyasSAT: Innovative Undergraduate Spacecraft Engineering and Testing Procedures

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  1. SMALL SATELLITE ENGINEERING IN A BOX________________________ THE EYASSAT CONCEPT OF EDUCATING ASSEMBLY, INTEGRATION AND TEST PROCEDURES FOR UNDERGRADUATE SPACECRAFT DESIGN CLASSES

  2. DEPARTMENT OF ASTRONAUTICS 20 APRIL 2004 OBADIAH NG RITCHEY

  3. OVERVIEW • WHAT WE DO • EYASSAT CONCEPT • DIFFERENTIATING EYASSAT: PROMOTING ‘RESPONSIVE SPACE’ • WHAT I HAVE ACCOMPLISHED • IDEAS FOR THE FUTURE • ACKNOWLEDGEMENTS AND REFERENCES

  4. WHAT WE DO (USAFA & SSRC) • CAPSTONE DESIGN COURSES:  FalconSAT  FalconLAUNCH • REAL DOD SCIENCE AND PAYLOADS • ONLY UNDERGRADUATE ASTRONAUTICS PROGRAM

  5. EYASSAT CONCEPT INTRO • EYASSAT CREATED IN PART OF A REVAMPED A331 CURRICULUM • STUDENT EMPHASIS ON QUALIFICATION AND TESTING • SHADOWS THE ‘REAL AIR FORCE’ • ALLOWS FOR DEMONSTRATION AND EXPERIMENTATION OF A ‘REAL’ SPACE SYSTEM AT A FRACTIONAL COST

  6. EYASSAT CONCEPT INTRO • CONCEPT NOT USED BEFORE FOR AEROSPACE UNDERGRADUATE OR POSTGRADUATE STUDIES • CONCEPT ALLOWS FOR EXTREMELY FLEXIBLE LABORATORY EXPERIENCES

  7. THE EYASSAT STACK

  8. EYASSAT CLASSROOM PROCESS

  9. DIFFERENTIATING EYASSAT • EYASSAT IS MEANT FOR EDUCATION—NOT SPACE • EYASSAT HAS GREATER CAPABILITY (ADACS, SIZE, DECENTRALIZED COMPONENT OPERATION, INTEROPERABILITY, ‘PLUG-AND-PLAY’ HOT-SWAPPABLE MODULES) • DATA BUS MUCH MORE FLEXIBLE AND REDUNDANT (STAR VS SHARED ‘CAN-BUS’)

  10. DIFFERENTIATING EYASSAT • INTEGRATION ASPECTS NOT YET REALIZED (NATURE OF PROJECT) • SUBASSEMBLIES EASILY REPLACED • ELECTRICAL AND STRUCTURAL DESIGN ARE MORE INDEPENDENT • POWER AND UMBILICAL • MECHANICAL SIZE/COMPLEXITY • PAYLOADS (TYPE AND VOLUME AVAILABLE)

  11. DIFFERENTIATING EYASSAT • SHOCK, VIBE, THERMAL TESTING NOT YET IN THE PICTURE  • COMPONENT, SYSTEM-LEVEL AND FUNCTIONAL TESTS ARE! • CONFORMAL COAT/STAKING NOT UTILIZED (REUSABILITY ASPECT) • COMMERCIAL INTERESTS • CUBESAT ATTEMPTS TO DO ‘FALCONSAT’ WITH ‘EYASSAT’ PARTS AND BUDGET

  12. DIFFERENTIATING EYASSAT • EYASSAT DEMONSTRATES HOW THE SYSEMS INTERACT WHILE BEING ABLE TO CARRY OUT A ‘MISSION’ • THE OPERATION IS HANDS-ON, THE BUILDING IS NOT • EYASSAT HAS THE POSITIVE QUALITIES OF BOTH NANO- AND PICOSATS WHILE BEING RELIABLE AND EASILY RECONFIGURABLE

  13. WHAT I HAVE ACCOMPLISHED • 0th AND 1st ORDER NOMINAL I-V AND I-P CURVE SOLAR ARRAY CHARACTERIZATION • COMMUNICATION AND BATTERY MODULE PRODUCTION—LATER USED BY THE STUDENTS • A331 LABORATORY EXPERIENCE—AT MY OWN PACE AND DEPARTING FROM STUDENT LESSONS • RESEARCH THE OTHER ‘DOES SPACE’ UNIVERSITY PROGRAMS FOR COMPARISON

  14. WHAT I HAVE ACCOMPLISHED • COMPLETE ADDITIONAL BASELINE DATA TO AID IN ACCEPTANCE TESTS • PRODUCE NOMINAL CHARACTERIZATION DATA FOR ADCS USE—FOCUSING ON ENVIRONMENTAL VARIABLES

  15. SOLAR ARRAY PERFORMANCE

  16. EyasSAT Solar Array IV Curve 0.35 1.6 1.4 0.3 1.2 0.25 1 0.2 I vs V Current (mA) 0.8 P vs V 0.15 0.6 0.1 0.4 0.05 0.2 0 0 0 2 4 6 8 10 12 14 Voltage (V) SOLAR ARRAY PERFORMANCE

  17. ADCS POSITION SENSOR TESTING ARRANGEMENT

  18. ADCS POSITION SENSOR READINGS

  19. ADCS POSITION SENSOR READINGS

  20. IDEAS FOR THE FUTURE • GPS • DIGITAL IR AND VISIBLE SPECTRUM IMAGING • TARGET TRACKING • PROX-OPS ON AIRTABLE  (THINK: SPACE ‘BATTLEBOTS’) • COMPOSITE STRUCTURES • COLD-GAS PROPULSION MODULE

  21. ACKNOWLEDGEMENTS AND REFERENCES • DFAS, ESPECIALLY CAPT BARNHART • MR JIM WHITE, CSS • SCHAFFNER, CALPOLY PAPER AUTHOR • WERTZ AND LARSON, SMAD, ETC. • TWIGGS, STANFORD’S SSDL • GUPTA, ANUSAT LEAD, ISRO

  22. FOR MORE INFORMATION… WWW.EYASSAT.COM

  23. QUESTIONS?

  24. DEMONSTRATION

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