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Oh, Thank Heaven for 7-Eleven: Fueling Up in Space with In-Situ Resource Utilization

Oh, Thank Heaven for 7-Eleven: Fueling Up in Space with In-Situ Resource Utilization . ASTE-527 Final Presentation Riley Garrett. Mission Context – Lunar Excavator. Colorado School of Mines 1. Carnegie Mellon. Mission Context – Water Ice Deposits on the Moon.

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Oh, Thank Heaven for 7-Eleven: Fueling Up in Space with In-Situ Resource Utilization

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  1. Oh, Thank Heaven for 7-Eleven: Fueling Up in Space with In-Situ Resource Utilization ASTE-527 Final Presentation Riley Garrett

  2. Mission Context – Lunar Excavator Colorado School of Mines1 Carnegie Mellon

  3. Mission Context – Water Ice Deposits on the Moon

  4. Mission Context – Lunar Propellant Purdue University3 • Aluminum makes up 13% of the mass of lunar highland regolith • ALICE powered rocket -Thrust levels above 650 lb with Isp of 210 s during test flight

  5. Rationale for In-Situ Lunar Propellant Production – Better Performance

  6. Saturn V with Propellant Depot Using propellant depot means Saturn V does not need to launch 32 tons of propellant…delta-V for TLI (10.8 km/s) can be nearly be achieved with just the first 2 stages

  7. 50 metric tons dry = 125 metric tons wet with using depots6 • A launch vehicle can be much smaller at 1/10th the cost

  8. Assumptions and ground rules …to a more Permanent Human Presence7 Robotic Precursors Lead the Way…

  9. 7-Eleven Space Mission Concept – Land a Rover on the Moon and Re-launch using only In-Situ Resources Robotic Precursor Mission to Demonstrate a Factory for Processing Lunar Material for Rocket Propellant8 • Search – Land - Drive – Drill - Dig - Analyze - Extract - Mix - Load - Launch

  10. 7-Eleven Space Mission Architecture - Launch Vehicle

  11. 7- Eleven Space Mission Architecture – Trajectory and Landing Site

  12. 7-Eleven Space Mission Architecture – Mission Operations and Systems • 1. Soil Sampling, 2. Landing, 3. Mining and Excavation, • 4. Production and Refinement, 5. Loading and Launching

  13. 7-Eleven Space Mission Architecture - Spacecraft 7 • Lander • Rover9 • Dig and Drill • Excavate Eleven

  14. 7-Eleven Space Mission Architecture – Spacecraft Instruments • Extraction10 – Mixer – Loader - Launch cryolite Melt - quench - leech + electrolysis anorthosite alumina ALICE Pulse Plasma Nano-aluminum aluminum

  15. Merits and Limitations Mission Merits Mission Limitations Is the mission scalable to meet larger propellant demands? Can the mission be extended for other resource extractions such as water and oxygen? Does a solid propellant meet the propulsion requirements for enough spacecraft to make it worthwhile? • Demonstrates technology sooner rather than later. • Engages mission architects and planners in alternate propellant sources. • Engages the public in another rover based mission (which they like). • Meet program needs in terms of cost and scale. • Demonstrates appropriate technology, at an appropriate scale. • Shows Congress and NASA heads what to expect from ISRU and propellant depots. • Proves the technology.

  16. Future Studies • Developing re-startable ALICE solid propellant loading techniques for spacecraft station-keeping in GEO • Improve specific impulse of ALICE solid propellant • Oxygen and hydrogen production methods for liquid propulsion systems • Silane production for rocket engines on Mars since it can burn using carbon dioxide as an oxidizer • Extending propellant production methods for ISRU on NEO or Mars Proposed Mars sample and return mission using in-situ produced propellant11

  17. References • http://www.nasa.gov/centers/marshall/multimedia/photos/2004/photos04-072.html • http://www.wired.com/wiredscience/2010/03/water-moon-north-pole/ • http://www.eurekalert.org/pub_releases/2009-08/afoo-nat082109.php • http://www.lpi.usra.edu/meetings/leag2007/presentations/20071003.bienhoff.pdf • http://www.wwheaton.com/waw/mad/mad3.html • http://www.nss.org/articles/depots.html • http://www.impactlab.net/2011/10/22/lunar-scientists-plan-for-sustainable-and-affordable-moon-base/ • http://www.nasa.gov/exploration/multimedia/isru-hawaii.html • http://astrobotic.net/services/payload-delivery/ • http://www.asi.org/adb/02/02/03/aluminum-extraction.html • beyondapollo.blogspot.com

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