1 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 PILOT Hydrogen Reduction Field Demonstration and Commercialization Implications D. Larry Clark JUSTSAP/PISCES 2008 November 12, 2008

2 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 The PILOT has Landed

3 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Integrated Oxygen Production Demo Bucket Drum Excavator 17 kg/batch H2 Reduction Reactor Lift System and Auger Loading Lander Simulator Product Processor Oxygen Liquefier/Storage Water Condenser Salt Extraction Collector Hydrogen Storage

4 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Design Requirements System Production Requirements 1 kg per day oxygen production Demonstration Testing Requirements 2 batches in a daily production demonstration Performed in Earth ambient environment Modules field mobile and reconfigurable Derived Requirements 1% oxygen recovery by mass 17.6 kg regolith batch size – 176 grams O2 per batch

5 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Soil Handling Subsystem Soil Lift Auger transfer Internal Auger –Keeps soils off of sealing surface Dual vacuum seal Heat recovery system –Uses phase change material around internal auger Auger flights Outer shell Phase-change material

6 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Hydrogen Reduction Reactor Rotating Reactor Spiral flights to pull in, expel soil Electric Resistive heaters 17 kg batch size

7 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Gas Recovery And Circulation Subsystem Circulates reactant and steam product Pumps off out- gassing components –Could be collected on Moon Hydrogen reclamation –Stored as high pressure gas for next batch

8 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Gas Cleanup and Water Collection Subsystem Gas scrubber for sulphur and other reactive components Condenser Water collection vial Will collect over 1 kg this morning

9 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Water Electrolysis Subsystem Water buffer storage Low pressure bladder Two stage water cleanup module High pressure pump –Fills electrolyzer under high pressure Cathode feed electrolyzer –5 kW enough to provide over 1 mT oxygen per year –Reduces system complexity High pressure hydrogen storage

10 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Cryogenic Storage Subsystem Inlet gas dryer Vacuum jacketed vessel Capable of integrating cryocooler Liquid outflow line

11 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Robotic Bucket Drum Excavator Bucket Drum Concept Combines high cutting force and excavation efficiency with transfer characteristics of overshot loader 10 kg per drum load 18 kg load in dump bed

12 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 The Vision

13 Precursor In-situ Lunar Oxygen Testbed - PILOT PISCES 2008 Thank You