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D Acronyms ECLSS environmental control and life support system EDL entry, descent, and landing FDIR fault detection, isolation, and recovery GCR galactic cosmic radiation GN&C guidance, navigation, and control ISRU in situ resource utilization ISS International Space Station ITAR International Traffic in Arms Regulations LEO low Earth orbit LOX liquid oxygen NASA National Aeronautics and Space Administration NRC National Research Council OCT Office of the Chief Technologist RBCC Rocket-Based Combined Cycle SEE single event effects SPE solar particle event TA technology area TA01 Launch Propulsion Systems Technology Area TA02 In-Space Propulsion Technologies Technology Area TA03 Space Power and Energy Storage Technology Area TA04 Robotics, TeleRobotics, and Autonomous Systems Technology Area TA05 Communication and Navigation Technology Area TA06 Human Health, Life Support, and Habitation Systems Technology Area TA07 Human Exploration Destination Systems Technology Area TA08 Science Instruments, Observatories, and Sensor Systems Technology Area TA09 Entry, Descent, and Landing Systems Technology Area TA10 Nanotechnology Technology Area TA11 Modeling, Simulation, Information Technology, and Processing Technology Area TA12 Materials, Structures, Mechanical Systems, and Manufacturing Technology Area TA13 Ground and Launch Systems Processing Technology Area TA14 Thermal Management Systems Technology Area 48

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TABS Technology Area Breakdown Structure TBCC Turbine-Based Combined Cycle TRL technology readiness level 49

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