Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

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Appendix L: Tether Boost Facility Design Final ReportTABLE OF CONTENTS1 SCOPE ......................................................................................................................521.1 Purpose.................................................................................................................................521.2 Scope of Text .......................................................................................................................522 SYSTEM-LEVEL DESIGN DRIVERS ...................................................................532.1 Launch Mass and On-Orbit Assembly................................................................................532.1.1 First Facility Requirements ......................................................................................................532.1.2 Facility Add-On Requirements ................................................................................................532.2 Zero or Low Consumables ..................................................................................................542.3 High Power For Thrust ........................................................................................................543 CONTROL STATION DESIGN..............................................................................553.1 ADCS/GN&C ......................................................................................................................553.1.1 Design Requirements, Drivers, and Assumptions...................................................................553.1.2 New Issues and Requirements Identified ................................................................................563.1.3 Trades and Recommendations .................................................................................................573.1.4 Recommended Follow-on studies............................................................................................583.2 Command and Data Handling (C&DH)..............................................................................583.2.1 Design Requirements, Drivers, and Assumptions...................................................................583.2.2 New Issues and Requirements Identified ................................................................................583.2.3 System Level Design................................................................................................................583.2.4 Recommended Follow-on studies............................................................................................593.3 Tether Deployment/Control.................................................................................................593.3.1 Design Requirements, Drivers, and Assumptions...................................................................593.3.2 New Issues and Requirements Identified ................................................................................593.3.3 Trades and Recommendations .................................................................................................593.3.4 Recommended Follow-on studies............................................................................................603.4 Electrical Power System (EPS) ...........................................................................................603.4.1 Design Requirements, Drivers, and Assumptions...................................................................603.4.2 New Issues and Requirements Identified ................................................................................603.4.3 Trades and Recommendations .................................................................................................613.4.4 Recommended Follow-on studies............................................................................................623.5 Thermal Control...................................................................................................................623.5.1 Design Requirements, Drivers, and Assumptions...................................................................623.5.2 New Issues and Requirements Identified ................................................................................663.5.3 Trades and Recommendations .................................................................................................663.5.4 Recommended Follow-on studies............................................................................................663.6 Structure/Configuration/Mass Properties............................................................................663.6.1 Design Requirements, Drivers, and Assumptions...................................................................663.6.2 Mass Properties Statement .......................................................................................................673.6.3 New Issues and Requirements Identified ................................................................................673.6.4 Trades and Recommendations .................................................................................................703.6.5 Recommended Follow-on studies............................................................................................723.7 Facility Evolvability ............................................................................................................72L-49
Appendix L: Tether Boost Facility Design Final Report3.7.1 Design Requirements, Drivers, and Assumptions...................................................................723.7.2 Recommended Follow-on studies............................................................................................744 CONTROL STATION PHASE II DESIGN SUMMARY.......................................75First Facility Launched ..............................................................................................................754.2 Features ................................................................................................................................75LIST OF FIGURESFigure 3-1. Reaction Wheel Power vs. Output Torque......................................................................56Figure 3-2. Control Moment Gyro for the International Space Station.............................................56Figure 3-3. Control Station Computer System Architecture..............................................................59Figure 3-4. Solar Array & Battery Weight vs. Percent Thrusting in Shade......................................61Figure 3-5. Energy Storage Options ...................................................................................................62Figure 3-6. Thermal Control System Schematic................................................................................63Figure 3-7. Control Station Heat Removal Loop ...............................................................................64Figure 3-8. Dual Heat Exchanger Concept.........................................................................................64Figure 3-9. Constant Conductance Heat Pipes on radiator. ...............................................................65Figure 3-10. Constant Conductance Heat Pipe design.......................................................................65Figure 3-11. Control Station Configuration 1 ....................................................................................71Figure 3-12. Control Station Configuration 2 ....................................................................................71Figure 3-13. Control Station Configuration 3 ....................................................................................71Figure 3-14. Evolved Control Station with additional mass modules and solar arrays....................73L-50
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Tethers Unlimited, Inc.MMOSTT Final
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NIAC Funded Tether Research• Moon
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Electrodynamic Reboost• Power sup
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Cislunar Tether Transport System•
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MXER Tethers Included in NASA’sII
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5mt Payload Tether Boost Facilityfo
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LEOGTO Boost Facility• Initial Fa
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Tether Boost FacilityControl Statio
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LEOGTO Boost Facility• TetherSim
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Rendezvous• Rapid AR&C Capability
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Proposed RETRIEVE TetherExperiment
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µTORQUE on Delta IV• Delta-IV Se
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Opportunities for NASATechnology De
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AIAA 2000-3842COMMERCIAL DEVELOPMEN
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--Commercial Tether Transport AIAA
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-Commercial Tether Transport AIAA 2
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Commercial Tether Transport AIAA 20
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Commercial Tether Transport AIAA 20
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Momentum Exchange/Electrodynamic Re
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DESIGN AND SIMULATION OF A TETHER B
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Tether Boost Facility Design AIAA 2
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Tethers Unlimited, Inc.Cislunar Tet
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Interim Report Outline- Configurati
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Mission Definition¥ Payload Capaci
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Baseline Control Station DetailsTET
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Baseline Grapple AssemblyCAPTURES A
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LEO Facility System ArchitectureGRA
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Payload Adapter Assembly Subsystems
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Potential Reeling FunctionsReeling
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LEO Control Station Weights16
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Payload Adapter Assembly Weights18
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Tether Boost FacilityRequired Power
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Electrical Propulsion Voltage´ Spe
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Potential Reeling FunctionsReeling
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Preliminary Reeling AnalysisθθAss
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Tether Boost FacilitySystem Require
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Table of Contents1 Scope ..........
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2 ReferencesThis section lists docu
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The system shall measure and contro
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Page 194 and 195: Tethers Unlimited, Inc.Tether Rende
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Page 210 and 211: Rapid Earth-Mars Transport• Reusa
Page 212 and 213: EarthMars Launch Windows• MMOSTT
Page 214 and 215: Incremental Development Path1. TORQ
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LEOGTO Boost Facility• TetherSim
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Tether Boost FacilityControl Statio
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Modular Design• Design Components
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Payload Accommodation AssemblyConfi
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Electrodynamic Thrusting• Drive c
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Tether Facility Reboost• Use Elec
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Rendezvous• Rapid Automated Rende
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Rendezvous Method: Preparation• P
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Development Issues• Automated Ren
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Potential Flight Experiments• Hig
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Opportunities for NASATechnology De
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Acknowledgements• Boeing/RSS - Jo
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IAF-99-A.5.10RAPID INTERPLANETARY T
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Rapid Interplanetary Tether Transpo
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IAF-00-S.6.04TETHER SYSTEMS FOR SAT
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IAF-00-S.6.04controlled very precis
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IAF-00-S.6.04Perigee Altitude (km)3
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IAF-00-S.6.04The LEO⇒GTO Tether B
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IAF-00-S.6.04AcknowledgmentsThis re
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Tethers Unlimited, Inc.Appendix K:
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Tethers Unlimited, Inc.at a rate of
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Tethers Unlimited, Inc.Appendix L -
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Tethers Unlimited, Inc.Appendixm M:
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Appendix N. MXER Tether for Deployi
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Electrodynamic Thrustingto Reboost
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100000 95000 90000 85000 80000 7500
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Momentum Exchange/Electrodynamic Re
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NOMENCLATURESymbol MeaningA payload
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DepartureangleA = 1.5π - (ω + u
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Tether material has a "characterist
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Rendezvous of Grapple with PayloadT
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adius vector to the new center of m
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days from payload pickup at one pla
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"JupiterandBeyond"Tether cut CUT:<
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Tethers Unlimited, Inc.Appendix Q:
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Tethers Unlimited, Inc.Appendix R:
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