Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

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Electrodynamic Thrusting• Drive current along tether• Plasma contactors exchangecurrent w/ ionosphereThrustMagnetic FieldCurrent• Plasma waves close current“loop”• Current “pushes” againstgeomagnetic field via JxBForce• Current: 10-12 A• Voltage: ~20 kVTUI/MMOSTT 20Plasma Contactors(Hollow Cathode,FEA, Bare Wire)
Tether Facility Deployment• Launch Tether Facility on Delta-IV-H (20,500 kg to LEO)– Retain 3490 kg Upper Stage for Ballast• 250 km, 20° Initial Orbit• Assemble Facility On-Orbit• Deploy Tether Upwards• Use Electrodynamic Thrust to:– Torque Orbit to Equatorial Plane– Boost Apogee– Spin Up Tether• ~8 Months to Operational OrbitInitial OrbitOperational OrbitTUI/MMOSTT 21
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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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4 Ground Rules & AssumptionsThis se
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Appendix F: Tether Boost Facility D
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Appendix F Tether Boost Facility De
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Appendix F Tether Boost Facility De
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Appendix L: Tether Boost Facility D
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Page 174 and 175: Appendix L: Tether Boost Facility D
Page 194 and 195: Tethers Unlimited, Inc.Tether Rende
Page 206 and 207: Ongoing Tether Work Under NIAC Fund
Page 208 and 209: Cislunar Tether Transport System•
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
Page 216 and 217: LEOGTO Boost Facility• TetherSim
Page 218 and 219: Tether Boost FacilityControl Statio
Page 220 and 221: Modular Design• Design Components
Page 222 and 223: Payload Accommodation AssemblyConfi
Page 226 and 227: Tether Facility Reboost• Use Elec
Page 228 and 229: Rendezvous• Rapid Automated Rende
Page 230 and 231: Rendezvous Method: Preparation• P
Page 232 and 233: Development Issues• Automated Ren
Page 234 and 235: Potential Flight Experiments• Hig
Page 236 and 237: Opportunities for NASATechnology De
Page 238 and 239: Acknowledgements• Boeing/RSS - Jo
Page 240 and 241: IAF-99-A.5.10RAPID INTERPLANETARY T
Page 242 and 243: Rapid Interplanetary Tether Transpo
Page 272 and 273: 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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Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

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