Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

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Appendix L: Tether Boost Facility Design Final ReportACRONYMS AND ABBREVIATIONSADCSC&DHCCHPCMGCommCSEDEPSFEACGEOGN&CGN 2GPSLEOMMOSTTNIACPAATUIVCHPAttitude Determination and Control SubsystemCommand and Data HandlingConstant Conductance Heat PipeControl Moment GyroCommunicationsControl StationElectrodynamicElectrical Power SystemField Emitter Array CathodeGeosynchronous Earth OrbitGuidance, Navigation, and ControlGaseous NitrogenGlobal Positioning SatelliteLow Earth OrbitMoon-Mars Orbiting Spinning Tether TransportNASA Institute for Advanced ConceptsPayload Adapter AssemblyTethers Unlimited, Inc.Variable Conductance Heat-PipeL-51
Appendix L: Tether Boost Facility Design Final Report1 SCOPE1.1 PurposeThe Moon-Mars Orbiting Spinning Tether Transport (MMOSTT) project is adesign study funded by the NASA Institute for Advanced Concepts (NIAC) and led byPrincipal Investigator Dr. Rob Hoyt of Tethers Unlimited, Inc. The purpose of thestudy is to define a space transportation system that uses a spinning tether facility inorbit about the Earth to boost payloads from Low Earth Orbit (LEO) to higher orbits orto Earth escape. The tether facility consists of the tether, a control station, and agrapple assembly. The control station controls the tether and tether dynamics. Thegrapple assembly captures and releases payloads. Other major components of theMMOSTT objective system are the ground station and the payload accommodationassembly. The latter provides the interface between the payload and the grappleassembly.1.2 Scope of TextThis document describes results of engineering design and analysis conductedby the Boeing Company, a subcontractor to Tethers Unlimited, Inc. (TUI), throughPhase 2 of the MMOSTT contract. The scope of this work covers design andanalysis of the Tether Control Station (CS). Section 2 of this document describes keyassumptions and design drivers for the overall CS. Section 3 describes each majorsubsystem of the CS. For each major subsystem, the text describes keyrequirements and assumptions, new issues and requirements identified during Phase2 of the project, trade studies and design recommendations, and recommendedfollow-on studies. Section 4 is a summary of the current design.L-52
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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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Page 210 and 211: Rapid Earth-Mars Transport• Reusa
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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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Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

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