Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

More documents

Recommendations

Info

100000 95000 90000 85000 80000 75000 70000 65000 60000 55000 50000 45000 40000 35000 30000 25000 20000 15000 10000 5000 0µSat Tether Facility DesignMass Ratios:• Control Station 747 kg• Upper Stage (Ballast) 371 kg• Grapple 50 kg• Tether 743 kg• TOTAL: = 9 x payloadTether Length: 100 kmOrbit:• 405x8446 km ->390x6103 kmSystem Masses Tether CharacteristicsTether mass 743 kg Tether Length 100 kmCS Active Mass 747 kg Tether mass ratio 3.71CS Ballast Mass 371 kg Tether tip velocity at catch 1,268 m/sGrapple mass 5 0 kg Tether tip velocity at toss 1,148 m/sTotal Facility Mass 1,911 kg Tether angular rate 0.015803 rad/sGravity at Control Station0.70 gTotal Launch Mass 1,540 kg Gravity at payload 1.85 gRendezvous acceleration2.04 gPayload Mass2 0 0 kgPre-CatchJoinedSystem Post-TossPositions & Velocities Payload Tether Post-catch Tether Payloadperigee altitude km 325 405 398 390 470apogee altitude km 325 8446 7199 6103 35786perigee radius km 6703 6783 6776 6768 6848apogee radius km 6703 14824 13577 12481 42164perigee velocity m / s 7711 8979 8859 8739 10007apogee velocity m / s 7711 4109 4421 4739 1625CM dist. From Station m 19765 27365 19765CM dist. To Grapple m 80235 72635 80235∆V to Reboost m / s 240∆V to Correct Apogee m / s 0∆V to Correct Precess. m / s 0∆V To Circularize m / s 1449Basic Orbital Parameterssemi-major axis km 6703 10804 10176 9625 24506eccentricity 0.0 0.372 0.334 0.297 0.721inclination rad 0 0 0 0 0semi-latus rectum km 6703 9308 9040 8777 11783sp. mech. energy m2/s2 -2.97E+07 -1.84E+07 -1.96E+07 -2.07E+07 -8.13E+06vis-viva energy m2/s2 -5.95E+07 -3.69E+07 -3.92E+07 -4.14E+07 -1.63E+07period sec 5462 11176 10217 9397 38179period min 91.0 186.3 170.3 156.6 636.3station rotation period sec 397.6 397.6 397.6rotation ratio 28.1 25.7 23.61.00E+00Radius(mm)MX Tethers7-1.00E+00Distance From Control StationTether Facility Reboost• Tether facility transfersmomentum & energy topayload– tether orbit apogeedrops ~2300 km• Tether must restore 4 GJof orbital energy• To reboost within 30days, must add energyto orbit at 1.6 kW• Requires EOL PanelPower of 7.5 kWMX Tethers8
Tether Boost FacilityControl Station• Solar Arrays• Battery/Flywheel Power Storage• Command & Control• Tether DeployerTotal Mass: 1,911 kgPayload Mass: 200 kgTether (not shown to scale)• Hoytether for Survivability• Spectra 2000• 75-100 km Long• Conducting Portion forElectrodynamic ThrustingGrapple Assembly• Power, Guidance• Grapple Mechanism• Small Tether DeployerPayloadMX Tethers9“Net & Harpoon” Grapple Method• For a small tether facility, grapplemechanism must be small and lightweight– precludes highly capable grapple assembly• Favored grapple method is “harpoon & net”• Payload maneuvers to proximity with net• Payload “shoots” tethered grapple into net• Payload releases from net by retractingbarbs on grappleAdvantages:• Large capture envelope• Minimizes need for fast maneuvering bypayload• Minimizes dynamic loads on payloadIssues:• Load distribution on net• Assuring secure grapplingMX Tethers10
Page 2 and 3:
Tethers Unlimited, Inc.MMOSTT Final
Page 4 and 5:
Page 6 and 7:
Page 8 and 9:
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
NIAC Funded Tether Research• Moon
Page 26 and 27:
Electrodynamic Reboost• Power sup
Page 28 and 29:
Cislunar Tether Transport System•
Page 30 and 31:
MXER Tethers Included in NASA’sII
Page 32 and 33:
5mt Payload Tether Boost Facilityfo
Page 34 and 35:
LEOGTO Boost Facility• Initial Fa
Page 36 and 37:
Tether Boost FacilityControl Statio
Page 38 and 39:
LEOGTO Boost Facility• TetherSim
Page 40 and 41:
Rendezvous• Rapid AR&C Capability
Page 42 and 43:
Proposed RETRIEVE TetherExperiment
Page 44 and 45:
µTORQUE on Delta IV• Delta-IV Se
Page 46 and 47:
Opportunities for NASATechnology De
Page 48 and 49:
AIAA 2000-3842COMMERCIAL DEVELOPMEN
Page 50 and 51:
--Commercial Tether Transport AIAA
Page 52 and 53:
-Commercial Tether Transport AIAA 2
Page 54 and 55:
Commercial Tether Transport AIAA 20
Page 56 and 57:
Commercial Tether Transport AIAA 20
Page 58 and 59:
Momentum Exchange/Electrodynamic Re
Page 60 and 61:
DESIGN AND SIMULATION OF A TETHER B
Page 62 and 63:
Tether Boost Facility Design AIAA 2
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Tethers Unlimited, Inc.Cislunar Tet
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Interim Report Outline- Configurati
Page 84 and 85:
Mission Definition¥ Payload Capaci
Page 86 and 87:
Baseline Control Station DetailsTET
Page 88 and 89:
Baseline Grapple AssemblyCAPTURES A
Page 90 and 91:
LEO Facility System ArchitectureGRA
Page 92 and 93:
Payload Adapter Assembly Subsystems
Page 94 and 95:
Potential Reeling FunctionsReeling
Page 96 and 97:
LEO Control Station Weights16
Page 98 and 99:
Payload Adapter Assembly Weights18
Page 100 and 101:
Tether Boost FacilityRequired Power
Page 102 and 103:
Electrical Propulsion Voltage´ Spe
Page 104 and 105:
Potential Reeling FunctionsReeling
Page 106 and 107:
Preliminary Reeling AnalysisθθAss
Page 108 and 109:
Tether Boost FacilitySystem Require
Page 110 and 111:
Table of Contents1 Scope ..........
Page 112 and 113:
2 ReferencesThis section lists docu
Page 114 and 115:
The system shall measure and contro
Page 116 and 117:
4 Ground Rules & AssumptionsThis se
Page 118 and 119:
Appendix F: Tether Boost Facility D
Page 120 and 121:
Appendix F Tether Boost Facility De
Page 122 and 123:
Appendix F Tether Boost Facility De
Page 124 and 125:
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Appendix L: Tether Boost Facility D
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
Page 152 and 153:
Page 154 and 155:
Page 156 and 157:
Page 158 and 159:
Page 160 and 161:
Page 162 and 163:
Page 164 and 165:
Page 166 and 167:
Page 168 and 169:
Page 170 and 171:
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
Page 190 and 191:
Page 192 and 193:
Page 194 and 195:
Tethers Unlimited, Inc.Tether Rende
Page 196 and 197:
Page 198 and 199:
Page 200 and 201:
Page 202 and 203:
Page 204 and 205:
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 224 and 225:
Electrodynamic Thrusting• Drive c
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 244 and 245:
Page 246 and 247:
Page 248 and 249:
Page 250 and 251:
Page 252 and 253:
Page 254 and 255:
Page 256 and 257:
Page 258 and 259:
Page 260 and 261: Rapid Interplanetary Tether Transpo
Page 272 and 273: IAF-00-S.6.04TETHER SYSTEMS FOR SAT
Page 274 and 275: IAF-00-S.6.04controlled very precis
Page 276 and 277: IAF-00-S.6.04Perigee Altitude (km)3
Page 278 and 279: IAF-00-S.6.04The LEO⇒GTO Tether B
Page 280 and 281: IAF-00-S.6.04AcknowledgmentsThis re
Page 282 and 283: Tethers Unlimited, Inc.Appendix K:
Page 286 and 287: Tethers Unlimited, Inc.at a rate of
Page 290 and 291: Tethers Unlimited, Inc.Appendix L -
Page 296 and 297: Tethers Unlimited, Inc.Appendixm M:
Page 302 and 303: Appendix N. MXER Tether for Deployi
Page 308 and 309: Electrodynamic Thrustingto Reboost
Page 312 and 313: Momentum Exchange/Electrodynamic Re
Page 314 and 315: NOMENCLATURESymbol MeaningA payload
Page 316 and 317: DepartureangleA = 1.5π - (ω + u
Page 318 and 319: Tether material has a "characterist
Page 320 and 321: Rendezvous of Grapple with PayloadT
Page 322 and 323: adius vector to the new center of m
Page 324 and 325: days from payload pickup at one pla
Page 326 and 327: "JupiterandBeyond"Tether cut CUT:<
Page 328 and 329: Tethers Unlimited, Inc.Appendix Q:
Page 330 and 331: Tethers Unlimited, Inc.Appendix R:
Page 336: Tethers Unlimited, Inc.Appendix R:
show all

Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?