Pre-Phase A Report - Lisa - Nasa

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x Contents 7 Spacecraft Design 143 7.1Systemconfiguration .............................143 7.1.1 Spacecraft ...............................143 7.1.2Propulsionmodule ..........................144 7.1.3Composite...............................146 7.1.4Launchconfiguration.........................147 7.2 Spacecraft subsystem design .........................148 7.2.1Structure ...............................148 7.2.2Thermalcontrol............................148 7.2.3Coarseattitudecontrol........................148 7.2.4On-boarddatahandling .......................149 7.2.5Tracking,telemetryandcommand..................150 7.2.6Powersubsystemandsolararray ..................150 7.3Micronewtonionthrusters..........................151 7.3.1 History of FEEP development ....................152 7.3.2TheFieldEmissionElectricPropulsionSystem ..........152 7.3.3 Advantages and critical points of FEEP systems ..........154 7.3.4 Alternative solutions for FEEP systems...............155 7.3.5Currentstatus.............................155 7.4 Mass and power budgets ...........................158 8 Technology Demonstration in Space 161 8.1 ELITE –EuropeanLISA Technology Demonstration Satellite .......161 8.1.1Introduction..............................161 8.1.2 Mission goals .............................162 8.1.3Backgroundrequirements ......................162 8.2 ELITE Missionprofile.............................164 8.2.1Orbitanddisturbanceenvironment .................164 8.2.2Coarseattitudecontrol........................165 8.3 ELITE Technologies..............................165 8.3.1Capacitivesensor...........................165 8.3.2Laserinterferometer .........................165 8.3.3Ionthrusters .............................165 8.3.4Drag-freecontrol ...........................166 8.4 ELITE Satellite design ............................166 8.4.1Powersubsystem ...........................166 8.4.2CommandandDataHandling....................166 8.4.3Telemetryandmissionoperations..................167 3-3-1999 9:33 Corrected version 2.08
Contents xi 9 Science and Mission Operations 169 9.1Scienceoperations ..............................169 9.1.1 Relationship to spacecraft operations ................169 9.1.2Scientificcommissioning .......................170 9.1.3Scientificdataacquisition ......................170 9.2Missionoperations ..............................171 9.3Operatingmodes ...............................171 9.3.1 Ground-test mode ..........................171 9.3.2Launchmode .............................171 9.3.3Orbitacquisition ...........................172 9.3.4Attitudeacquisition..........................172 9.3.5Sciencemode .............................172 9.3.6Safemode...............................172 10 International Collaboration, Management, Schedules, Archiving 175 10.1Internationalcollaboration..........................175 10.2Scienceandprojectmanagement ......................176 10.3Schedule....................................177 10.4Archiving ...................................177 References 179 List of Acronyms 187 Corrected version 2.08 3-3-1999 9:33
Page 1 and 2: LISA Laser Interferometer Space Ant
Page 3 and 4: LISA Laser Interferometer Space Ant
Page 5 and 6: Foreword The first mission concept
Page 7 and 8: The result of the Team-X study was
Page 9 and 10: Contents Foreword iii Executive Sum
Page 11: Contents ix 4.2.3 Acceleration nois
Page 15 and 16: Executive Summary 1 Executive Summa
Page 17 and 18: Executive Summary 3 Complementarity
Page 19 and 20: Mission Summary 5 LISA Mission Summ
Page 21 and 22: Chapter 1 Scientific Objectives By
Page 23 and 24: 1.1 Theory of gravitational radiati
Page 33 and 34: 1.2 Low-frequency sources of gravit
Page 51 and 52: Chapter 2 Different Ways of Detecti
Page 53 and 54: 2.2 Ground-based detectors 39 2.2 G
Page 55 and 56: 2.2 Ground-based detectors 41 Count
Page 57 and 58: 2.4 Spacecraft tracking 43 2.4 Spac
Page 59 and 60: 2.7 Heliocentric versus geocentric
Page 61 and 62: 2.8 The LISA concept 47 telescopes
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2.8 The LISA concept 49 Figure 2.6
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2.8 The LISA concept 51 seem rather
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Chapter 3 Experiment Description 3.
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3.1 The interferometer 55 Fiber to
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3.1 The interferometer 57 3.1.4 Sys
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3.1 The interferometer 59 Figure 3.
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3.1 The interferometer 61 3.1.6 Las
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3.1 The interferometer 63 signal sh
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3.1 The interferometer 65 for a sin
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3.2 The inertial sensor 67 design (
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3.2 The inertial sensor 69 and the
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3.2 The inertial sensor 71 Figure 3
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3.2 The inertial sensor 73 sufficie
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3.3 Drag-free/attitude control syst
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3.3 Drag-free/attitude control syst
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Chapter 4 Measurement Sensitivity 4
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4.1 Sensitivity 81 averaged transfe
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4.2 Noises and error sources 83 The
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4.2 Noises and error sources 85 Tab
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4.2 Noises and error sources 87 cod
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4.2 Noises and error sources 89 cha
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4.2 Noises and error sources 91 fre
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4.2 Noises and error sources 93 ele
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4.2 Noises and error sources 95 is
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4.2 Noises and error sources 97 and
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4.2 Noises and error sources 99 Eq.
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4.3 Signal extraction 101 here that
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4.3 Signal extraction 103 phase loc
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4.4 Data analysis 105 • LISA obse
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4.4 Data analysis 107 for ground-ba
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4.4 Data analysis 109 that are defi
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4.4 Data analysis 111 with the phas
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4.4 Data analysis 113 density Sn(f)
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4.4 Data analysis 115 box (in stera
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4.4 Data analysis 117 LISA’s dist
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Chapter 5 Payload Design 5.1 Payloa
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5.2 Payload structural components 1
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5.2 Payload structural components 1
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5.4 Mass estimates 125 5.4 Mass est
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5.7 Thermal analysis 127 the Y-shap
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5.8 Telescope assembly 129 surface
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5.9 Payload processor and data inte
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5.9 Payload processor and data inte
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Chapter 6 Mission Analysis 6.1 Orbi
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6.3 Injection into final orbits 137
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6.4 Orbit configuration stability 1
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6.5 Orbit determination and trackin
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Chapter 7 Spacecraft Design 7.1 Sys
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7.1 System configuration 145 2220 m
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7.1 System configuration 147 7.1.4
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7.2 Spacecraft subsystem design 149
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7.3 Micronewton ion thrusters 151 b
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7.3 Micronewton ion thrusters 153 F
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7.3 Micronewton ion thrusters 155 (
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7.3 Micronewton ion thrusters 157 F
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7.4 Mass and power budgets 159 The
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Chapter 8 Technology Demonstration
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8.1 ELITE - European LISA Technolog
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8.3 ELITE Technologies 165 8.2.2 Co
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8.4 ELITE Satellite design 167 inco
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Chapter 9 Science and Mission Opera
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9.2 Mission operations 171 9.2 Miss
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9.3 Operating modes 173 Power savin
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Chapter 10 International Collaborat
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10.3 Schedule 177 The ESA Project M
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References [1] C.W. Misner, K.S. Th
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References 181 [35] C. Cutler, T.A.
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References 183 [77] J.E. Faller and
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References 185 [104] E. Grun, H.A.
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List of Acronyms - and other abbrev
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List of Acronyms 189 LHC Large Hadr
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Rear cover figure : This Report has
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Pre-Phase A Report - Lisa - Nasa

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