Passage to a Ringed World - NASA's History Office

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APPENDIX B H O 2 + Water molecule with one electron removed 144 PASSAGE TO A RINGED WORLD HASI Huygens Atmospheric Structure Instrument (Huygens science instrument) HC 3 N Cyanoacetylene HCN Hydrogen cyanide He ++ Helium atom with two electrons removed, i.e., an alpha particle HGA High-gain antenna I INMS Ion and Neutral Mass Spectrometer (Orbiter science instrument) IRI Inertial reference interface IRU Inertial reference unit ISS Imaging Science Subsystem (Orbiter science instrument) JPL Jet Propulsion Laboratory J L LGA1 Low-gain antenna #1 LGA2 Low-gain antenna #2 M MAG Dual Technique Magnetometer (Orbiter science instrument) MAPS Magnetospheric and Plasma Science MIMI Magnetospheric Imaging Instrument MP Magnetopause (outer edge of Saturn’s magnetic field) N N + Nitrogen atom with one electron removed N 2 Nitrogen molecule NASA National Aeronautics and Space Administration O O + Oxygen atom with one electron removed ODM Orbiter deflection maneuver OH Hydroxyl radical OH + Hydroxyl radical with one electron removed ORS Optical remote sensing PMS Propulsion module subsystem P PPS Power and pyrotechnics subsystem R RADAR Cassini Radar (Orbiter science instrument) RFES Radio frequency electronics subsystem RFS Radio frequency subsystem RPWS Radio and Plasma Wave Science (Orbiter science instrument) R S Unit of distance in radii of Saturn (one R = 60,330 kilometers) S RSS Radio Science Instrument (Orbiter science instrument) RTG Radioisotope thermoelectric generator RWA Reaction wheel assembly RWI Reaction wheel interface
APPENDIX B S S Bow shock sunward of Saturn’s magnetic field SED Saturn electrostatic discharge SKR Saturn kilometric radiation SOI Saturn orbit insertion SRMU Solid Rocket Motor Upgrade (part of Titan IV launch vehicle) SRU Stellar reference unit SSE Sun sensor electronics SSH Sun sensor head SSP Surface Science Package (Huygens science instrument) T TCS Temperature control subsystem U UK United Kingdom US United States UVIS Ultraviolet Imaging Spectrograph (Orbiter science instrument) V VDE Valve drive electronics VHSIC Very high-speed integrated circuit VIMS Visible and Infrared Mapping Spectrometer (Orbiter science instrument) VVEJGA Venus–Venus–Earth–Jupiter Gravity Assist ACRONYMS & ABBREVIATIONS 145
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Passage to a Ringed World The Cassi
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On the Cover: A collage of images s
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FOREWORD This book is for you. You
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ACKNOWLEDGMENTS This book would not
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Three separate images, taken by Voy
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descent to the surface. The Huygens
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address the challenges of the missi
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Participant Nations* * First flag i
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PROBING A MOON OF MYSTERY Huygens
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TOUR T18-3 TARGETED SATELLITE FLYBY
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SATURN CASSINI-HUYGENS MISSION SCIE
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Cassini-Huygens designed to determi
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In this diagram from his book, Syst
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This Voyager 1 image shows Saturn
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An Extended Atmosphere From Liquid
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Haze layers are also observed above
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IN THE EYE OF THE BEHOLDER Taken fr
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This spectacular view of the edge o
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the interaction was described as a
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have a signature of a tone decreasi
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CONSTITUENTS OF THE TITAN ATMOSPHER
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The processes of plate tectonics an
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tan was accreting, it is possible t
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Surface Science. The highest resolu
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This enhanced Voyager 2 image shows
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Voyager 1 captured this striking im
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Prometheus and Pandora, two tiny sa
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In the stellar occultation experime
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scattering than are larger particle
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In fact, Saturn’s rings — as we
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The satellites of Saturn comprise a
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Before the advent of spacecraft exp
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The bright surface of Saturn’s mo
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Galilean satellites. Most of what i
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duced that one hemisphere is compos
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patches on the surface. Although it
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Artist’s conception of Ithaca Cha
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An artist’s rendition of Saturn
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The MAPS Instruments Coordinated ob
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field reverses direction across the
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SATURN’S MAGNETIC FIELD Saturn’
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Solar Wind Magnetosheath Titan neut
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per atmosphere. Energetic particles
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and plasma wave emissions from narr
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CHAPTER 7 Space mission design aims
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(SOI) propulsive maneuver to initia
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the tour cannot continue. Of course
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crease inclination to this value. T
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This illustration shows the main de
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discussed earlier) and data handlin
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Page 118 and 119: • Study the interaction of the ma
Page 120 and 121: • Study the erosional and electro
Page 122 and 123: midway out on the magnetometer boom
Page 124 and 125: The RPWS instrument will be used to
Page 126 and 127: altitudes down to 40 kilometers abo
Page 128 and 129: dex. A group of platinum resistance
Page 130 and 131: CHAPTER 10 Mission operations are t
Page 132 and 133: PLANETARY MISSION OPERATIONS Functi
Page 134 and 135: two low-gain antennas 1 and will pr
Page 136 and 137: During much of Cassini’s orbital
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Page 140 and 141: AFTERWORD It has been said that in
Page 142 and 143: Developments tied to the Cassini-Hu
Page 144 and 145: APPENDIX A Command. A data transact
Page 146 and 147: APPENDIX A 138 PASSAGE TO A RINGED
Page 148 and 149: APPENDIX A Plasma wave. A wave char
Page 150 and 151: APPENDIX A 142 PASSAGE TO A RINGED
Page 154 and 155: APPENDIX C 146 PASSAGE TO A RINGED
Page 156 and 157: APPENDIX D 148 PASSAGE TO A RINGED
Page 158 and 159: APPENDIX D 150 PASSAGE TO A RINGED
Page 160 and 161: APPENDIX F 152 PASSAGE TO A RINGED
Page 162 and 163: APPENDIX F 154 PASSAGE TO A RINGED
Page 164 and 165: APPENDIX F Peralta, F. and S. Flana
Page 168: National Aeronautics and Space Admi
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