LRO - Peoria Riverfront Museum

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LRO - Peoria Riverfront Museum

Lunar Reconnaissance OrbiterProject Overview & StatusNASA Goddard Space Flight Centercraig.r.tooley@nasa.govhttp://lunar.gsfc.nasa.gov/


NASA’s Vision For Space ExplorationLRO’s RoleRobotic Lunar Exploration ProgramJan. 14 2004 – The President announced anew vision for space exploration thatincluded among its goals “… to return to themoon by 2020, as the launching point formissions beyond. Beginning no later than2008, we will send a series of roboticmissions to the lunar surface to researchand prepare for future human exploration.”


Lunar Reconnaissance OrbiterMission ObjectivesLocate Potential ResourcesHydrogen/water at the lunar polesContinuous solar energyMineralogySafe Landing SitesHigh resolution imageryGlobal geodetic gridTopographyRock abundancesSpace EnvironmentEnergetic particlesNeutrons


LRO Follows in the Footsteps of theApollo Robotic Precursors• Apollo had three (Ranger, Lunar Orbiter and Surveyor) robotic exploration programs with 21precursor missions from 1961-681. Lunar Orbiters provided medium & high resolution imagery (1-2m resolution) which wasacquired to support selection of Apollo and Surveyor landing sites.2. Surveyor Landers made environmental measurements including surface physicalcharacteristics.3. Ranger hard landers took the first close-up photos of the lunar surface• Exploration needs the above information to go to new sites and resource data to enablesustainable exploration.Lunar Orbiter ETU in Smithsonian Air & SpaceMuseum, Washington DC


LRO Mission Overview• Launch in late 2008 on a EELVinto a direct insertion trajectory tothe moon. Co-manifested withLCROSS spacecraft.• On-board propulsion system usedto capture at the moon, insert intoand maintain 50 km mean altitudecircular polar reconnaissanceorbit.• 1 year mission with extendedmission options.• Orbiter is a 3-axis stabilized, nadirpointed spacecraft designed tooperate continuously during theprimary mission.• Investigation data productsdelivered to Planetary DataSystems (PDS) within 6 months ofprimary mission completion.


LRO Mission OverviewLaunch: October 28, 2008Lunar Orbit InsertionSequence, 4-6 DaysPolar Mapping Phase,50 km Altitude Circular Orbit,At least 1 YearMinimum EnergyLunar Transfer ~ 4 DaysCommissioning Phase,30 x 216 km AltitudeQuasi-Frozen Orbit,Up to 60 DaysNominal End of Mission: February 2010


LRO Instrument SummaryINSTRUMENTSPONSORSHIPMEASUREMENTLVL 1 RQMTS TRACEABILITYCRaTERCosmic RayTelescope for theEffects of RadiationPI:Harlan Spence, BUIM: Rick Foster, MITISE: Bob Goeke, MITTissue equivalent response to radiationLET energetic particle spectra 200 keV– 1 GeV /nucM10 - Radiation EnvironmentM20 - Radiation on Human-equivalent tissueDLREDiviner LunarRadiometer ExperimentPI: David Paige, UCLAIM: Wayne Hartford, JPLISE: Marc Foote, JPLBetter than 500m scale maps oftemperature, rock abundances,mineralogyM50 - Surface TemperaturesM80 - Surface Features and HazardsM90 - Polar IlluminationM100 - Regolith ResourcesLAMPLyman-AlphaMapping ProjectPI: Alan Stern, SwRIIM: Ron Black, SwRIISE: Dave Slater, SwRIUV Albedo maps of the permanentlyshadowed areasMaps of frosts in permanentlyshadowed areas, 3km resolutionM60 – Images of PSRsM70 – Subsurface IceLENDLunar ExplorationNeutron DetectorPI: Igor Mitrofanov, IKIDeputy PI: Roald Sagdeev, UMDIM: Anton Sanin, IKIISE: Maxim Litvak, IKIMaps of hydrogen in upper 2m ofMoon at 10km scalesGlobal distribution of neutrons aroundthe MoonM10 – Radiation EnvironmentM70 – Subsurface IceM110 – Hydrogen MappingLOLALunar OrbiterLaser AltimeterPI: David Smith, GSFCCo-PI: Maria Zuber, MITIM: Glenn Jackson,GSFCISE: John Cavanaugh, GSFC~50m scale polar topography at


LRO-LCROSS Launch Segment• Launch Services Provided by KSC• Atlas V 401 through NLS Contract• 2000 kg; Sun Exclusion thru Ascent• 4m fairing; H/K data thru EELV I/F• Co-manifested with LCROSS lunarmission• Launch Site Processing at Astrotechincluding Fueling & Control CenterLROLCROSS4.00 m2.25 mStack CGHeightBoattailAccess Doors(4)CEM


LRO Ground Segment Overview• Mission Operations Center& Flight Dynamics Facility atGSFC• Primary Ground Station atWhite Sands (Ka & S-Band)• Global S-Band TT&Cprovided by NASA GN & SN.• Science Operations Centers(SOC) at PI institutions• S-band tracking augmentedby laser ranging system toimprove accuracy.


LRO Mission – Current Status• The LRO Mission was confirmed in May 2006 and successfully completed itsmission CDR in November 2006• Instruments completed CDRs during Spring and Summer 2006 and are proceedingwith fabrication and testing.• All spacecraft bus avionics are in ETU testing and proceeding toward flightfabrication• All major procurements (ACS sensors, battery, gimbal actuators, RF systems) areawarded and on schedule for required delivery dates.• Mission Operations Center being outfitted at GSFC• White Sands 1 (WS1) Ka-S Band primary ground station under construction• Project Reserves (Budget, Schedule, Mass, Power) are stable and at acceptablelevels.2004 2005 2006 2007 2008Transfer toMini-RFEELVLCROSSESMDAddedDecisionCo-manifested2/18/182/7Funding Available SRRPDRCR4/25/17PER7/15MRR8/18SHIPREQ’DLaunch3/4/04ORDT6/18AO Release12/23AO Select6/16 – 10/05IPDRs4/13 – 7/3ICDRs11/6CDR5/1Begin S/C BusI&T~10/15InstrumentDelivery toI&T10/28LRD

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