List of TBDs/TBRs1.0 INTRODUCTION1.1 Purpose1.2 S/C SUB-SYSTEM COMPONENT TABLE2.0 CAD Models3.0 Mechanical Interface Drawing (MID) Guidelines3.1 MID Responsibilities4.0 MICD ExampleDRAFTLunar Reconnaissance Orbiter (LRO) Component Mechanical Interface Control DrawingGuidelines Handbook431-HDBK-000093Expected Release Date: June 30, 2005Expiration Date: December 31, 2010Prepared by: Gordon Casto/543 and Giulio Rosanova/543CHECK THE LRO MIS AT https://lro.gsfc.nasa.govTO VERIFY THAT THIS IS THE CORRECT VERSION PRIOR TO USE.Goddard Space Flight CenterGreenbelt, MarylandNational Aeronautics andSpace Administration431-HDBK-000093Revision -DRAFT-CM FOREWORDThis document is a Lunar Reconnaissance Orbiter (LRO) controlled document. Changes to this document require prior approval of the LRO Project CCB Chairperson. Proposed changes shall be submitted to the LRO Project Configuration Management Office (CMO), along with supportive material justifying the proposed change. Questions or comments concerning this document should be addressed to:LRO Configuration Management OfficeMail Stop 431Goddard Space Flight CenterGreenbelt, Maryland 20771April 25, 2005 ii431-HDBK-000093Revision -DRAFT-Reviewed/Approved By:Referenced Documents:###-MECH-REF-#### LRO Bolt Torque Requirements430-REQT-00011 Mission Requirements Document (MRD), ###-MECH-SPEC-### LRO Mechanical Systems Requirements SpecificationApril 25, 2005 iii431-HDBK-000093Revision -DRAFT-Sub-System Component Mechanical Interface Control Drawing Guidelines HandbookDOCUMENT CHANGE RECORD Sheet: 1 of 1REV/VERLEVELDESCRIPTION OF CHANGEAPPROVEDBYDATEAPPROVED- Baseline Released, per LRO-CCR-####. NAME DATEApril 25, 2005 iv431-HDBK-000093Revision -DRAFT-Table of ContentsList of TBDs/TBRs.............................................................................................................vi1.0 INTRODUCTION....................................................................................................71.1 Purpose...............................................................................................................71.2 SUB-SYSTEM COMPONENT TABLE................................................................72.0 CAD Models............................................................................................................93.0 Mechanical Interface Control Drawing (MICD) Guidelines.....................................93.1 MICD Responsibilities.......................................................................................114.0 MICD Example......................................................................................................12ACRONYM AND ABBREVIATION LIST..........................................................................14April 25, 2005 v431-HDBK-000093Revision -DRAFT-List of TBDs/TBRsItemNo.Location Summary Ind./Org.DueDate1 MM/YYApril 25, 2005 vi431-HDBK-000093Revision -DRAFT-1.0 INTRODUCTION1.1 PurposeThe purpose of this document is to provide guidelines for the preparation of Mechanical Interface Control Drawings (MICDs) for the LRO Orbiter components, both Instruments and S/C subsystems. In order to meet the component accommodation requirements imposed on the Mechanical sub-system team, mechanical interface definition details arerequired from each of the LRO instruments and sub-system groups. This level 2 requirement is captured in the Mission Requirements Document (MRD), 430-REQT-00011, and subsequently imposed in the LRO Mechanical Systems Requirements Specification ###-MECH-SPEC-####. Mechanical interface information is best transmitted and controlled by an MICD. This method provides enough detail about a subsystem component in order that the LRO mechanical team can design the spacecraft structure to accommodate all instrument and sub-system component needs. Specific details of these requirements are listed in this document.1.2 S/C SUB-SYSTEM COMPONENT TABLEThe LRO S/C components are listed in following table.Propulsion Module (PM) Component ICD's Fuel Tank(s)Pressurent TankThrusters (#?)Fuel Pressure Module (FPM)Fuel Control Module (FCM)Plumbing LinesFill & Drain AdaptersCoarse Sun SensorsPM Thermal ComponentsPM Wiring Harness (Including Thermal Heater Blocks, & 1553 Couplers)OMNI Antenna (1)Reaction Wheel Assy. (4)Avionics Module (AM) Component ICD's C&DH PDEPSEBatteryOMNI Antenna (1)Gimbal Control Electronics BoxThermal ComponentsWiring Harness (Including Thermal Heater Blocks, & 1553 Couplers)April 25, 2005 7431-HDBK-000093Revision -DRAFT-Coarse Sun SensorsKa TransmittersKa Transfer SwitchKa WaveguideS-Band HybridS-Band Transponder/Di-plexor S-Band Directional CouplerInstrument Module (IM) Component ICD's LOLALROCLENDLAMPCRaTERDLRE (Diviner)Star Trackers (2)IM Thermal ComponentsIM Wiring Harness (Including Thermal Heater Blocks, & 1553 Couplers)Coarse Sun SensorsGYRO/IRU (1High Gain Antenna Deployment & Articulation System( HGADAS )High Gain AntennaSolar Array Deployment & Articulation System SADASSolar Array (Cells)Coarse Sun SensorsDPLY Wiring Harness April 25, 2005 8431-HDBK-000093Revision -DRAFT-2.0 CAD ModelsIf the Computer Aided Design (CAD) Model of the component is available, it should be provided to the mechanical group. The model will be incorporated into the over-all LRO Orbiter model. Native file format of the CAD package may be used (PRO-E, IDEAS, or SOLID WORKS), standard translation format (STEP, or IGES) may also be used. This model should be reduced to external surfaces, blanket volumes, science FOV, science FOR, and thermal FOV. 3.0 Mechanical Interface Drawing (MID) GuidelinesAn MID shall be developed for each LRO component needing support from the LRO mechanical systems group. Multiple components provided as a sub-assembly may be incorporated onto a single MID.The MIDs shall contain the information listed below, as applicable:- Preferred component orientation as requiredo LRO coordinate definition: +X axis is along the Orbiter Thrust direction, +Zaxis is Lunar Nadir pointing, and +Y completes the right-hand-rule.- Component Identification as requiredo Indicate nomenclature, part number, and location of identification feature.- Component Dimension (Dimensions shall be provided in the native units with tolerances, either metric or English, and the non-native units noted parenthetically)o Overall Package dimensions, physical envelopeo Indicate footprint size, shape, and dimensions, including any critical tolerances.o Indicate minimum material