TG27886 Mars Observer i . I PHASE 0 SAFETY REVIEW DATA PACKAGE !r / 7 c $ ‘ . .\+\ ’\ (EASA-CR-180526) WARS GBSEEVEE: PHx, ASE 0 \ 2AFETP REVIEW DATA PACKAGE (ECA b187-2 1019 Astro-Electronics Liv.) 121 I: CSCL 22B Unclas I 63/18 43554 \ b. 1) AstrolSpace Division A DIVISION OF RCA AEROSPACE AND DEFENSE This report was prepared for the Jet Propulsion Laboratory, California Institute of Technology, sponsored by the National Aeronautics and Space Adm in istrati on. I MARS OBSERVER c NATIONAL AERONAUTICS AND SPACE ADMINISTRATION/ t i - SPACE TRANSPORTATION SYSTEU PHASE 0 SAFETY REVIEW DATA PACKA6E 16-27886 November 17, 1966 Oreparod By: RCA Astro-Electron~cs 0.0. Box 800 Princeton, New Jersey 08540 Prepared For: Callfornla Instltute Of Technology Jet Propulrlon Laboratory Pata d ma, C8 11 f ornI 8 91 I09 Contract No. 957444 DRD NO, SA004 & SA007 k L Wan a g @r Mcrrt Observw Sprcecraf t System Saf ety-off lce JPl 391 \ \ \ PREFACE This Phase Zero NASA Safety Review Data Package has been prepared by RCA Astro-Electronics Division for the California Institute Of Technology Jet Propulsion Laboratory. RCA has made maximum use of the experience gained with the NASA safety process on previous spacecraft programs i n the preparation of this package. This package also reflects the continuing effort at RCA to refine our spacecraft safety packages. We believe that this package i s totally responsive to the NASA safety requirements (as detailed i n NHB 1700.7A, and KHB 1700.7A). This package has been prepared as outlined i n JSC-13830A and the Mars Observer safety analysis has been performed using the guidelines i n JSC-11123, as specified i n JSC-13830A. RCA i s proud t o present the Mars Observer Phase Zero NASA Safety Review Data Package. t I nanager RCA Mars Observer Program a, %w&LLhk Ni olas P. R Paul F. Kaskiewicz Prbduct AssurKce Administrator Systems Engineering Manager RCA Mars Observer Program RCA Mars Observer Program 4- L, Charles R. Larsen Manager Lead Engineer - Mars Observer RCA Space Transportation Group RCA Space Transportation Group Section Title Page I 1 .o The Mars Observer Spacecraft 1 1.1 Hission Overview 2 1.2 Spacecraft Description 3 1.2.1 Communications 3 1.2.2 Cornrnand And Data Handling 5 1.2.3 Attitude And Articulation Control 5 1.2.4 Electrical Power 5 * 1.2.5 Thermal Control 5 1.2.6 Structure 6 1.2.7 Propulsion 6 1.3 Scientific Payload 7 1.4 TOS/STS Interface 8 1.4.1 Nechanical Airborne Support Equipment a 1.4.2 Electrical Airborne Support Equipment 10 1.5 Hission Scenario 15 1.5.1 Launch And Ascent 17 1.5.2 On-Orbit And Deployment 17 2.0 Safety Critical Spacecraft Subsystems 21 2.1 Communications 22 2.2 ComRand And Data Handling 25 2.3 Electrical Power 28 2.4 Thermal Control 31 2.5 Structure, Cabling, and' Mechanisms 32 2.5.1 Solar Array 35 2.5.2 Instrument Booms 37 2.5.3 High 6aSn Antenna Mechanisms 39 2.5.4 Separation Clamp Band 42 2.5.5 Cab 1i n g 42 2.6 Propulsion 44 2.6.1 Bipropellant Propulsion System 44 2.6.2 Hydrazine Propulsion System 46 3.0 Ground Support Equipment 48 3.1 Electrical Ground Support Equipment (EGSE) 49 3.1.1 Spacecraft Checkout Station (SCS) 49 3.1.2 Launch Site Equipment (LSE) 50 3.1.2.1 SCS Interface Equipment (CSIE) 52 3.1.2.2 Remote Located Equipment (RLE) 53 3.1.2.3 T-0 Umbilical Test Set (RLE) 54 3.1.2.4 Dynamic Spacecraft Simulator (DSS) 56 3.1.2.5 T-0 Umbilical Simulator 57 3.1.3 Stray Voltage And Bridgewi re Checker 57 3.1.4 Ordnance Device Simulator 57 3.1.5 Thruste r Si mu 1a tor 58 - - - Section Title 3.2 Mechanical Ground Support Equipment (MGSE) 59 3.2.1 Spacecraft Workstand 59 3.2.2 Spacecraft Vertical Lifting Fixture 59 3.2.3 TOS Adaptor Simulator 60 3.2.4 Workhorse Mamn Band 60 3.2.5 Spacecraft Shipping And Storage Container 60 3.2.6 Propulsion Subsystem Ground Servicing Equipment 61 4.0 Ground Operations Scenario 66 4.1 Prelaunch Operations 68 4.1.1 Payload Processing Facility (PPF) Operations 68 4.1.2 Payload Ordnance Processing Area Operations 68 4.1 -2.1 Nondestructive Test Facility (NDTL) 68 4.1.2.2 Electromechanical Testing (EMT) Facility 68 4.1.2.3 Uissile Research Test Building (HRTB) 69 4.1.3 Hazardous Processing Faci 11t y (HPF) 69 4.1.4 Vertical Processing (VPF) Operations 69 4.1.5 Orbiter Processing Facility (OPF) Operations 70 4.1.6 Launch Pad Operations 70 4.1.7 Orbiter Integrated Operations 70 4.2 Post 1a unc h Operat io ns 72 4.3 Postlanding Operations 73 4.4 Contingency Operations 74 4.4.1 Prelaunch Abort 74 4.4.2 Return To Launch Site Abort 74 4.4.3 Secondary And Contingency Landing Sites 74 5.0 Requi rements Hatrix 75 6.0 Phase 0 Hazard Reports 79 6.1 Phase 0 Flight Hazard Reports 80 6.2 Phase 0 Ground Hazard Reports 101 Appendix A Scientific Payload Safety Data (submitted under seperate cover) - No. Title Page 1-1 Pre-Assembly View of the Nars Observer 4 1-2 Spacecraf t/TOS/Orbi ter 9 1-3 Mars Observer/TOS Cargo Element 11 1-4 Spacecraft/TOS Adaptor 12 1-5 Spacecraft/TOS/Orbiter Coordinate System 13 1-6 Equipment Hounting on TOS Cradle 14 . 1-7 Mission Scenario 16 1 -8 Hars Observer Mission Phases, Launch to Insertion 18 1- 9 Mars Observer Hission Phases, Insertion to Quarantine 18 2 -1 Antenna Locations 22 2 -2 Comunications Subsystem Block Diagram 23 2 -3 CQDH Subsystem Block Diagram 26 2-4 Power Subsystem Block Diagram 29 2-5 h r s Observer Mission Configuration 32 2 -6 h r s Observer Launch Configuration 33 2 -7 Solar Array Restraint 35 2 -8 Stowed Solar Array and Boom 36 2 -9 Deployment Sequence 38 2-1 0 Nova and Dynamics Explorer Booms 40 2-1 1 H6A Boom Restraint 41 2-1 2 Bipropellant Propulsion System Schematic Diagram 45 2-1 3 Hydrazi ne Propu1 s io n System Sc hemati c Diagram 45 2-1 4 Spacecraft Axis Conventions and Thruster Locations 47 3 -1 Spacecraft Checkout Station 49 3- 2 LSE Block Diagram 51 3 -3 CSIE 53 3-4 RLE 53 3 -5 DSS/TUTS 54 3 -6 TUTS Test Configuration 55 3 -7 DSS Test Configuration 56 3 -8 Spacecraft Workstand 59 3- 9 NTO Load Cart 63 3-1 0 Hydrazine Load Cart 64 3-1 1 Pressurant Load Cart Schematic 65 4 -1 Launch Site Flow 67 5-1 Requirements Matrix 76 NYMS AND ABBREVIATIW 4rss 4r Steradian Sun Sensor AACS Attitude and Articulation Control Subsystem ASC American Sate1 l i t e Corporation AS€ A ir borne Support €quip ment ATN Advanced TIROS-N BCA Battery Charge Assembly BRU Battery Reconditioning Unit BVR Battery Voltage Regulator C&DH Comnand and Data Handling CAD Computer Aided Design CIU Controls Interface Unit Annex CMU Comnand Master Unit CPC Controls Power Converter CPU Central Processing Unit CSA Celestial Sensor Assembly CSIE Checkout Station Interface Electronics cxu Controls Interface Unit Annex DBS Direct Broadcast Satellite DET D ir ect Energy Transfer DOD Department of Defense DSS Dynamic Spacecraft Simulator DTR Digitial Tape Recorders EASE Electrical Airborne Support Equipment EOF Engineering Data Formatter EGSE Electrical Ground Support Equipment EHI E 1e ctromagnetic Interference E#R Electromagnetic Radiation EVA Extra-Vehi cu 1a r Act iv it y 6PC General Purpose Computer 6RS Gama Ray Spectrometer GSE Ground Support Equipment HPF Hazardous Processing Facility HZ Hertz I TOS Improved TIROS JSC Johnson Space Center KBPS K il a-Bi ts Per Second KHB Kennedy Handbook KSC Kennedy Space Center LSE Launch Site €quip ment HAG Magnetometer HAS€ Mechanical Airborne Support Equipment HDH Mu1t ip le xer - Demul tip le xer HGSE Hechanical Ground Support Equipment MHSA Mars Horizon Sensor Assembly HLP Hobi l e Launch Platf om MMH Monomethy 1 Hyd razi n e MON-1 Nitrogen Tetraoxide + 0.8% Nitrous Oxide MSFC Harshall Space Flight Center nvs Majority Vote Sequencer NHB NASA Handbook PC Pouer Converter PD I Payload Data Interleaver PDS Payload Data Subsystem PHD Propellant Management Device PHV Power Master Unit POCC Payoload Operations Control Center ROH Read Only Hemory PPF Payload Processing Facility PRA Pyrotechnic Relay Assembly PROM Programnable Read Only Memory PSE Pouer Supp 1y E 1e ctr onic s RAM Random Access Memory REA Reaction Engine Assembly RLE Remote Located Equipment RSS Rotating Servi ce Structure RWA Reaction Wheel Assembly s/c Spacecraft SAD Solar Array Drive sc P Standard Controls Processor scs Spacecraft Checkout Station scu Signal Conditioning Unit SEPET System Electrical Performance Evaluation Test SIU Shuttle Interface Unit SRH Solid Rocket Hotor SSP Standard Switch Panel ssv Space Shuttle Vehicle ST E Special lest Equipment STS Space Transportation System TBD To Be Determined TBS To Be Supplied TCE Thermal Control Electronics T LM l e1 e met ry TUTS T-O Umbilical Test Set VPF Vertical Processing Facility xsu Cross Strap Unit ~ 1.0 The Mars Observer Spacecraft The Mars Observer i s a planetary exploration spacecraft that w i l l be used t o explore Mars. The spacecraft i s being built for the California Institute Of Technology Jet Propulsion Laboratory (JPL) by RCA Astro-Electronics Division. RCA, as the prime contractor, provides the spacecraft bus and i t s associated subsystems and conducts the system integration and test activities for the entire flight system. The scientific payload i s provided by JPL to RCA for integration with the spacecraft bus. The scientific payload subcontracts are managed by JPL. This package i s directed toward the RCA provided bus and spacecraft subsystems while the scientific payload i s discussed i n an appendix to this package t o be supplied by JPL. 1