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San José State University’s Microsatellite Project Sept 13, 2000

Spartnik. San José State University’s Microsatellite Project Sept 13, 2000. Project Spartnik Objectives. To design, construct, test, and operate a microsatellite by primarily undergraduate students To give students practical design experience in an interdisciplinary team

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San José State University’s Microsatellite Project Sept 13, 2000

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  1. Spartnik San José State University’s Microsatellite Project Sept 13, 2000

  2. Project Spartnik Objectives • To design, construct, test, and operate a • microsatellite by primarily undergraduate • students • To give students practical design • experience in an interdisciplinary team • environment • Use and enhance current microsatellite • technologies

  3. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications • (TT&C) • Ground Station • Mobile Ground Station (MGS)

  4. Structures Subsystem Spartnik Shell and Trays

  5. Structures Subsystem Launch Vehicle Adapter

  6. Structures Subsystem Antenna System • Purpose • Meet Launch Criteria • Communication Relay • Solar Pressure Paddles • Concept • Spring Loaded Release • Mechanism • Reliable

  7. Structures Subsystem Manufacturing • Spartnik Integration Procedure (SIP) • 3 Stages • System Tests • Satellite Test

  8. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications • (TT&C) • Ground Station • Mobile Ground Station (MGS)

  9. Class 100 Class 1000 * * * * * * * * * * * * * * * * Cleanroom Subsystem Spartnik Cleanroom • Cleanroom Specs • 3 laminar-flow hoods mounted on • C-frames • Enclosed area of: 110 Square feet • Cleanliness level: Class 100 under hoods Class 1000 general area

  10. Cleanroom Subsystem Spartnik Cleanroom

  11. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications • (TT&C) • Ground Station • Mobile Ground Station (MGS)

  12. LV & Orbit Subsystem Desired Orbital Parameters • Design Parameters: • Minimum lifetime of two years • Altitude range of 450 - 900 (km) • Maximize duration of passes • Inclination greater than 40o

  13. LV & Orbit Subsystem Candidate Launch Vehicles • Small • Athena • Pegasus • Minotaur • Medium • Kosmos • Intermediate • Sea Launch • Large • Proton • Ariane V • Delta IV

  14. LV & Orbit Subsystem Safety Analysis • Lockheed Martin California State • University Cooperative • Microsatellite Safety Certification • Certification Template • Microsatellite Spartnik safety certified

  15. LV & Orbit Subsystem Candidate Launch Sites Kourou French Guiana

  16. LV & Orbit Subsystem Candidate Launch Sites Wallops Flight Facility Western Test Range Vandenberg AFB Eastern Test Range Cape Canaveral

  17. LV & Orbit Subsystem Work In Progress • Acquisition of launch vehicle • Ariane5 • Minotaur • Delta • Sea Launch • Athena • Proton • Pegasus

  18. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications • (TT&C) • Ground Station • Mobile Ground Station (MGS)

  19. Payload Subsystem Onboard Payloads • Micro-Meteorite Impact Detector • (MMID) • Kodak Color Digital Camera

  20. Payload Subsystem Camera Box Design • Material • 6061 T-6 aluminum • 1/4” top • 1/8” sides and bottom • Dimensions • 8.6” x 8.6” x 2.65” • Camera mounting • Horizontally under +Z face • Space rated foam

  21. Payload Subsystem Payload Placement MMID Side View Top View (+Z face)

  22. Payload Subsystem Mirror, Lens and Periscope Placement • Periscope Housing • Lenses & Mirror • IR & UV Filters • (in progress)

  23. Payload Subsystem MMID • Piezoelectric strip sensor • 6.75 in. x 0.86 in. x .008 in. • Records impact occurrence and • magnitude as voltage pulses

  24. Payload Subsystem Payload Block Diagram Spartnik’s Antennas Camera SJSU Ground Station CPU MMID

  25. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control • (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications (TT&C) • Ground Station • Mobile Ground Station (MGS)

  26. Attitude Determination and Control Subsystem • Hardware • 1 Nutation Damper • 8 Permanent Magnets • 4 Hysteresis Rods • 8 Solar Pressure Paddles • Motion desired • 2 tumbles per orbit • 0.4 revolution per minute spin rate Flight Hardware

  27. Attitude Determination and Control Subsystem Controlled Tumble

  28. Attitude Determination and Control Subsystem Earth Horizon Sensors

  29. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control • (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications (TT&C) • Ground Station • Mobile Ground Station (MGS)

  30. Power Control Box Power Tray Battery Boxes Electrical Power Subsystem Overview • Main Components • Solar Panels • Power Controller • Batteries • Satellite Wiring

  31. Electrical Power Subsystem Solar Panels • Solar Panel Characteristics: • GaAs Cells Total 40 strings Each string consists of 12 cells TOTAL CELLS = 480 • Optimum power output: 8 Watts ( 9 V @ 0.8 A ) • Blocking diodes • Electromagnetic interference • Donated by ASEC

  32. Electrical Power Subsystem Battery Packs • 6 NiCd cells in series • 4 A-Hr • Nom. Voltage = 7.2 VDC • SAFT • Internal thermocouples • Aluminum housing • Xylan coating (AIC) • DB 9 connector • Acquisition in progress

  33. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and Communications (TT&C) • Ground Station • Mobile Ground Station (MGS)

  34. Thermal Subsystem Overview • Passive Thermal Control • Internal radiation • Spacers provide conduction path • Radiation to space • Thermal monitoring • Integrated circuit temperature transducers • Provide data to camera and battery • manufacturers • Thermal analysis • SINDA • SINDA 3D

  35. Thermal Subsystem SINDA 3D

  36. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and • Communications (TT&C) • Ground Station • Mobile Ground Station (MGS)

  37. Telemetry Tracking and Command Subsystem Overview • Computer Hardware • Computer Software • Ground Station

  38. Telemetry Tracking and Command Subsystem Ground Station • Autonomous Satellite Communication • Multitasking Automated Track and Control • MS Windows NT • Receive Stored + Realtime Telemetry • Command Realtime • Database Telemetry/Payload Data Manipulation • Public Software Application (Portable Platform) • Public Internet Access for Data SJSU Ground Station Operator SJSU College of Engineering

  39. Telemetry Tracking and Command Subsystem Public Access • Beacon with Constant Telemetry Downlink • HAM Radio User Chat Room • File Transfer via PACSAT (similar to FTP) • Command Camera Real-time • Download picture immediately • Download Stored Telemetry, Pictures • (Files) and MMID Data

  40. Spartnik Subsystems • Structures • Cleanroom • Launch Vehicle (LV) and Orbit • Payload • Attitude Determination and Control (ADAC) • Electrical Power • Thermal • Telemetry, Tracking and • Communications (TT&C) • Ground Station • Mobile Ground Station (MGS)

  41. Mobile Ground Station

  42. Mobile Ground Station Sample Designs

  43. Spartnik Outreach • Sharing the Knowledge • K-12 • Los Paseos Elementary School • Santa Teresa High School • Independence High School • Menlo-Atherton High School • Junior Colleges • Mission College • West Valley College • Bakersfield College • Universities • University of Washington • UC Santa Cruz • Santa Clara University • Stanford University

  44. Industry Mentors • Pat Machmiller • Dave Nawrocki • Jack Lovegren • Eric Abrahamson • Sean Medina • Kevin Friend • Kevin Bilger • Steve Petersen • Ron Fischler • John Mattingly • Mike McCormick • Jim Currier • Carl Strombaum • Steve Tyley • Len Kwiatkowski • Jeff Nokes

  45. Industry Contributors • Lockheed Martin • Corporation • UTC-CSD • Eagle-Picher • Satellite Power • Corporation • Optical Coating • Laboratories Inc. • Kodak • Teledyne • Flow Star Corp. • Hewlett Packard • NuSil • Stanford Satellite • Development Lab • Shur-Lok • USGS • Logitech • Teklam • Dexter Magnets • Richmond Aircraft • LL Grace • Communications • Lord Corp. • Packaging Systems Inc.

  46. Spartnik www.engr.sjsu.edu/spartnik

  47. Spartnik San José State University’s Microsatellite Project Sept 13, 2000

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