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Servicing Mission 4 - Revisited

Servicing Mission 4 - Revisited. Ken Sembach STScI Hubble Project Scientist April 27, 2009. Photo Credit: Michael Brown, floridatoday.com (September. 20, 2008). Photo Credit: NASA (April 17, 2009). Photo Credit: NASA / Kim Shiflett (April 18, 2009). Payload canister lift, Pad 39A

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Servicing Mission 4 - Revisited

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  1. Servicing Mission 4 - Revisited Ken Sembach STScI Hubble Project Scientist April 27, 2009

  2. Photo Credit: Michael Brown, floridatoday.com (September. 20, 2008)

  3. Photo Credit: NASA (April 17, 2009)

  4. Photo Credit: NASA / Kim Shiflett (April 18, 2009)

  5. Payload canister lift, Pad 39A (April 18, 2009) Photo Credit: NASA / Kim Shiflett (April 18, 2009)

  6. LON Rescue Mission to SM4 (STS-400) Rescue Orbiter (Endeavor) grapples SM4 Orbiter (Atlantis) Crew Transfer is via EVA • Only SM4 crew goes EVA, not LON crew • Atlantis RMS used if available, but not mandatory

  7. LDRI/IDC WLE and Nose Cap Surveys • LDRI prime sensor (No daylight required, sensor has illuminator) • IDC “bonus coverage/best effort imagery ” • If IDC imagery resolution adequate, then it will be used to clear areas of interest (AOI), thus not requiring dedicated focused inspection. LDRI = Laser Dynamic Range Imager LCS = Laser Camera System IDC = Digital Camera ITVC = Intensified Television Camera Flight Day 2 Surveys Robotic arm extension - Orbiter Boom Sensing System (OBSS) is used. • ITVC Tile Acreage Survey • Replaces Flight Day 3 “RPM Photography” performed on ISS Missions • Totally re-designed contingency tile survey that was originally planned for STS-114

  8. Photo Credit: NASA / Cory Huston (April 3, 2009)

  9. STS-125 Crew Michael Massimino (Mission Specialist) Michael Good (Mission Specialist) Gregory Johnson (Pilot) Scott Altman (Commander) Megan McArthur (Mission Specialist) John Grunsfeld (Mission Specialist) Andrew Feustel (Mission Specialist)

  10. Photo Credit: NASA / Kim Shiflett (March 18, 2009)

  11. Photo Credit: NASA / Kim Shiflett (April 2, 2009)

  12. Hubble Servicing Mission 4 • NET May 11, 2009 on Space Shuttle Atlantis (STS-125) Key Elements • Replacement Science Instrument Control & Data Handling Unit • Two new science instruments • Wide Field Camera 3 (WFC3) and the Cosmic Origins Spectrograph (COS) • Replacement of batteries (needed for power during orbital night) • Replacement of gyros (used to determine HST pointing) • Replacement of one of the three Fine Guidance Sensors (FGS) • Repair of the Space Telescope Imaging Spectrograph (STIS) • Repair of the Advanced Camera for Surveys (ACS) • Replacement of thermal blankets (used to maintain temperature) • Installation of Soft Capture Mechanism (SCM)

  13. Bay 5 Bay 6 Bay 7 Bay 8 Bay 9 Bay 10 Equipment Bays 5 - 10 Bay5 Transmitters Solid State Recorders Bays 6, 9 Reaction wheels Bay 7 Various electronics Bay 8 Safing electronics Science tape recorder Retrieval mode gyros Bay 10 SI C&DH Data Interface Unit 5 Electronic Control Units

  14. Science Instrument Control & Data Handling (SI C&DH) Unit on Bay 10 door • NASA Standard Spacecraft Computer (NSSC-1) • Standard Interface (STINT) • Memory modules • Power Control Unit (PCU) • Control Unit / Science Data Formatter (CU/SDF) • Remote Interface Unit (RIU) • Multiplexed Data Bus (MDB)

  15. SI C&DH2 Ready for Flight (April 2, 2009)

  16. HST Servicing Mission 4 (SM4) Configuration Soft Capture Mechanism Cosmic Origins Spectrograph Rate Sensor Units Fine Guidance Sensor IMAX Multi-use Logistic Equipment Carrier Batteries Wide Field Camera 3 Flight Support System Orbital Replacement Unit Carrier Super Lightweight Interchangeable Carrier Airlock

  17. SM4 Configuration (side view)

  18. STScI Participation During SM4 • SMS generation / scheduling • Preparation of HST for capture and initiation of activities after release • Last data obtained up to launch + a few hours • Aliveness/functional test analyses • Evaluation of test results (telemetry / science data), anomaly resolution • Engineering support • Telemetry monitoring, anomaly resolution, information and data distribution • Project management support at JSC and GSFC • Anomaly resolution, replanning

  19. We’re Ready For Launch! STS-124 Launch (Discovery) on May 31, 2008

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