HST SM4 RSU / Gyroscope Replacement EVA

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Video source record: https://images.nasa.gov/details/GSFC_20080822_HST_m10234_RSU

HST SM4 RSU / Gyroscope Replacement EVA
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2008-08-22 - images.nasa.gov

Summary

Hubble was designed to use three of six onboard gyroscopes to meet its very precise pointing requirements, with the other three held as spares. Gyros have limited lifetimes, and three of the six (all installed in late-1999) are currently working. Following a thorough analysis and testing by engineer

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Details

  • Source collection: NASA
  • License: Public Domain (US Government)
  • Category: Space

Wikipedia cross-links

Academic references

  1. Primary source record: https://images.nasa.gov/details/GSFC_20080822_HST_m10234_RSU
  2. Topic lookup: Google Scholar search for “HST SM4 RSU / Gyroscope Replacement EVA”