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UN120

UN120. Video Frame Analysis at Lift-off. T=0,10:24:636. T=.033,10:24:669. T=.066,10:24:702. T=.099,10:24:736 (Rolling frame). T=.132,10:24:769. T=.165,10:24:802. T=.198,10:24:835. T=.231,10:24:869. T=.264,10:24:902. T=.297,10:24:935. T=.363,10:24:969. T=.396,10:25:002.

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UN120

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  1. UN120 Video Frame Analysis at Lift-off

  2. T=0,10:24:636

  3. T=.033,10:24:669

  4. T=.066,10:24:702

  5. T=.099,10:24:736 (Rolling frame)

  6. T=.132,10:24:769

  7. T=.165,10:24:802

  8. T=.198,10:24:835

  9. T=.231,10:24:869

  10. T=.264,10:24:902

  11. T=.297,10:24:935

  12. T=.363,10:24:969

  13. T=.396,10:25:002

  14. T=.429,10:25:035

  15. T=.462,10:25:069

  16. Raspberry Pi System Log • Shows system ran for 10:25 • Series of reboots (7 of them) – 3 seconds of boot time per reboot – 21 seconds before system no longer ran • System found with all GPIO pins bent as if inside of Avionics bay. • Conclusion: Internal short of GPIO Header pins at t=10:25, 0.462 seconds into flight • Reset events after 3 seconds into boot for 21 seconds during CATO

  17. Timeline • Lift-Off - 10:24:36 • Video Loss/Short – 10:25:069 (.462 seconds after lift-off) • Breakup 7 seconds into flight (~ 6.5 seconds later) • 16.5 more seconds until Avionics sled fell • Avionics sled remained in this location for 9 months

  18. SLED (Before)

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