13 Minutes Presents: The Space Shuttle

13 Minutes to the Moon: 8. ‘We’re go for powered descent’

Jun 30, 2019
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ANECDOTE

Mission Control's Human Pre-Landing Moment

  • Mission control team was highly anxious before the lunar landing but showed intense focus and professionalism.
  • Pre-landing bathroom rush and silence highlighted their human side under pressure.
INSIGHT

The Precision of Apollo's P63 Program

  • Program P63 precisely calculates engine ignition time and attitude based on current position and velocity.
  • The computer updates every two seconds to keep the lunar module on the trajectory.
ANECDOTE

Steve Bales' Calm Before Storm

  • Steve Bales felt a brief calm before the high-stakes decision for the powered descent go/no-go.
  • Mission control line was unusually silent, reflecting the gravity of the moment.
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