The fifty‑foot robotic arm gripped Zarya - and the station's fate ticked down
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The fifty‑foot robotic arm gripped Zarya - and the station's fate ticked down
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概要
The fifty‑foot robotic arm gripped Zarya - and the station's fate ticked down
In this episode, we follow the tense, technical moment when the shuttle Endeavour attempted the first on-orbit assembly of the International Space Station. It covers the lead-up to the capture of Zarya, the stakes of millimeter-level alignment, and the decisions that had to be flawless in orbit-could one operator bring it home?
Person: Nancy Currie-Gregg
Date: December 7, 1998
Location: Low Earth orbit, ~220 miles above Earth
Event: STS-88 capture and mating of Zarya and Unity
Module: Zarya (first ISS module)
- A fifty-foot Canadarm, operated by one astronaut, had to capture Zarya while both vehicles moved at 17,000 mph.
- Zarya had launched 11 days earlier on a Russian Proton and floated ahead with its docking port aimed at the arm.
- Endeavour closed 4.7 million miles of orbital path over two days to position for the delicate capture.
- The docking required millimeter-level alignment; a single degree off could puncture pressure vessels and scatter debris.
- Nancy Currie-Gregg brought Army helicopter experience, safety and industrial engineering training, and thousands of flight hours to the moment.
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