The Remote Manipulator Arm grabbed the dying satellite - and the clock began copertina

The Remote Manipulator Arm grabbed the dying satellite - and the clock began

The Remote Manipulator Arm grabbed the dying satellite - and the clock began

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A Remote Manipulator Arm must grapple a dying 15,400-pound satellite in low orbit while a countdown ticks from launch - did they make it in time?

The Remote Manipulator Arm grabbed the dying satellite - and the clock began

In this episode, we follow the mission that put an astronaut, a robotic arm, and a decaying communications satellite on a collision course with the clock. What decisions and actions did the crew take as the satellite’s orbit fell and time ran out?

Person: John Michael Lounge
Event: STS-51-I deployment and capture attempt
Date: Launch August 27, 1985
Location: Low Earth orbit
Payload mass: 15,400 pounds

- Lounge operated the Shuttle Remote Manipulator System to deploy and later approach satellites from Discovery’s payload bay.
- SYNCOM IV-3 failed to fire its perigee kick motor and was left in a decaying low orbit months before STS-51-I.
- Ground teams attempted multiple remote fixes for the dead satellite before the Shuttle mission launched.
- Discovery carried three satellites deployed successfully before the crew prepared to rendezvous with the already-orbiting SYNCOM IV-3.
- The mission timeline started with a running clock from launch, setting strict windows for rendezvous and capture operations.

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