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  ISS 53: Astronauts replace Canadarm2 'hand'

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Author Topic:   ISS 53: Astronauts replace Canadarm2 'hand'
Robert Pearlman
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Posts: 38168
From: Houston, TX
Registered: Nov 1999

posted 10-05-2017 02:09 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
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Astronauts give a 'hand' to robotic arm on spacewalk outside station

Two U.S. astronauts gave a Canadian robotic arm a hand Thursday (Oct. 5), replacing one of the manipulator's grappling ends during an almost seven-hour spacewalk.

Expedition 53 crewmates Randy Bresnik and Mark Vande Hei, both of NASA, worked outside the International Space Station to swap out a malfunctioning latching end effector (LEE) from the Canadarm2 robotic arm. The LEE — one of two on the 58-foot-long (17.6 meter) space station remote manipulator system (SSRMS) — is used to attach the arm to the orbiting laboratory and to grab hold of equipment or spacecraft in proximity to the outpost.

Robert Pearlman
Editor

Posts: 38168
From: Houston, TX
Registered: Nov 1999

posted 10-10-2017 03:57 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Randy Bresnik and Mark Vande Hei completed their second spacewalk together on Tuesday (Oct. 10), in part lubricating components of the new latching end effector they previously installed on the Canadarm2 robotic arm. They also replaced a faulty camera system.
They also completed a variety of additional tasks, including replacing a smudged lens cover and removing two handrails from outside the tranquility module in preparation for a future wireless antenna installation.

This was the second of three spacewalks planned for October. Bresnik will also lead the next spacewalk Oct. 18 joined by flight engineer Joe Acaba to continue the lubrication of the new end effector and to replace another camera system on the Destiny lab.

The spacewalk on Tuesday lasted 6 hours and 26 minutes, ending at 2:22 p.m. EDT (1822 GMT).

Robert Pearlman
Editor

Posts: 38168
From: Houston, TX
Registered: Nov 1999

posted 10-20-2017 02:06 PM     Click Here to See the Profile for Robert Pearlman   Click Here to Email Robert Pearlman     Edit/Delete Message   Reply w/Quote
Randy Bresnik and Joe Acaba completed their first spacewalk together on Friday (Oct. 20), the third in a series planned around the replacement and servicing of a latching end effector on the Canadarm2 robotic arm.
The two astronauts installed a new camera system on the Canadarm2 robotic arm's latching end effector, an HD camera on the starboard truss of the station and replaced a fuse on the Dextre robotic arm extension.

The duo worked quickly and were able to complete several "get ahead" tasks. Acaba greased the new end effector on the robotic arm. Bresnik installed a new radiator grapple bar. Bresnik completed prep work for one of two spare pump modules on separate stowage platforms to enable easier access for potential robotic replacement tasks in the future. He nearly finished prep work on the second, but that work will be completed by future spacewalkers.

The spacewalk on Friday lasted 6 hours and 49 minutes, ending at 2:36 p.m. EDT (1836 GMT).

All times are CT (US)

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