Oct. 9 (UPI) — NASA TV is streaming the second of three October spacewalks on Tuesday morning. Coverage begins at 6:30 a.m. EDT, but the spacewalk won’t commence until 8:05 a.m.
Expedition 53 Commander Randy Bresnik of NASA, who led last week’s spacewalk — the first of three — will once again be joined by Flight Engineer Mark Vande Hei, also of NASA.
For Bresnik, who will also lead the third spacewalk on Oct. 18, Tuesday’s mission will be his fourth spacewalk. For Vande Hei, the spacewalk will be his second.
Last week, the duo used their six hours outside the space station to replace one of the two Latching End Effectors on Canadarm2, the space station’s robotic arm. One of the effector’s mechanical latches stalled last month.
“They also accomplished a couple of get-ahead tasks, including removal of the multi-layer insulation from a spare direct current switching unit,” NASA reported after the completion of last week’s mission. “They also prepared a flex hose rotary coupler for future use.”
The effectors serve as a grappling mechanism, allowing the space station’s arm to receive and manipulate visiting cargo vehicles and payloads. The effectors, or LEEs, also field and transmit telemetry data to the rest of the Mobile Base System, or MBS. Canadarm2 is anchored to the MBS and can be moved along the base’s truss by the LEEs.
Both Tuesday’s spacewalk and the third spacewalk, scheduled for next week, will be devoted to lubricating the newly installed end effector and replacing cameras on the left side of the station’s truss and the right side of the station’s U.S. Destiny laboratory.