US EVA-39

Expedition 50 crewmembers Shane Kimbrough (NASA) and Thomas Pesquet (France-ESA), ventured outside the ISS on Friday Jan 13, 2017 to start the second spacewalk in one week dedicated to the integration of new batteries.
The US EVA-39 spacewalk lasted 5 hours and 58 minutes and completed the installation of 3 adapter plates to connect 3 new Li-Ion batteries on the S4 IEA 1A Channel.
These new batteries were previously installed by Dextre days before. See previous post here.

Both astronauts exited the Quest Airlock, Kimbrough was EV1 (red stripes) and Pesquet was EV2 (no stripes).

img_2146 Kimbrough headed out of the airlock towards the front of the ISS.

img_2147 Got a foot restraint and tools from the CETA cart and headed his way towards the S4 segment.

img_2148 Kimbrough getting closer to S4 segment.

img_2150 Thomas Pesquet (with France flag on his shoulder) is at the HTV-6 External Pallet breaking the torque on the bolts holding the Adapter Plates.

img_2153 Kimbrough is seen here preparing his work area. Notice the 2 empty slots on the S4 IEA.

img_2112 This is a diagram of the S4 IEA left by Dextre at that point.

img_2149 Kimbrough is seen here immersed with the ISS hardware surrounding him. He is heading towards the HTV-6 EP to meet Pesquet to retrieve the first 2 Adapter Plates.

img_2151 Kimbrough and Pesquet are now removing Adapter Plates E and F from the EP and then they towed them over to 1A IEA.

Back at the IEA, the duo installed Adapter Plate F in slot 6 (yellow).

The old Ni-H2 battery from slot 4 is placed atop the just installed Adapter Plate F to remain in a passive state for the time being, available as a spare.

With slot 4 freed up, the astronauts installed Adapter Plate E achieving the minimum operational configuration for the 1A channel with Mission Control reporting good connectivity to both batteries.

img_2152 Then the crew went back over to the HTV pallet to retrieve Adapter Plate D, the last part to be installed in this round of outfitting operations.

Adapter Plate E is installed into slot 2 on the IEA. Mission Control confirmed that all 3 of the newly integrated batteries were showing nominal operation, giving the ISS its second Li-Ion driven power channel representing a quarter of the ISS power system.

img_2158 This is the final configuration of S4 IEA 1A Channel. Notice the new artwork done on the model.

img_2145 This is the step to update your ISS S4 IEA 1A channel.

All primary tasks were completed by 3 hours, leaving the crew 2 hours ahead of schedule. With plenty of time left, the team went on to do a series of Get-Ahead tasks.

  • CLPA (Camera/Light Pan/Tilt Assembly) removal at the Mobile Transporter Relay Assembly
  • “Rat’s Nest” engineering imaging
  • Hand rails 0261 and 0262 removal at Destiny’s Lab
  • Node 3 Axial shields

img_2159 Kimbrough removing two hand rails from Destiny module.

Ending the EVA, the pair moved back to the airlock.

In the upcoming days, the 3 old Ni-H2 batteries currently held by Dextre will be moved to the 3 empty slots on the HTV-6 EP.

UPDATE:

img_2227 DEXTRE is shown holding the 3 old Ni-H2 batteries

On Jan 14, 2017, the 3 old Ni-H2 batteries held by DEXTRE were moved to the Exposed Pallet of the HTV-6.

NEXT: ISS departure

Download file:
axmeva39 US EVA-39 astronaut kit

Source: Spaceflight101.com

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