Global area facility Commander Peggy Whitson and Flight Engineer Dan Tani finished a 7-hour, 4-minute spacewalk at 11:54 a.m. EST Saturday, continuing the outside outfitting associated with the Harmony node in its brand brand new place while watching U.S. laboratory Destiny.
Image at right: Credit: NASA television
The spacewalkers completed all tasks that are scheduled including another go through the starboard Solar Alpha Rotary Joint, and did some get-ahead act as well. The spacewalk otherwise had been comparable to usually the one on Nov. 20.
After making the airlock and starting equipment and tools, Whitson removed, vented and stowed an ammonia jumper, element of a short-term cooling loop. Getting rid of it permitted connection for the hookup of this permanent Loop B ammonia loop that is cooling a 2nd fluid tray regarding the place’s outside.
Tani meanwhile configured tools, then eliminated two fluid caps to organize for connection of the permanent cooling Loop B.
like in the Nov. 20 spacewalk, a lot of this outing ended up being dedicated to assist a fluid tray, this time around Harmony’s Loop B fluid tray. The 300-pound, 18.5-foot tray had been relocated from the short-term place in the S0 truss, in the center associated with the place’s primary truss, to Destiny, atop the port avionics tray.
Because they did utilizing the Loop The tray Nov. 20, they utilized a type of relay strategy, one going ahead and connecting tethers to prepare yourself to get the tray, then the other going further forward to make the next handoff.
After they reached the installation point they bolted along the tray, then installed its six fluid line connections. Cooling Loop B ended up being effectively restarted later on into the spacewalk. Whitson configured two Loop B heater cables.
Whitson relocated to the side that is starboard of. There she eliminated a thermal address of the centerline berthing digital digital camera system and eight launch restraints from latch petals of the typical berthing system. The digital digital camera and petals may help dock and initially attach the European area Agency laboratory Columbus, allowing bolts become driven to secure it to its permanent section home through the STS-122 mission of Atlantis month that is next.
Image at remaining: Spacewalker Dan Tani works in between your Harmony Node 2 and also the Destiny laboratory. Credit: NASA television
Tani relocated to the best region of the main truss and eliminated one of several 22 covers regarding the starboard Solar Alpha Rotary Joint (SARJ) and did an assessment like the one he did during their spacewalk through the STS-120 mission. He took electronic photos and examples of metallic shavings he found here. Some surfaces were described by him to be abraded.
Whitson meanwhile installed the very last remaining connection for the facility to Shuttle energy Transfer System. That get ahead task finished connections allowing shuttles Discovery and Endeavour to get place energy while docked at Pressurized Mating Adapter-2. She then joined up with Tani in the starboard SARJ, and offered more terms regarding the SARJ, which have been vibration that is showing increased energy usage.
Tani stowed and bagged the SARJ address away from airlock, making the joint readily available for a video clip study by way of a digital digital camera regarding the place’s robotic Canadarm2. That study is going to be done following the STS-122 objective and can include one or more complete rotation for the suspect joint, which includes skilled vibration and increased electric draw that is current.
Tani relocated an instrument case and relocated an articulated portable base discipline towards the forward end of Harmony as get-ahead tasks.
A crew equipment translation aid light she had removed during a previous spacewalk to clear the way for other activities as another Whitson reinstalled on Destiny.
Whitson and Tani did the cleanup that is standard and then joined the airlock. The start of its repressurization marked the formal end regarding the spacewalk.