Two NASA astronauts performed the first of three spacewalks to start updating the power supply for the International Space Station (ISS), as reported first by Space.com

This image released 13 December by NASA shows US s
(Photo : AFP via Getty Images)
UNITY MODULE, IN SPACE: This image released 13 December by NASA shows US space shuttle Endeavour crew member Jim Newman of the US wraps up work 12 December on the outside of the Unity module of the International Space Station. The Endeavour and six-person crew separated from the station after seven days of work that included three space walks and joining the Unity and Zarya modules. AFP

Upgraded Solar Arrays

On Tuesday, Nov. 15, Josh Cassada and Frank Rubio, members of Expedition 68, collaborated to prepare the exterior of the space station for the installation of two upgraded solar arrays. 

The extravehicular activity (EVA) was the sixth one since June 2021 that was focused on the ISS Roll Out Solar Arrays, or iROSAs, which are enhancing the station's current solar panel wings. 

At 9:14 a.m. EST (14:14 GMT), Cassada and Rubio started their EVA, roughly an hour and fifteen minutes later than scheduled. Cassada detected an issue with the display on his spacesuit's control unit just as he was about to leave the station's Quest airlock, which prompted the extra time to diagnose and fix his spacesuit. 

The two spacewalkers divided up once they were outside to work on different tasks. Rubio began to work organizing cables for the iROSA, which will be mounted on an EVA later this month, while Cassada was busy preparing the deployment of a modification kit to support the arrays.

After finishing his work, Rubio joined Cassada near the end of the starboard truss of the space station to help with the main job of their spacewalk-the attachment of an iROSA mounting bracket for the 1A power channel, as per Space.com. 

Read Also: NASA Will Allow Spacewalks Outside the ISS Again After 7 Months

iROSA Installations

Two of the six anticipated iROSA installations have already been finished. Three of them had their mounting hardware already set up and only one of them needs to be completed.

The brand-new arrays can each produce 20 kilowatts of power. The new system will be able to boost the space station's electrical supply by 20 to 30% when combined with the current wings.

The iROSA was designed and constructed by Deployable Space Systems, which is now a division of Redwire, a provider of space infrastructure technology, and was prepared for flight by Boeing. 

The new solar arrays will ensure that the space station has sufficient power to support its future requirements, such as expanded commercial activities.  

It will also act as a test run for a crop of roll-out solar arrays that will be used at NASA's Artemis Gateway space station, which will be deployed in orbit around the moon.

At 3:25 EST (20:25 GMT), Cassada and Rubio ended their 7 hours, 11 minutes of spacewalking outside the space station. This marks their first time conducting an EVA. 

The spacewalk, which started the first of at least seven scheduled for Expedition 68, was the ninth of the year and the 254th since 1998 in support of assembling and maintaining the ISS, according to Space.com.

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Written by Jace Dela Cruz

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