U.S. Spacewalk 77 Animation - September 9, 2021

This animation discusses the September 12th spacewalk in which ESA (European Space Agency) astronaut Thomas Pesquet and Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide will install a support bracket, called a modification kit, on the inward port side of the station’s backbone truss structure in a position known as P4, which is closest to the station’s pressurized living space. The kit prepares the site for future installation and deployment of the third of six new International Space Station Roll-Out Solar Arrays (iROSA) to upgrade one of the station’s eight power channels known as 4A, which provides partial power to the U.S. Laboratory, the Harmony module, and the Columbus module. The modification kit will be attached to the mast canister at the base of the original solar arrays. The crew will also replace a device that measures the electrical charging potential of the arrays and associated surfaces in its vicinity, called a floating point measurement unit, on a separate truss.