March 5, 2024

Cosmonauts Successfully Deploy Radiator During 5-Hour Spacewalk on ISS

By NASA
May 13, 2023

Spacewalkers Sergey Prokopyev and Dmitri Petelin work outside the Nauka science module to release a radiator and set up space spanners on the European robotic arm. Credit: NASA TV
Roscosmos cosmonauts Prokopyev and Petelin completed a 5-hour spacewalk to release a radiator on the ISSs Nauka module, marking the sixth spacewalk in 2023 and the 263rd for ISS upkeep.
Roscosmos cosmonauts Sergey Prokopyev and Dmitri Petelin concluded their spacewalk on May 12 at 5:01 p.m. EDT (2:01 p.m. PDT) after 5 hours and 14 minutes. They started their spacewalk to deploy a radiator on the International Space Stations Nauka science module at 11:47 a.m. EDT.
Prokopyev and Petelin completed their major objectives, which included deploying a radiator on the International Space Stations Nauka science module, connecting electrical, mechanical, and hydraulic lines, and filling a set of cooling loops with coolant.

Roscosmos spacewalkers Sergey Prokopyev and Dmitri Petelin work outside the International Space Stations Roscosmos section. Credit: NASA
Prokopyev was using an Orlan spacesuit with red stripes, while Petelin was using a fit with blue stripes. This was the 6th spacewalk in Prokopyevs career, and the fourth for Petelin. It was the 6th spacewalk at the station in 2023 and the 263rd spacewalk for spaceport station assembly, upkeep, and upgrades.