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NASA Astronauts Complete Spacewalk for Solar Array Work

NASA astronauts Kayla Barron and Raja Chari concluded their spacewalk at 3:06 p.m. EDT after 6 hours and 54 minutes in preparation for upcoming solar array installation.

Barron and Chari completed their major objectives for today to prepare the space station for upcoming solar array upgrades by assembling and installing modification kits. The duo built a support bracket onto which a future ISS roll out solar array (iROSA) will be mounted. So far, two of six iROSAs have been deployed on station with four additional arrays to be delivered. The arrays will ultimately augment six of the station’s eight power channels, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts.

It was the 247th spacewalk in support of space station assembly, upgrades and maintenance, and was the first in Chari’s career and the second for Barron. Chari and Barron are in the midst of a planned six-month science mission living and working aboard the microgravity laboratory to advance scientific knowledge and demonstrate new technologies for future human and robotic exploration missions as part of NASA’s Moon and Mars exploration approach, including lunar missions through NASA’s Artemis program.

Astronaut roles for the next spacewalk on March 23 will be confirmed soon. NASA TV coverage for the March 23 spacewalk will begin at 7:30 a.m. for a spacewalk expected to begin around 8:50am.

For the Wednesday, March 23, spacewalk, designated U.S. EVA 80, two astronauts will install hoses on a Radiator Beam Valve Module that routes ammonia through the station’s heat-rejecting radiators to keep systems at the proper temperature. The crew members also will install a power and data cable on the Columbus module’s Bartolomeo science platform, replace an external camera on the station’s truss, and conduct other upgrades to station hardware.Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

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Heidi Lavelle

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NASA Astronauts Begin Spacewalk to Prep for Solar Array Replacements

Expedition 66 Flight Engineers Kayla Barron and Raja Chari of NASA began a spacewalk to assemble and install modification kits required for upcoming solar array upgrades on the International Space Station at 8:12 a.m. EDT.

Barron, designated extravehicular crew member 1 (EV1), is wearing a suit with red stripes. Chari, designated extravehicular crewmember 2 (EV 2), will wear a suit with no stripes. Coverage of the spacewalk continues on NASA Television, the NASA app, and the agency’s website.

Barron and Chari’s primary task will be to assemble and install modification kits required for upcoming solar array upgrades. The pair will install brackets and struts to support the future installation of an ISS Roll-Out Solar Array (iROSA).

Learn more about station activities by following @space_station and @ISS_Research on Twitter as well as the ISS Facebook and ISS Instagram accounts.

Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: http://jscfeatures.jsc.nasa.gov/videoupdate/

Get the latest from NASA delivered every week. Subscribe here: www.nasa.gov/subscribe

Get The Details…

Heidi Lavelle

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NASA TV is Live as Two Astronauts Prep for Station Spacewalk

NASA Television coverage of today’s spacewalk with NASA Flight Engineers Kayla Barron and Raja Chari now is underway and also is available on the NASA app, the Space Station blog and the agency’s website.

The crew members of Expedition 66 are preparing to exit the International Space Station‘s Quest airlock for a spacewalk expected to begin at approximately 8:05 a.m. EDT and last approximately 6.5 hours.

Barron and Chari will assemble and install modification kits required for upcoming solar array upgrades. The pair will install brackets and struts to support the future installation of an ISS Roll-Out Solar Array (iROSA). So far, two of six iROSAs have been deployed on station with four additional arrays to be delivered. The arrays will ultimately augment six of the station’s eight power channels, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts.

Barron will serve as extravehicular crewmember 1 (EV 1) and will wear a suit with red stripes. Chari will serve as extravehicular crewmember 2 (EV 2) and will wear a suit with no stripes. The spacewalk will be the second of Barron’s career and the first for Chari. Astronauts Tom Marshburn and Matthias Maurer will assist the spacewalkers in and out of their spacesuits and monitor their external activities.

Astronaut roles for the next spacewalk on March 23 will be confirmed soon.

Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: http://jscfeatures.jsc.nasa.gov/videoupdate/

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Heidi Lavelle

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Astronauts Go for Tuesday Spacewalk During CubeSat, Antigravity Suit Work

Two Expedition 66 astronauts are in final preparations today for Tuesday’s spacewalk after mission managers gave the final go early Monday. NASA TV will broadcast a live briefing today at 2 p.m. EDT with International Space Station managers discussing the upcoming spacewalk activities.

The U.S. Quest airlock has been configured to host NASA Flight Engineers Kayla Barron and Raja Chari when they set their U.S. spacesuits to battery power on Tuesday at 8:05 a.m. signifying the start of a six-and-a-half-hour spacewalk. The duo will exit Quest then translate over to the Starboard-4 truss structure and install modification kits that will ready the space station for its third roll-out solar array. NASA TV, on the app and the website, will begins its live spacewalk broadcast on Tuesday at 6:30 a.m.

Barron and Chari started Monday readying their spacesuits and staging their spacewalk tools inside Quest. They were joined afterward by Flight Engineers Tom Marshburn of NASA and Matthias Maurer of ESA (European Space Agency) for a final procedures review and a conference with specialists on the ground. Marshburn and Maurer will help the spacewalkers in and out of their suits and monitor and guide them during the exterior maintenance job.

NASA Flight Engineer Mark Vande Hei focused on another upcoming external job as he set up a small satellite deployer inside the Kibo laboratory module on Monday. He placed the deployer inside Kibo’s airlock where it will be grappled by the Japanese robotic arm, placed in the vacuum of outer space, and pointed away from the station. Soon a set of CubeSats will be released into Earth orbit for a variety of educational and scientific research activities.

The two cosmonauts in the station’s Russian segment, Commander Anton Shkaplerov and Flight Engineer Pyotr Dubrov, continued studying the effectiveness of an antigravity suit that may offset the effects of living in space. Known as the lower body negative pressure suit, it has the ability to draw fluids that pool toward a crew member’s head down to the legs and feet expanding veins and tissues. This may prevent space-caused head pressure and vision issues as well as easing a human’s return to Earth’s gravity.

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Mark Garcia

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