Spacewalking astronauts perform pump swap at space station - WLOX.com - The News for South Mississippi

Spacewalking astronauts perform pump swap at space station

By MARCIA DUNN
AP Aerospace Writer

CAPE CANAVERAL, Fla. (AP) - Spacewalking astronauts carried out a high-flying, high-tech version of musical chairs Wednesday, rearranging pumps outside the International Space Station.

Popping out early, NASA astronauts Drew Feustel and Ricky Arnold quickly swapped the positions of two spare ammonia pumps that are part of the space station's critical cooling system.

One pump got too cold because of a power shutdown 17 years ago and is called Frosty; flight controllers plan to test it in the coming days to see if it still works. The other, a failed unit dubbed Leaky, spewed out ammonia five years ago.

Frosty took Leaky's spot on a robot-arm mechanism, while Leaky was moved to a long-term storage platform.

Ammonia coolant is toxic, and Mission Control repeatedly warned the spacewalkers to be careful of any leaks.

A brand new spare pump arrived at the space station last month. This fresh pump is named Motley since it's comprised of a variety of spare parts.

"We've been doing a ton of work to play musical chairs with all these (pumps) so we can have good available spares," flight controller Alex Apyan said from Houston during the spacewalk.

Each 235-pound pump, the size of a flat box, is about 3 feet by 2.5 feet by 1.5 foot.

Feustel and Arnold also installed a new camera and communication device, and even accomplished some extra chores.

"Nice work," Mission Control said as the 6 1/2-hour spacewalk came to a close. "All right, guys, we are ready for you all to start heading home."

The spacewalkers laughed and shared jokes as they floated back inside. "Anyone home? Trick or treat!" one of them jokingly called out.

Meanwhile, the station's six-man crew is expecting a delivery. Orbital ATK plans to launch a supply ship Sunday from Wallops Island, Virginia. Weather permitting, the pre-dawn flight of the Antares rocket should be visible along the East Coast from New England to South Carolina.

Feustel and Arnold went spacewalking at the end of March, shortly after arriving at the 250-mile-high lab. They have another spacewalk lined up for next month.

___

The Associated Press Health & Science Department receives support  from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content.

Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

  • NationalMore>>

  • No rain in sight: Fire fears force land closures in Arizona

    No rain in sight: Fire fears force land closures in Arizona

    Saturday, May 26 2018 1:33 AM EDT2018-05-26 05:33:23 GMT
    Saturday, May 26 2018 10:04 AM EDT2018-05-26 14:04:44 GMT
    (AP Photo/Felicia Fonseca). In a Thursday, May 24, 2018, photo, a sign posted at a trail leading into the national forest in Flagstaff, Ariz., tells the public no one is allowed in. Multiple areas of national forests around Arizona are closed because o...(AP Photo/Felicia Fonseca). In a Thursday, May 24, 2018, photo, a sign posted at a trail leading into the national forest in Flagstaff, Ariz., tells the public no one is allowed in. Multiple areas of national forests around Arizona are closed because o...
    Fears of massive wildfires force closures on federal and state land in Arizona.More >>
    Fears of massive wildfires force closures on federal and state land in Arizona.More >>
  • Subtropical Storm Alberto heads to the US Gulf

    Subtropical Storm Alberto heads to the US Gulf

    Saturday, May 26 2018 5:23 AM EDT2018-05-26 09:23:12 GMT
    Saturday, May 26 2018 10:04 AM EDT2018-05-26 14:04:22 GMT
    A gradual strengthening is expected through the weekend as Alberto moves north. (Source: NOAA/CIRA/RAMMB/CNN)A gradual strengthening is expected through the weekend as Alberto moves north. (Source: NOAA/CIRA/RAMMB/CNN)

    A storm moving slowly through the Caribbean Sea is threatening to bring heavy rainfall, mudslides, and flash floods to parts of Mexico, Cuba, Florida and the eastern U.S. Gulf Coast this weekend.

    More >>

    A storm moving slowly through the Caribbean Sea is threatening to bring heavy rainfall, mudslides, and flash floods to parts of Mexico, Cuba, Florida and the eastern U.S. Gulf Coast this weekend.

    More >>
  • More LGBT issues loom as justices near wedding cake decision

    More LGBT issues loom as justices near wedding cake decision

    Saturday, May 26 2018 9:33 AM EDT2018-05-26 13:33:35 GMT
    Saturday, May 26 2018 10:04 AM EDT2018-05-26 14:04:07 GMT
    (AP Photo/J. Scott Applewhite, File). FILE - In this Oct. 10, 2017, file photo, the Supreme Court in Washington is seen at sunset. A flood of lawsuits over LGBT rights is making its way through the courts and will continue, no matter the outcome in the...(AP Photo/J. Scott Applewhite, File). FILE - In this Oct. 10, 2017, file photo, the Supreme Court in Washington is seen at sunset. A flood of lawsuits over LGBT rights is making its way through the courts and will continue, no matter the outcome in the...
    A flood of lawsuits over LGBT rights is making its way through courts and that'll continue, no matter what the Supreme Court decides in the case of a baker who wouldn't create a wedding cake for a same-sex couple.More >>
    A flood of lawsuits over LGBT rights is making its way through courts and that'll continue, no matter what the Supreme Court decides in the case of a baker who wouldn't create a wedding cake for a same-sex couple.More >>
Powered by Frankly