Feeds

ISS set for Friday chill-out

First spacewalk to replace failed ammonia pump

Build a business case: developing custom apps

The first spacewalk to replace the International Space Station's failed ammonia pump module will take place on Friday, NASA has announced.

The ISS is in a "stable configuration" following Saturday's breakdown of the "Pump Module for loop A that feeds ammonia to maintain the proper cooling for systems and avionics".

Attempts to revive the pump were unsuccessful, although with half of the station's cooling system still operative, the situation is not critical.

Expedition 24 members Tracy Caldwell Dyson and Doug Wheelock are tasked with swapping out the failed unit, which sits on the orbiting outpost's S1 truss.

There's a spare pump bolted to an external stowage platform attached to the Quest airlock, which the two astronauts will use to exit and re-enter the ISS.

NASA explains: "In the first spacewalk, they will unbolt and remove the failed pump module, and install the spare. A second spacewalk to hook up a variety of electrical and fluid connections for the new pump module is targeted for Monday."

At Johnson Space Center’s Neutral Buoyancy Laboratory, astronauts Cady Coleman and Suni Williams lent their support to Caldwell Dyson and Wheelock by "practicing underwater the tasks needed to restore the cooling loop over the course of two spacewalks".

Friday's EVA marks the fourth spacewalk for Wheelock, while Caldwell Dyson will be on her first external jaunt. NASA has more on the preparations here. ®

Next gen security for virtualised datacentres

More from The Register

next story
Boffins attempt to prove the UNIVERSE IS JUST A HOLOGRAM
Is this the real life? Is this just fantasy?
China building SUPERSONIC SUBMARINE that travels in a BUBBLE
Shanghai to San Fran in two hours would be a trick, though
Our LOHAN spaceplane ballocket Kickstarter climbs through £8000
Through 25 per cent but more is needed: Get your UNIQUE rewards!
CRR-CRRRK, beep, beep: Mars space truck backs out of slippery sand trap
Curiosity finds new drilling target after course correction
SpaceX prototype rocket EXPLODES over Texas. 'Tricky' biz, says Elon Musk
No injuries or near injuries. Flight stayed in designated area
Galileo, Galileo! Galileo, Galileo! Galileo fit to go. Magnifico
I'm just a poor boy, nobody loves me. But at least I can find my way with ESA GPS by 2017
Astronomers scramble for obs on new comet
Amateur gets fifth confirmed discovery
prev story

Whitepapers

A new approach to endpoint data protection
What is the best way to ensure comprehensive visibility, management, and control of information on both company-owned and employee-owned devices?
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Maximize storage efficiency across the enterprise
The HP StoreOnce backup solution offers highly flexible, centrally managed, and highly efficient data protection for any enterprise.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.