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An astronaut on a previous spacewalk. NASA Goddard Space Flight Center via Flickr/Creative Commmons
repairs

Computer failure on International Space Station may require spacewalk to fix

However, the six-man crew is not currently in danger, officials have said.

A COMPUTER OUTAGE at the International Space Station may require a spacewalk by astronauts and threatens to delay next week’s launch of a commercial supply ship for NASA.

NASA said last night that a backup computer on the outside of the orbiting lab is not responding to commands.

The main computer, called an MDM or multiplexer-demultiplexer, is working fine, and the six-man crew is in no danger, officials said.

However, these computers control some robotic functions that would be needed for the upcoming supply run by SpaceX, one of two U.S. companies contracted by NASA to keep the space station well stocked.

Backup

A backup computer would need to be operating for redundancy of those robotic systems.

SpaceX is supposed to launch the unmanned Dragon capsule on Monday from Cape Canaveral. It contains nearly 5,000 pounds of supplies and science experiments.

The mission is already a month late because of extra prep time needed by the California company and unrelated damage to an Air Force radar-tracking device needed for rocket launches.

Repaired or replaced

Late Friday, Mission Control was trying to determine whether the computer can be repaired or must be replaced. A replacement would have to be accomplished by spacewalking astronauts.

NASA is still aiming for a Monday launch by SpaceX. But that could change, depending on the status of the bad computer.

Astronauts use the space station’s big robot arm to grab onto the Dragon capsule and attach it to the outpost.

The space station is currently home to two Americans, one Japanese and three Russians.

NASA is paying Space Exploration Technologies Corp. — or SpaceX — and the Virginia-based Orbital Sciences Corp. to make space station deliveries. Russia, Japan and Europe also conduct occasional supply runs.

Watch: This is what it looks like to be blasted into space on the side of a rocket >

Read: Astronauts’ hearts grow rounder in space, finds study >

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Author
Associated Foreign Press
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