NASA Switches Curiosity To Backup Computer | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-05.13.24

Airborne-NextGen-05.07.24

Airborne-Unlimited-05.08.24 Airborne-FlightTraining-05.09.24

Airborne-Unlimited-05.10.24

Tue, Mar 05, 2013

NASA Switches Curiosity To Backup Computer

Memory Issue Cropped Up In Primary System

The ground team for NASA's Mars rover Curiosity has switched the rover to a redundant onboard computer in response to a memory issue on the computer that had been active. The intentional swap at about 0230 PST February 28 put the rover, as anticipated, into a minimal-activity precautionary status called "safe mode." The team is shifting the rover from safe mode to operational status over the next few days and is troubleshooting the condition that affected operations. The condition is related to a glitch in flash memory linked to the other, now-inactive, computer.

"We switched computers to get to a standard state from which to begin restoring routine operations," said Richard Cook of NASA's Jet Propulsion Laboratory, project manager for the Mars Science Laboratory Project, which built and operates Curiosity.

Like many spacecraft, Curiosity carries a pair of redundant main computers in order to have a backup available if one fails. Each of the computers, A-side and B-side, also has other redundant subsystems linked to just that computer. Curiosity is now operating on its B-side, as it did during part of the flight from Earth to Mars. It operated on its A-side from before the August 2012 landing through Wednesday. "While we are resuming operations on the B-side, we are also working to determine the best way to restore the A-side as a viable backup," said JPL engineer Magdy Bareh, leader of the mission's anomaly resolution team.
 
The spacecraft remained in communications at all scheduled communication windows on Wednesday, but it did not send recorded data, only current status information. The status information revealed that the computer had not switched to the usual daily "sleep" mode when planned. Diagnostic work in a testing simulation at JPL indicates the situation involved corrupted memory at an A-side memory location used for addressing memory files.
 
Scientific investigations by the rover were suspended while the switch was being made. Resumption of science investigations is anticipated within several days. This week, laboratory instruments inside the rover have been analyzing portions of the first sample of rock powder ever collected from the interior of a rock on Mars.

(Curiosity image provided by NASA)

FMI: www.nasa.gov

Advertisement

More News

Sierra Space Repositions Dream Chaser for First Mission

With Testing Soon Complete, Launch Preparations Begin in Earnest Sierra Space's Dream Chaser has been put through the wringer at NASA's Glenn Armstrong Test Facility in Ohio, but w>[...]

ANN's Daily Aero-Term (05.10.24): Takeoff Roll

Takeoff Roll The process whereby an aircraft is aligned with the runway centerline and the aircraft is moving with the intent to take off. For helicopters, this pertains to the act>[...]

Aero-News: Quote of the Day (05.10.24)

“We’re proud of the hard work that went into receiving this validation, and it will be a welcome relief to our customers in the European Union. We couldn’t be mor>[...]

Aero-News: Quote of the Day (05.11.24)

"Aircraft Spruce is pleased to announce the acquisition of the parts distribution operations of Wag-Aero. Wag-Aero was founded in the 1960’s by Dick and Bobbie Wagner in the >[...]

ANN's Daily Aero-Term (05.11.24): IDENT Feature

IDENT Feature The special feature in the Air Traffic Control Radar Beacon System (ATCRBS) equipment. It is used to immediately distinguish one displayed beacon target from other be>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2024 Web Development & Design by Pauli Systems, LC