Feeds

BAFFLING power cockup halts NASA's nuclear Mars tank Curiosity

Rover's voltage wobbles, probe launches probe

Beginner's guide to SSL certificates

NASA has halted its rover Curiosity on Mars for a few days while engineers on Earth attempt to figure out what caused an electrical fault in the robot.

Curiosity self-portrait at Rocknest in the Gale Crater

Space selfie ... Curiosity in the Gale Crater on Mars (Credit: NASA)

The space agency was quick to reassure everyone that their favorite nuclear-powered truck was still safe and stable, and even fully capable of operation. But engineers, who were alerted to the fault on November 17, still want a crack at figuring out what went wrong.

"We are taking the precaution of investigating what may be a soft short," said Jim Erickson, Mars Science Laboratory project manager, referring to a type of electrical fault caused by something that's partially or temporarily conductive, rather than a hard short such as one wire touching another and conducting electricity.

According to NASA, Curiosity's team detected a change in the voltage difference between the chassis and the 32-volt bus that distributes power to systems in the rover. The level has been holding steady at about eleven volts since landing day, but had fallen to four volts.

This isn't the first time the rover has had a soft short - it already went through one on landing day. That one was related to explosive-release devices used for deployments before and after it touched down, and it lowered the voltage from about 16 volts to 11.

The engineers are hoping to spend the next few days trying to find possible root causes for the voltage change. So far, they know that the electricity flickered a few times in the hours before the drop and that the issue didn't cause the rover to enter safe-mode. ®

Internet Security Threat Report 2014

More from The Register

next story
GRAV WAVE DRAMA: 'Big Bang echo' may have been grit on the scanner – boffins
Exit Planet Dust on faster-than-light expansion of universe
SpaceX Dragon cargo truck flies 3D printer to ISS: Clawdown in 3, 2...
Craft berths at space station with supplies, experiments, toys
That glass of water you just drank? It was OLDER than the SUN
One MEELLION years older. Some of it anyway
Big dinosaur wowed females with its ENORMOUS HOOTER
That's right, Doris, I've got biggest snout in the prehistoric world
Japanese volcano eruption reportedly leaves 31 people presumed dead
Hopes fade of finding survivors on Mount Ontake
Relive the death of Earth over and over again in Extinction Game
Apocalypse now, and tomorrow, and the next day, and the day after that ...
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.