Feeds

China confirms Jade Rabbit lunar rover has conked out

Bereft of life, it rests in peace

Intelligent flash storage arrays

The Yutu rover delivered in China's first moon-probe mission has popped its clogs and will become a permanent fixture of the lunar landscape.

"China's first lunar rover, Yutu, could not be restored to full function on Monday as expected, and netizens mourned it on Weibo, China's Twitter-like service," China News Service reports. "Yutu experienced mechanical problems on Jan 25 and has been unable to function since then."

The Yutu (or Jade Rabbit) six-wheeled rover rolled out onto the Moon on December 14 and took a brief look around the landing zone, pausing to send some pictures back to Earth. But the solar-powered rover had to be shut down for the first two weeks of January due to lack of sunlight.

As well as cameras, Yutu carries ground-penetrating radar capable of getting through 30m (98 feet) of the lunar surface, plus infrared and x-ray spectrometers on a robotic arm for measuring the chemical composition of the soil.

The rover restarted as planned, but Yutu failed to respond to commands when it came time to prepare for its next shutdown. The reported "mechanical control abnormality" now looks to have been terminal, although there's no word on the fate of the Chang'e-3 lander that delivered the Jade Rabbit to roam amongst the lunar regolith.

The Yutu lunar rover

It's a stiff

The early breakdown of the rover in what was supposed to be a three-month mission will cause some red faces down at the Beijing Aerospace Control Center, but China is learning what the former Soviet Union and the US discovered a long time ago – getting to the Moon isn’t hard, but hanging around is.

Landers on the Moon have to be engineered to survive extreme temperature differentials, from around 90°C to below -180°C between night and day. Although the rover gets some warmth from radioactive heaters, the hot and cold cycles cause components to get brittle and make electronics flaky.

There's also the problem of the fine lunar dust. The surface is covered with electrically charged particles that cling to objects and have proven highly abrasive. The dust gums up systems and causes friction damage to moving parts, as well as reducing the efficiency of solar panels.

The dust problem is the main reason that the Mars probe Curiosity dumped solar panels altogether in favor of a nuclear heart. That rover uses a basic nuclear power system to provide energy for getting around, but also to keep the rover warmish during nighttime periods. The reactor should outlast the rest of the rover's parts by years.

As lunar explorers go, it would be difficult to call Yutu a success in comparison to earlier attempts. The first robotic rover to hit the lunar surface, the Soviet's Lunokhod 1, spent nearly a year rolling across the landscape and sending back images to Earth, while its successor lasted four months before being disabled by a driving mishap.

The Americans didn’t bother with robotic lunar rovers, but instead left three battery-powered jeeps on the Moon that were carried by the last three Apollo missions. The Lunar Roving Vehicles carried astronauts over 43 miles of the lunar surface at a top speed of 8mph before being abandoned.

Yutu might not have lasted long, but the Chinese team can at least take comfort from the fact that the rover made it to the surface in one piece. That's good news if the country does decide to send a manned mission to our satellite at some point in the not-to-distant future. ®

Intelligent flash storage arrays

More from The Register

next story
MARS NEEDS WOMEN, claims NASA pseudo 'naut: They eat less
'Some might find this idea offensive' boffin admits
Boffins who stare at goats: I do believe they’re SHRINKING
Alpine chamois being squashed by global warming
LOHAN crash lands on CNN
Overflies Die Welt en route to lively US news vid
Comet Siding Spring revealed as flying molehill
Hiding from this space pimple isn't going to do humanity's reputation any good
Experts brand LOHAN's squeaky-clean box
Phytosanitary treatment renders Vulture 2 crate fit for export
No sail: NASA spikes Sunjammer
'Solar sail' demonstrator project binned
Carry On Cosmonaut: Willful Child is a poor taste Star Trek parody
Cringeworthy, crude and crass jokes abound in Steven Erikson’s sci-fi debut
prev story

Whitepapers

Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.