Feeds

'Eternal' sun-plane still aloft after 7 days, aiming for 14

Would be nice to see how it does at mid winter

Secure remote control for conventional and virtual desktops

A British-made solar powered aircraft has been airborne above a US military test range in Arizona for more than seven days continuously, it has been announced.

The Zephyr solar-powered UAV before trials in Arizona. Credit: Qinetiq

Make the most of it lads, your sons will be doing the next servicing.

The "Zephyr", made by controversial MoD boffinry selloff bonanza firm Qinetiq, is still in flight above the US Army Yuma Proving Ground as of publication, having taken off last Friday. At 168 hours as of just before 3pm UK time, this far outstrips the official world record for longest duration unmanned flight (30 hours 24 minutes, set by the RQ-4A Global Hawk in 2001).

In order to make the Zephyr's new record official, a representative of the Federation Aeronautique Internationale (FAI) is present at Yuma. The books will be amended once the aircraft is safely down: however Qinetiq intends to keep it airborne for another week if possible before that.

The Zephyr uses electricity from its solar cells to recharge its batteries during the daytime and runs off the stored power at night. It is intended to carry out surveillance and communications-relay tasks above the battlefield, where it would offer a long-endurance alternative to normal aircraft or satellites.

According to Qinetiq, the goal of the current flight is to show that Zephyr is the world's first "truly eternal plane", capable of staying up for months.

“The team has worked tirelessly over the past few years, making truly significant leaps forward in overall design and construction - and to see it successfully soar into the sky was fantastic,” gushes Jon Saltmarsh, Zephyr chief at Qinetiq. “By being able to remain over a location for weeks or months at a time, it can usefully deliver a host of practical and more affordable solutions to both civil and military customers.”

The new and upgraded Zephyr has been enlarged from previous versions and features a new power-management system and T-tail for reduced drag.

There's no doubt that the current flight is a significant achievement for Qinetiq. However, as with Zephyr's previous unofficially record-breaking flight one can't help noticing that the firm has chosen to make the attempt in uniquely favourable circumstances.

Yuma Proving Ground lies in the Sonoran Desert just 32 degrees north of the Equator, and the northern-hemisphere summer solstice is only just past. The sun is tracking as nearly dead overhead as it ever does over US territory just now, meaning that the Zephyr is getting far more energy from its cells than it would farther north or at other times of year.

One should note that in operational use the Zephyr will have to power a payload as well as itself - and for much of the year in many locations it will have to do this with less output from its cells than it is getting now.

If the sun-plane is generating a large surplus above what it needs to stay airborne, well and good: Qinetiq are offering no details at this point. If it isn't, though, its claim to be the first useful "eternal plane" will look rather unfounded. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
SCREW YOU, Russia! NASA lobs $6.8bn at Boeing AND SpaceX to run space station taxis
Musk charging nearly half as much as Boeing for crew trips
Boffins say they've got Lithium batteries the wrong way around
Surprises at the nano-scale mean our ideas about how they charge could be all wrong
Thought that last dinosaur was BIG? This one's bloody ENORMOUS
Weighed several adult elephants, contend boffins
Europe prepares to INVADE comet: Rosetta landing site chosen
No word yet on whether backup site is labelled 'K'
India's MOM Mars mission makes final course correction
Mangalyaan probe will feel the burn of orbital insertion on September 24th
Cracked it - Vulture 2 power podule fires servos for 4 HOURS
Pixhawk avionics juice issue sorted, onwards to Spaceport America
City hidden beneath England's Stonehenge had HUMAN ABATTOIR. And a pub
Boozed-up ancients drank beer before tearing corpses apart
'Duck face' selfie in SPAAAACE: Rosetta's snap with bird comet
Probe prepares to make first landing on fast-moving rock
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.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Security and trust: The backbone of doing business over the internet
Explores the current state of website security and the contributions Symantec is making to help organizations protect critical data and build trust with customers.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.