Feeds

Enormous orbiting solar raygun power plants touted

Trusty scientifiction staple gets another outing

Next gen security for virtualised datacentres

Many years ago, in Galaxy magazine, Jerry Pournelle devoted his A Step Farther Out column to describing how satellites could be used to harvest solar energy on a scale impossible underneath Earth’s atmosphere.

The idea never really went away, but it’s been mostly out of the spotlight. Now, Reuters is reporting a study by the International Academy of Astronautics (IAA) which touts orbital power as being technically feasible.

NASA’s former head of concepts John Mankins (now head of Artemis Innovation Management Solutions of California) is quoted as saying “solar power derived from space could play a tremendously important role in meeting the global need for energy during the 21st century” (“could” simultaneously meaning “if someone finds the money”, “if the engineering is as feasible as we think it is”, “if we don’t have a disaster that fries someone Earth-side”, and “if some whacko protest movement doesn’t run up a handy conspiracy theory to bring an end to the whole idea” - El Reg).

Certainly the engineering challenges would be formidable: power would be transferred from satellites to Earth as very high-powered microwave signals to be captured by a network of large antennas.

The satellites, at around 1km across, would be too large to be launched in one shot, so they would need to be assembled in space (the IAA report recommends using low-cost reusable launchers in the long term, with part of the budget for this idea to be spent on spaceship development). And as has been clear ever since Pournelle discussed the idea, control over the satellites and the power-carrying beam would need to be very precise.

Mankins told Reuters a moderate scale demonstration could be accomplished “for tens of billions of dollars less than previously projected”.

The advantages are that in addition to getting much more sunlight than is available under the atmosphere, the “solar satellites” could – space junk permitting – be positioned to operate 24 hours a day.

The 248-page study took two years to complete. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
Our LOHAN spaceplane ballocket Kickstarter climbs through £8000
Through 25 per cent but more is needed: Get your UNIQUE rewards!
LOHAN tunes into ultra long range radio
And verily, Vultures shall speak status unto distant receivers
NASA to reformat Opportunity rover's memory from 125 million miles away
Interplanetary admins will back up data and get to work
SpaceX prototype rocket EXPLODES over Texas. 'Tricky' biz, says Elon Musk
No injuries or near injuries. Flight stayed in designated area
EOS, Lockheed to track space junk from Oz
WA facility gets laser-eyes out of the fog
Volcanic eruption in Iceland triggers CODE RED aviation warning
Lava-spitting Bárðarbunga prompts action from Met Office
LOHAN Kickstarter breaks NINETEEN THOUSAND of your EARTH POUNDS
That's right, OVER 9,000 beer tokens - and counting
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.