Solar plane lands after completing 24-hour flight

Jul 08, 2010 By ELIANE ENGELER , Associated Press Writers
The experimental aircraft "Solar Impulse" takes off with pilot Andre Borschberg onboard from Payerne's Swiss airbase on Wednesday, July 7, 2010 on the first attempt to fly around the clock fueled by nothing but the energy of the sun. A Swiss team planning to eventually circle the globe in a solar-powered plane has started a 24-hour test flight that aims to keep the aircraft operating through the night on stored energy collected from the sun.(AP Photo/Keystone/Fabrice Coffrini/Pool)

An experimental solar-powered plane landed safely Thursday after completing its first 24-hour test flight, proving that the aircraft can collect enough energy from the sun during the day to stay aloft all night.

Pilot Andre Borschberg eased the aircraft onto the runway at Payerne airfield about 31 miles (50 kilometers) southwest of the Swiss capital Bern at exactly 9 a.m. (0700 GMT; 3 a.m. EDT) Thursday.

Helpers rushed to stabilize the pioneering plane as it touched down, ensuring that its massive 207-foot (63-meter) wingspan didn't touch the ground and topple the craft.

The record feat completes seven years of planning and brings the Swiss-led project one step closer to its ultimate aim of circling the globe using only energy from the sun.

The team says it has now shown the single-seat plane can theoretically stay in the air indefinitely, recharging its depleted batteries using 12,000 and nothing but the rays of the sun during the day.

Borschberg took off from Payerne airfield into the clear blue sky shortly before 7 a.m. Wednesday, allowing the plane to soak up plenty of sunshine and fly in gentle loops over the Jura mountains west of the Swiss Alps.

The 57-year-old former Swiss fighter dodged low-level turbulence and thermal winds, endured freezing conditions during the night and ended the with a picture-perfect landing to cheers and whoops from hundreds of supports on the ground.

After completing final tests on the plane, he embraced the project's co-founder Bertrand Piccard before gingerly unstrapping himself from the bathtub size cockpit he had spent more than 26 hours sitting in.

"When you took off it was another era," said Piccard, himself a record-breaking balloonist. "You land in a new era where people understand that with renewable energy you can do impossible things."

Although the goal is to show that emissions-free air travel is possible, the team said it doesn't see replacing conventional jet propulsion any time soon. Instead, the project is designed to test and promote new energy-efficient technologies.

Explore further: The mobility model is closely linked to the city's characteristics

More information: http://www.solarimpulse.com

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Birthmark
4.5 / 5 (2) Jul 08, 2010
I wonder if this will eventually come into commercial use...I'm glad it worked :)
SiBorg
not rated yet Jul 08, 2010
A terrific step towards the circumnavigation of the globe by a solar plane!
ralph_wiggum
not rated yet Jul 08, 2010
Congrats to the Solar Impulse team! Most impressive.
Eric_B
not rated yet Jul 08, 2010
they will be developing solar cruise missiles any day now
Eric_B
not rated yet Jul 08, 2010
just kidding...that is great! what an amazing piece of engineering!
zevkirsh
not rated yet Jul 09, 2010
average flying speed is 35 miles per hour. slower than a high power boat.

the helios flying wing was tested with measured success years ago by darpa as a high altitude perpetually loitering observation platform. it turns out this function can be better fullfilled by a massive flying blimp that has solar/wind power collection to help it loiter. at 80,000 feet it can provide surveillance and communications for a radius of 300 miles on the ground ( 300 miles distance from the point that is directly below it to other points on the ground.)

this solar impulse thing only gets up to 30,000 feet. making it comparatively useless , not to mention a sitting duck target.

SOOOOO...35mph means it's never going to be commercialized air transport and it's not a good communications platform, so your left with this being a niche sport light aircraft that will one day be affordable as the price of solar panels come down. still, that's AWESOME. because fuel is WAY expensive.

antialias_physorg
5 / 5 (1) Jul 11, 2010
this solar impulse thing only gets up to 30,000 feet. making it comparatively useless , not to mention a sitting duck target.

You might notice that this is not a military enterprise (it is only in the US where everything even remotely more complicated than a toothpick is military)

This is not some drone, like DARPA investigated, but something that will transport a human on solar power - eve throughout the night. Just think ahead how this might one day lead to commercial solar transport (airplane fuel being one of the worst polluters we have).

This is just a first step. Cars didn't go 200mph when they were invented. You have to start small and work your way up.