Solar Inpulse Airplane
 

This is pretty interesting. They will be attempting around the world flight in a manned solar aircraft. Pretty amazing feat.

Here's another link from popular mech.

Very cool.

Video:

http://www.youtube.com/watch?v=G2FMH8kgOao

Youtube Channel: http://www.youtube.com/user/SolarImpulseChannel

Very similar to a NASA project prototype named Helios - It was just a solar celled wing with multiple propeller pods. Designed for unmanned remote controlled flight, it was meant to circle over a fixed spot for weeks together, offering communication services similar to a comm. satellite, but without the costs and risks of the launch involved.

It was beautiful to see it flying! Too bad it fell down to the sea when testing sometime ago, but NASA has photographs on their site.

Don't see how they could possibly do it. 25,000 miles in 36 hours? That's 700 mph! The Voyager took a bit over 9 days for the trip...

Maybe they need to feather the props and score some thermals and updrafts and/or land a few times and recharge in the sun a bit and stretch your legs.

http://www.youtube.com/watch?v=qXljw...layer_embedded

Made the first flight the other day.

SOLAR IMPULSE - AROUND THE WORLD IN A SOLAR AIRPLANE

The wingspan on that thing is absolutely enormous. And the takeoff speed was rather low. I somehow doubt they will make a nonstop flight around the world in the thing.