The prototype of a solar-powered plane destined for a record round-the-world journey has made its first trip across a runway.

On Nov 22, the plane covered at least 2km at speeds of up to five knots on the landing strip in Switzerland. This week saw the Solar Impulse plane outside its hangar for the first time, with tests of its engines and computer.

As wide as a jumbo jet but weighing just 1,500 kg, it will be piloted by Swiss adventurer Bertrand Piccard.

The plane's maiden flight is scheduled for February, and a final version will attempt to cross the Atlantic in 2012.