'Rocket Man' Soars Over Alps With Jet Wings

But on this ride, even the slightest movement can cause problems. Rossy said he has to focus hard on relaxing in the air, because "if you put tension on your body, you start to swing around."

Should things go wrong -- and Rossy says they have more times than not -- there's always a yellow handle to jettison the wings and unfold the parachute.

"I've had many 'whoops' moments," he said. "My safety is altitude."

Rossy wears a heat-resistant suit similar to that worn by firefighters and racing drivers, to protect him from the heat of the turbines. The cooling effect of the wind and high altitude also prevent him from getting too hot.

Rossy says his form of human flight will remain the reserve of very few for now. The price and effort involved are simply too enormous, he says.

So far Rossy and his sponsors, including the Swiss watch company Hublot, have poured more than $285,000 and countless hours of labor into building the device. He would not estimate how much his device would cost should it ever be brought to market.

But, he believes similar jet-powered wings will one day be more widely available to experienced parachutists ready for the ultimate flying experience.

That is, if they don't mind missing out on the breathtaking panorama above the Swiss Alps.

"I am so concentrated, I don't really enjoy the view," Rossy said.

Related Links:

Eric Bland's blog: What the Tech?

Yves Rossy's Web page

How Stuff Works: How Flying Wings Will Work