'American Ghost' unmanned aircraft

In just a few days, the unmanned aerial vehicle - possibly above 65,000 feet in four consecutive days - will make its first flight.

>>> The Luftwaffe launched a new spy plane

Called Phantom Eye , the Boeing-built jet is powered by hydrogen and is designed to carry out mission surveillance, reconnaissance, and altitude retention. Its waste, very special, will only be water.

According to Daily Mail, the flight 'open line' of the eye that will be conducted at Edwards Air Force Base in California and is expected to last from 4-8 hours.

In addition to Boeing, Boeing is also developing a larger, unmanned aerial vehicle that can stay in the air for up to 10 days. Next to it is the 'Phantom Ray,' a UAV designed to test all of the latest aircraft technologies.

"Ghost eyes can open up a whole new market for data collection and communication," Boeing representative said. 'The possibilities of ghost eyes can bring enormous changes in the field of military, civil and commercial.'

Drew Mallow, program director for Phantom Eye, says the hydrogen propulsion system is the key to the success of Ghost Eye. "It's very efficient and economically fuel-efficient, and it's very green because it just rinses out water."

According to Mallow, the ghost eye uses two 2.3-liter four-cylinder engines, each with 150 horsepower. It has a wingspan of 150 feet (37m), a maximum speed of 150 knots and can carry about 230kg.