SOLAR POWERED AIRPLANE--NO FUEL

 

 

 

 

Solar-powered plane takes off for flight across U.S.

  SOLAR CELLS BUILT INTO WINGS

The aircraft runs on about the same power as a motor scooter, propelled by energy collected from 12,000 solar cells built into the wings that simultaneously recharge batteries with a storage capacity equivalent to a Tesla electric car.

In that way, the Solar Impulse can fly after dark on solar energy generated during daylight hours, and will become the first solar-powered aircraft capable of operating day and night without fuel to attempt a U.S. coast-to-coast flight.

But the plane, which from a distance resembles a giant floating insect in the sky, is unlikely to set any speed or altitude records. It can climb gradually to 28,000 feet and flies at an average pace of just 43 miles per hour (69 km per hour).

The current plane was designed for flights of up to 24 hours at a time, but the next model will have to allow for up to five days and five nights of flying by one pilot - a feat not yet accomplished.

 (Reuters) - "A solar-powered airplane that developers hope to eventually pilot around the world took off early on Friday from San Francisco Bay on the first leg of an attempt to fly across the United States with no fuel but the sun's energy.
The plane, dubbed the Solar Impulse, departed shortly after 6 a.m. local time from Moffett Field, a joint civil-military airport near the south end of San Francisco, heading first to Phoenix on a slow-speed flight expected to take 15 to 20 hours..."