Electric propulsion vehicle powered by solar energy cells.

“NASA's Helios”

-It had 14 electric motors with their corresponding propellers, and it was a 1998 development of NASA's Dryden Flight Research Center.

“Battery of enines”

-On August 13, 2001, it took off shortly before nine in the morning and at about 4 in the afternoon it reached the altitude of 96,500 feet, a record for this machine.

-Then beginning the descent and landing at 1:43 am Hawaiian time on the island of Kauai.

-It can only operate in full sunlight.

-Later, in the same year would be lost in Pacific waters.

-The electric motors stick out of masts or booms, from the leading edge forward and are fixed at the end of the engines by means of flanges, as we see below.

"Motors without fairing"

-The propellers have a very effective shape because their rotation is not very high.