Diy Drone :
A giant seven-foot wide plane called Eturnas D (shown) was also unveiled, which partially uses solar power to remain in the air for six hours, reaching speeds of 27mph (43km/h)
A giant seven-foot wide plane called Eturnas D (shown) was also unveiled, which partially uses solar power to remain in the air for six hours, reaching speeds of 27mph (43km/h)
