The new great solar drone of China reaches 20,000 meters in altitude

China's first solar powered remote-controlled aircraft reached more than 20,000 meters altitude during its test flight in the northwestern regions of the country recently.

The drone was developed by the Chinese Academy of Aerospace Aerodynamics (CAAA), its developers kept the exact size of the drone as a secret, but it is estimated that it is about 14 meters long with a wingspan of 45 meters according to the previous prototypes.