In China, a huge drona was tested on solar cells CH-T4, capable of being in the air for months.
The device has a wingspan of 40 meters. The maximum takeoff weight of the UAV is about 400 kg.
The drone can fly at an altitude of up to 20 km with a top speed of 200 km / h. The device has 8 screws.
CH-T4 was built by experts of the Chinese Academy of Aerospace Aerodynamics. The twin-body is made using lightweight materials, such as carbon fiber.
The drone can be used for reconnaissance purposes and communication.