THE FLYING OBJECT EQUIPPED COAXIAL DUCT SYSTEM

摘要

PURPOSE: A flying object using a coaxial duct system is provided to improve the impellent force of the flying object and to improve safety by protecting rotor blades. CONSTITUTION: A flying object(100) using a coaxial duct system comprises a main body(110), a lower motor(120), an upper rotor(130), lower rotor blades(121), upper roller blades(131), a lower duct(140), and an upper duct(150). The lower rotor is formed in a rotary shaft connected to the main body. The upper rotor is formed in the rotary shaft is installed on the top of the lower rotor. The lower rotor blades are connected to the lower rotor. The upper rotor blades are connected to the upper rotor. The lower duct covers the lower rotor blades. The upper duct covers the upper rotor blades.