Coaxial contra-rotating transmission configuration and aircraft

The invention discloses a coaxial contra-rotating transmission configuration and an aircraft, the coaxial contra-rotating transmission configuration comprises a first bevel gear, a second bevel gear, a third bevel gear, a first rotor shaft and a second rotor shaft, the first bevel gear and the second bevel gear are coaxially mounted, and the tooth surface of the first bevel gear and the tooth surface of the second bevel gear are opposite; the first rotor shaft is connected with the first bevel gear, the second rotor shaft is connected with the second bevel gear, and the second rotor shaft is sleeved with the first bevel gear; and the third bevel gear is respectively meshed with the first bevel gear and the second bevel gear. The tooth shapes of the first bevel gear, the second bevel gear and the third bevel gear are all bevel gears, the first bevel gear, the second bevel gear and the third bevel gear can be machined through the same cutter, the number of used cutters is reduced, and the machining cost is redu