Rotorcraft and heat dissipation structure for motor

A heat dissipation structure for a motor, the motor comprising a body and a revolving shaft driven by the body, wherein the heat dissipation structure comprises:

• a casing being a hollow structure having a top opening and an air inlet in a bottom portion, wherein the casing is configured to receive the body, and an air channel is formed between a circumferential edge of the body and an inner wall of the casing;
• a head cover connected to the revolving shaft synchronously and covering the top opening, wherein the head cover is driven to rotate by the motor, a first gap communicating the air channel with an outside is defined by a lower surface of the head cover and a top end face of the casing, and the lower surface of the head cover is provided with a plurality of air flow picks;
• and
• a mounting stand fixed to an upper surface of the head cover, covering an axial end of the revolving shaft, and configured to be connected with a propeller.