Aircraft tilt apparatus including variable cooling air inlet

A tilt apparatus of an aircraft, comprising:

• a propeller;
• a motor assembly coupled to the propeller;
• a thermal transfer device configured to thermally couple to the motor assembly;
• a nacelle coupled to the motor assembly, the nacelle comprising a variable portion;
• a tilt actuator configured to tilt the nacelle, the motor assembly, and the propeller, with respect to a body of the aircraft between a lift configuration and a cruise configuration;
• a mechanical coupling configured to actuate the variable portion as a function of a tilt angle of the nacelle with respect to the body of the aircraft;
• wherein:
• the variable portion is configured to be actuated such that an opening size of an air inlet of the nacelle is larger in the lift configuration than in the cruise configuration;
• and
• the air inlet is configured to direct a portion of a propwash through the air inlet to the thermal transfer device when the propeller is operated in the lift configuration.