Ducted fan and aircraft

A ducted fan comprising:

• a fan configured to rotate about an axial line to generate a flow of air;
• and
• a cowl having a cylindrical shape extending in an axial line direction and surrounding the fan about the axial line, and including an introduction port configured to introduce air from a first end portion side by rotation of the fan,
• the fan including
• a compressor blade provided on an outer circumferential side and
• a thrust blade provided on an inner circumferential side of the compressor blade,
• the cowl including
• a housing portion configured to accommodate the compressor blade in an interior thereof,
• an outlet configured to allow air flowing through the housing portion to be blown therethrough by the compressor blade, and
• an inlet configured to suck air blown out from the outlet,
• the outlet being provided inwards in a radial direction of the cowl and near the introduction port of the cowl, and
• the inlet being provided inwards in the radial direction of the cowl and between the outlet and the compressor blade in the axial line direction.