Pusher aircraft power plant with swirl recovery vanes

A pusher aircraft power plant for propelling an aircraft, the pusher aircraft power plant comprising:

• a combustion engine operable to generate motive power, the combustion engine having a housing;
• a bladed rotor for propelling the aircraft, the bladed rotor being drivingly coupled to the combustion engine and disposed aft of the housing of the combustion engine relative to a direction of propulsion of the pusher aircraft power plant;
• and
• a circular array of swirl-recovery vanes coaxial with a rotation axis of the bladed rotor and non-rotatable about the rotation axis of the bladed rotor, the swirl-recovery vanes being disposed aft of the bladed rotor to interact with a flow of air exiting the bladed rotor during rotation of the bladed rotor,
• wherein:
• the combustion engine has an output shaft;
• the bladed rotor is mounted to a hollow rotor shaft rotatable about the rotation axis of the bladed rotor;
• the hollow rotor shaft is radially offset from the output shaft;
• and
• the swirl-recovery vanes are mounted to a non-rotatable vane shaft that extends through the hollow rotor shaft and that is fixedly secured at a location that is forward of the hollow rotor shaft.