Aircraft with an unducted fan propulsor

An aircraft comprising:

• a fuselage;
• a pair of wings extending from the fuselage,
• two or more unducted fan propulsors, each of the unducted fan propulsors is mounted relative to one of the wings on a high pressure side thereof, the unducted fan propulsor having a centerline (CL), a plurality of blades arranged in a forward array and a plurality of blades arranged in a rearward array, wherein only one of the forward and rearward array of blades are rotating blades and the rotating blades define a maximum outer diameter (D);
• a point (P) located at an intersection of the CL and a line HP perpendicular to the CL that passes through an axial midpoint between a rearward trailing edge at a root of a blade of the rearward array and a forward leading edge at a root of a blade of the forward array when the forward leading edge and rearward trailing edge of the respective blades are aligned with each other;
• an airfoil section having an effective quarter chord point QC;
• a positioning line (R) having a length (RL) and extending from the QC to the point P of the unducted fan propulsor at an angle θ measured positive in a counter-clockwise direction when the high pressure side of the airfoil section is below the airfoil section when viewed looking from an outboard position towards an inboard position of the wing;
• wherein 0.07≤RL/D≤2.0 and θ is between 187° and 342°;
• a gearbox assembly coupling a low pressure turbine shaft output to a fan shaft of the propulsor;
• and
• a mounting member that couples the gearbox assembly to a fan frame.