An object of the present invention is to provide a rotor blade which is excellent in lightweight, stiffness, fatigue characteristics, and dimensional accuracy, and especially excellent in fatigue characteristics, that is, durability, and a main object of the present invention is to provide a rotor blade including at least: a component [A] described below constituting a skin which is a surface layer of the rotor blade; and a component [B] described below constituting a core which is an interior of the skin, wherein the component [B] is enclosed in the component [A] at least in a cross-section taken at the center of the distance between a central axis at the time of rotation and a tip of the rotor blade: Component [A]: a continuous fiber base material including continuous reinforcing fibers and a matrix resin; Component [B]: a porous body including reinforcing fibers and a resin, the reinforcing fiber having a mass mean fiber length of 1 mm or more and 15 mm or less and forming voids by bonding through the resin.

An object of the present invention is to provide a rotor blade which is excellent in lightweight, stiffness, fatigue characteristics, and dimensional accuracy, and especially excellent in fatigue characteristics, that is, durability, and a main object of the present invention is to provide a rotor blade including at least: a component [A] described below constituting a skin which is a surface layer of the rotor blade; and a component [B] described below constituting a core which is an interior of the skin, wherein the component [B] is enclosed in the component [A] at least in a cross-section taken at the center of the distance between a central axis at the time of rotation and a tip of the rotor blade: Component [A]: a continuous fiber base material including continuous reinforcing fibers and a matrix resin; Component [B]: a porous body including reinforcing fibers and a resin, the reinforcing fiber having a mass mean fiber length of 1 mm or more and 15 mm or less and forming voids by bonding through the resin.

A propulsor fan array having reduced noise emission is disclosed. The propulsor fan array includes a plurality of propulsor fans that collectively generate thrust. Each of the propulsor fans include a blade fan having a plurality of blades. The plurality of blades are tensioned at tips of the plurality of blade fans such that a pitch of the blades during thrust generation is substantially the same as a pitch of the blades at rest. By tensioning the tips of the blades, an angle of the blades is maintained during operation of the propulsor fan thereby reducing noise that may result from changes in the angle of the blades.