Rotor hub for rotary wing aircraft

A rotor hub configured to support and rotate a plurality of rotor blades about an axis of rotation which rotates in a horizontal plane, the rotor hub comprising:

• a cylindrical body having a central shaft hole connecting an upper surface of the body and a lower surface of the body, the central shaft hole having a radius extending from the axis in a radial direction and a plurality of splines formed on an interior surface thereof;
• seven radial spokes, each radial spoke extending from the cylindrical body adjacent the central shaft hole in a substantially identical spoke direction, the seven radial spokes being spaced equidistantly about a periphery of the central shaft hole, wherein each radial spoke extends at a first angle in a vertical plane of the rotor hub such that a line defined by each radial spoke does not intersect the axis of rotation, and each radial spoke extends at a second angle in a horizontal plane, perpendicular to the vertical plane of the rotor hub, the second angle being arranged in a direction opposite the direction of rotation of the rotor hub about the axis of rotation;
• and
• seven substantially identical arcuate segments, each arcuate segment being mounted to a distal end of two adjacent radial spokes to define a hub aperture there between and including an opening into which a corresponding yoke is insertable to connect the hub to the blade, each arcuate segment being generally curved such that a radius of the rotor hub is non-uniform about a circumference thereof.