Gas turbine engine rotor blade having a root section with composite and metallic portions

A gas turbine engine, comprising:

• a fan;
• a compressor section;
• a turbine section;
• and
• a rotor blade positioned within one of the fan, the compressor section, or the turbine section, the rotor blade comprising:
• an airfoil section;
• a root section extending along a longitudinal direction between an upstream surface of the root section and a downstream surface of the root section, the root section further extending along a radial direction between an inner surface positioned at an inner end of the root section and an outer end coupled to the airfoil section, the root section further extending along a circumferential direction between a first side surface and a second side surface, the root section defining a longitudinal centerline extending along the longitudinal direction and positioned equidistant from the inner surface and the outer end in the radial direction, the root section including a first portion formed from a composite material and a second portion formed from a metallic material;
• and
• a metallic cable partially positioned within the airfoil section and partially positioned within the root section, the metallic cable including an end coupled to the second portion of the root section,
• wherein the longitudinal centerline extends through the second portion of the root section.

A rotor blade for a gas turbine engine, the rotor blade comprising:

• an airfoil section;
• and
• a root section extending along a longitudinal direction between an upstream surface of the root section and a downstream surface of the root section, the root section further extending along a radial direction between an inner surface positioned at an inner end of the root section and an outer end coupled to the airfoil section, the root section further extending along a circumferential direction between a first side surface and a second side surface, the root section defining a longitudinal centerline extending along the longitudinal direction and positioned equidistant from the inner surface and the outer end in the radial direction, the root section including a first portion formed from a composite material and a second portion formed from a metallic material, the second portion of the root section forming a portion of at least one of the inner surface, the first side surface, or the second side surface,
• wherein the longitudinal centerline extends through the second portion of the root section.