Turbine engine assembly and method of manufacturing

A turbine engine assembly comprising:

• a low-pressure turbine assembly comprising:
• a first turbine section disposed within an outer casing and comprising a plurality of blades coupled to an inner rotor structure and configured to rotate in a first rotational direction at a first rotational speed;
• and
• a second turbine section disposed within the outer casing and comprising a plurality of blades coupled to the outer casing and configured to rotate in a second rotational direction at a second rotational speed, the second rotational direction opposite the first rotational direction and the second rotational speed lower than the first rotational speed, wherein the plurality of blades of the first turbine section are arranged in an alternating fashion with the plurality of blades of the second turbine section;
• a first drive shaft coupled to said first turbine section;
• a second drive shaft coupled to said second turbine section;
• and
• a fan assembly comprising:
• a first fan section coupled to said first drive shaft such that said first fan section is configured to rotate in the first rotational direction at the first rotational speed, said first fan section extending a first radial distance from a centerline of the turbine engine assembly to define a first forward fan face;
• and
• a second fan section coupled to said second drive shaft such that said second fan section is configured to rotate in the second rotational direction at the second rotational speed, said second fan section extending a second greater radial distance from the centerline to define a second forward fan face.

A method of manufacturing a turbine engine assembly, said method comprising:

• coupling a first low-pressure turbine section to a first drive shaft, the first low-pressure turbine section disposed within an outer casing and comprising a plurality of blades coupled to an inner rotor structure and configured to rotate in a first rotational direction at a first rotational speed;
• coupling the first drive shaft to a first fan section such that the first fan section is configured to rotate in the first rotational direction at the first rotational speed;
• and
• coupling a second fan section to a second low-pressure turbine section, the second low-pressure turbine section disposed within the outer casing and comprising a plurality of blades coupled to the outer casing and configured to rotate in a second rotational direction at a second rotational speed such that the second fan section rotates in the second rotational direction at the second rotational speed, the second rotational direction opposite the first rotational direction and the second rotational speed is lower than the first rotational speed, wherein the plurality of blades of the first turbine section are arranged in an alternating fashion with the plurality of blades of the second turbine section.