Compound engine assembly with cantilevered compressor and turbine

A compound engine assembly comprising:

• an engine core including at least one internal combustion engine in driving engagement with an engine shaft;
• a compressor having an outlet in fluid communication with an inlet of the engine core, the compressor including at least one compressor rotor connected to a turbine shaft, the compressor contained in a compressor module casing;
• a turbine section having an inlet in fluid communication with an outlet of the engine core, the turbine section including at least one turbine rotor connected to the turbine shaft, the turbine section contained in a turbine module casing;
• wherein the turbine shaft is configured to compound power with the engine shaft;
• wherein the turbine shaft is rotationally supported by bearings, all of the bearings supporting the turbine shaft being located between the at least one compressor rotor and the at least one turbine rotor such that the at least one compressor rotor and the at least one turbine rotor are cantilevered;
• and
• wherein the compressor module casing and the turbine module casing are separate from one another, the turbine shaft being connected to the engine shaft through a gear train contained in a gearbox module casing, the compressor and turbine section being located outside of the gearbox module casing, all of the bearings supporting the turbine shaft being located outside of the compressor module casing and outside of the turbine module casing and being contained in the gearbox module casing, the compressor module casing and the turbine module casing defining an enclosure independently from each other.

A compound engine assembly comprising:

• an engine core including at least one internal combustion engine in driving engagement with an engine shaft;
• a compressor having an outlet in fluid communication with an inlet of the engine core, the compressor including at least one compressor rotor connected to a turbine shaft;
• a turbine section including a first stage turbine having an inlet in fluid communication with the outlet of the engine core and a second stage turbine having an inlet in fluid communication with an outlet of the first stage turbine, each of the first stage turbine and the second stage turbine including at least one rotor connected to the turbine shaft;
• wherein the turbine shaft is configured to compound power with the engine shaft;
• wherein the turbine shaft is rotationally supported by bearings, all of the bearings supporting the turbine shaft being located on a same side of the at least one rotor of the first stage turbine, all of the bearings supporting the turbine shaft being located on a same side of the at least one rotor of the second stage turbine, all of the bearings supporting the turbine shaft being located on a same side of the at least one rotor of the compressor;
• wherein the compressor and the turbine section are respectively provided in a compressor module casing and in a turbine module casing, the compressor module casing and the turbine module casing being separate from one another, the turbine shaft being connected to the engine shaft through a gear train contained in a gearbox module casing, the compressor and turbine section being located outside of the gearbox module casing, all of the bearings supporting the turbine shaft being located outside of the compressor module casing and outside of the turbine module casing and being contained in the gearbox module casing, the compressor module casing and the turbine module casing defining an enclosure independently from each other.