Patent ID: 11859538
Assignee: RTX CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A turbine engine comprising:
a fan section including a plurality of fan blades supported on a hub;
a speed change system coupled to the hub with a gear ratio greater than 2.6;
a first compression section including a last blade trailing edge tip length that is greater than 67% of the radial length of a first stage leading edge of the first compression section;
an eight stage second compression section including a last blade with a trailing edge tip that includes a radial length that is greater than 57% of a radial length of the first stage leading edge of the second compression section;
a turbine section including a fan drive turbine section coupled to the speed change system and at least two turbine stages forward of a first turbine blade of the fan drive turbine section; and
a mid-turbine frame disposed within the turbine section for guiding core flow between turbine stages, the mid-turbine frame supporting a bearing system for one of the fan drive turbine and the at least two turbine stages.