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US 12,006,876 B2Granted
Gas turbine engine front section
AssigneeRtx Corporation
InventorsFrederick M. Schwarz, William G. Sheridan
Life of this patent
Estimating the term…
Abstract
A turbofan engine includes a geared architecture for driving a fan about an axis. The geared architecture includes a sun gear rotatable about an axis, a plurality of planet gears driven by the sun gear and a ring gear circumscribing the plurality of planet gears. A carrier supports the plurality of planet gears. The geared architecture includes a power transfer parameter (PTP) defined as power transferred through the geared architecture divided by gear volume multiplied by a gear reduction ratio.
Claims19
A gas turbine engine comprising:
- a propulsor section;
- a compressor section including a compressor entrance passage including an inlet disposed at an inlet diameter and an outlet to the compressor disposed at an outlet diameter;
- a combustor receiving airflow from the compressor section and generating a high-energy flow;
- a turbine section driven by the high-energy flow;
- a geared architecture configured to be driven by the turbine section for driving the propulsor section at a speed different than the turbine section, wherein a geared architecture power transfer parameter (PTP) is defined as power transferred through the geared architecture divided by gear volume multiplied by a gear reduction ratio and is between 219 and 328.
2 more elements
A front section of a gas turbine engine comprising
- a propulsor section;
- a geared architecture driven by a turbine section for rotating the propulsor section about an axis, wherein the geared architecture comprises an epicyclic gear system including a ring gear circumscribing a plurality of planetary gears driven by a sun gear and a carrier supporting the planetary gears and a gear volume is defined within a space bounded by the ring gear and an outer periphery of the carrier and is between 526 in3 and 790 in3;
- and
- a compressor entrance passage disposed around the geared architecture including an inlet disposed at an inlet diameter and an outlet disposed at an outlet diameter, wherein a ratio of the inlet diameter to the outlet diameter is between 1.22 and 1.82.
1 more element
Dependencies are inferred from the claim text.