GAS TURBINE ENGINE WITH LOW STAGE COUNT LOW PRESSURE TURBINE

摘要

A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a spool along an engine axis which drives a gear train, the spool including a low stage count low pressure turbine.

主权项

1. A gas turbine engine comprising:
a gear train positioned along an engine axis; a first turbine section configured for driving said gear train, said first turbine section including between three to six (3-6) stages; a second turbine section including at least two (2) stages; a fan including a plurality of fan blades rotatable about the engine axis and driven by at least one of the first turbine section and the second turbine section through the gear train; a core nacelle mounted about the engine axis; and a fan nacelle mounted about the core nacelle to define a bypass flow path,wherein a bypass ratio defined by the bypass flow path airflow divided by airflow through the core nacelle is greater than about six (6).