FLEXIBLE SUPPORT STRUCTURE FOR A GEARED ARCHITECTURE GAS TURBINE ENGINE

摘要

A gas turbine engine (20) includes a fan shaft (76) and a support (82) which supports the fan shaft (76) and defines at least one of a support transverse (Kframe BEND ) and a support lateral stiffness (Kframe). A gear system (60) drives the fan shaft (76). A flexible support (78) supports the gear system (60), and defines at least one of a flexible support transverse (KFS BEND ) and a flexible support lateral stiffness (KFS) with respect to at least one of the support transverse (Kframe BEND ) and the support lateral stiffness (KFS). An input (62) to the gear system (60) defines at least one of an input transverse (KIC BEND ) and an input lateral stiffness (KIC) with respect to at least one of the support transverse (Kframe BEND ) and the support lateral stiffness (KFS).