SUPPORT STRUCTURE FOR ATTACHING A GAS TURBINE ENGINE TO AN AIRCRAFT PYLON

A gas turbine engine (10) includes a support structure (43) for attaching the engine to an aircraft pylon (13) at front, mid and rear attachment positions thereof. The support structure includes a front mount (31) joined to the engine and configured to attach to the pylon at the front attachment position and a rear mount joined to a core casing (42) and configured to attach to the pylon at the rear attachment position, each of the front and rear mounts being configured to transfer lateral and vertical loads from the engine to the pylon, and the rear mount being spaced from the front mount such that yaw and pitch torques are also transferred from the engine to the pylon through the front and rear mounts. The support structure also includes an axial load transfer means (29) configured to transfer axial loads from the engine to the pylon and a roll-torque transfer formation (33) configured to transfer roll torque from the core casing to the pylon.