Patent attributes
A mounting link between a gas turbine engine and a gearbox comprises a gearbox arm, a fusibly breakable bolt, and two engine attachment brackets. The gearbox arm attaches to the gearbox, and extends along an axis defining a first dimension between the gas turbine engine structure and the gearbox. The fusibly breakable bolt extends through the gearbox arm, and has a central shear section that mates with the gearbox arm. The engine attachment brackets have primary and secondary retention annuli, and attachment flanges that attach to the gas turbine engine structure. The primary retention annuli are each concentric to an outer section of the fusibly breakable bolt, and have a radius selected to tightly retain those outer sections in the first dimension. The secondary retention annuli are each concentric to a portion of the shear section, and have a larger radius to loosely retain the shear section.
