Abstract: A method and device for modifying a gas turbine engine is disclosed herein. The method for modifying a gas turbine engine includes accessing a first outward end of a first tube installed in the gas turbine engine, the first tube having a tube axis. Then attaching an extraction tool to the first outward end of the first tube, and applying an axial force to the first tube using the extraction tool, the axial force relative to the tube axis, thus breaking a first interference seal between a first interface surface on a first inward end of the first tube and a receiving member of the gas turbine engine. The method continues with removing the first tube from the gas turbine engine.

Abstract: A self-sealing and self-centering tube made of metal, having a tube axis, and configured to form part of a secondary system in a gas turbine engine is disclosed herein. The self-sealing and self-centering tube includes a tube having a tube wall, an inward end, an outward end, a first seal section located towards the inward end, a second seal section towards the outward end, and an extension section located between the second seal section and the outward end.

Abstract: A bearing assembly having a cylindrical outer bearing shell. The outer bearing shell including a first annular outer land, a second annular outer land, and a recess therebetween. The outer bearing shell further including a first positioning bore having a first bore diameter and a second positioning bore having a second bore diameter. The second bore diameter may be smaller than the first bore diameter. A diameter of the first annular outer land may be larger than a diameter of the second annular outer land.

Abstract: A method and device for modifying a gas turbine engine is disclosed herein. The method for modifying a gas turbine engine includes accessing a first outward end of a first tube installed in the gas turbine engine, the first tube having a tube axis. Then attaching an extraction tool to the first outward end of the first tube, and applying an axial force to the first tube using the extraction tool, the axial force relative to the tube axis, thus breaking a first interference seal between a first interface surface on a first inward end of the first tube and a receiving member of the gas turbine engine. The method continues with removing the first tube from the gas turbine engine.

Abstract: A self-sealing and self-centering tube made of metal, having a tube axis, and configured to form part of a secondary system in a gas turbine engine is disclosed herein. The self-sealing and self-centering tube includes a tube having a tube wall, an inward end, an outward end, a first seal section located towards the inward end, a second seal section towards the outward end, and an extension section located between the second seal section and the outward end.

Abstract: A bearing assembly having a cylindrical outer bearing shell. The outer bearing shell including a first annular outer land, a second annular outer land, and a recess therebetween. The outer bearing shell further including a first positioning bore having a first bore diameter and a second positioning bore having a second bore diameter. The second bore diameter may be smaller than the first bore diameter. A diameter of the first annular outer land may be larger than a diameter of the second annular outer land.

Abstract: An inlet duct for an auxiliary power unit comprises an inlet end, and extends to an outlet end. At least one splitter is positioned within the duct and between the inlet and the outlet end to sub-divide an interior of the duct into plural flow paths.

Abstract: An inlet door and actuation mechanism for an auxiliary power unit has an actuation mechanism mounted within a housing. The housing includes a bearing mount for allowing a bearing on the mechanism to adjust angularly as the inlet door pivots. The bearing mount and bearing provides a fireproof enclosure between areas on opposed sides of a wall of the housing.

Abstract: An inlet duct for an auxiliary power unit comprises an inlet end, and extends to an outlet end. At least one splitter is positioned within the duct and between the inlet and the outlet end to sub-divide an interior of the duct into plural flow paths.

Abstract: An inlet door and actuation mechanism for an auxiliary power unit has an actuation mechanism mounted within a housing. The housing includes a bearing mount for allowing a bearing on the mechanism to adjust angularly as the inlet door pivots. The bearing mount and bearing provides a fireproof enclosure between areas on opposed sides of a wall of the housing.