Abstract: A sealing system for a fuel injector is provided. The fuel injector includes a body defining a plurality of fuel passages. Each of the plurality of fuel passages is defined by a first portion of the body and a second portion of the body. The sealing system includes a sealing structure adapted to be disposed between the first portion and the second portion. The sealing structure extends circumferentially around a central axis of the fuel injector. The sealing structure includes a ring and a plurality of lobes. Each lobe from the plurality of lobes is adapted to accommodate and seal a corresponding fuel passage from the plurality of fuel passages. The sealing system also includes a plurality of mechanical fasteners adapted to couple the first portion with the second portion, and to apply a pressure on the sealing structure to seal the plurality of fuel passages.

Abstract: This disclosure provides an air tube for a combustor of a gas turbine engine. The air tube includes an inner tube and an outer tube to deliver discharged compressor air into a combustion chamber of the combustor. The air tube can include struts and fins that can improve the cooling performance of the air tube during operation of the gas turbine engine.

Abstract: This disclosure provides an air tube for a combustor of a gas turbine engine. The air tube includes an inner tube and an outer tube to deliver discharged compressor air into a combustion chamber of the combustor. The air tube can include struts and fins that can improve the cooling performance of the air tube during operation of the gas turbine engine.