Turbine cooled cooling air by tubular arrangement

A method comprising:

• providing a first opening in an inner wall of a combustor of a gas turbine engine, and a second opening in an outer wall of the combustor, the outer wall and the inner wall defining a combustion chamber there between;
• fluidly connecting the conduit in the combustion chamber to the first opening in the inner wall via a first joint and to the second opening in the outer wall via a second joint;
• flowing a cooling fluid through the conduit from the second opening to the first opening;
• wherein the first joint and the second joint enable multiple degrees of freedom of the conduit within the combustion chamber;
• and
• wherein the first joint is a floating joint, and the second joint is one of a floating joint and a gimbal joint.

A gas turbine engine comprising:

• a combustor having an inner wall and an outer wall defining a combustion chamber there between, the inner wall and the outer wall each having at least one opening into the combustion chamber;
• at least one mobile conduit, the at least one mobile conduit passing through the combustion chamber from the at least one opening in the outer wall to the at least one opening in the inner wall, a cooling fluid being flowable from the at least one opening in the outer wall through the at least one mobile conduit to the at least one opening in the inner wall during operation of the gas turbine engine;
• a first joint fluidly connecting the at least one mobile conduit to the first opening;
• and
• a second joint fluidly connecting the at least one mobile conduit to the second opening;
• wherein the first joint is a floating joint, and the second joint is one of a floating joint and a gimbal joint attached to an end of the at least one mobile conduit near the outer wall, a floating joints enabling multiple angular degrees of freedom and a translational degree of freedom of a respective end of the at least one mobile conduit, and a gimbal joint enabling multiple angular degrees of freedom with no translational degree of freedom of a respective end of the at least one mobile conduit.