Patent ID: 8752389
Filing Date: 2014-06-17
Classification: F16L,F23D,F23R,Y10T

Abstract:
1. A method for assembling a fuel nozzle for use with a gas turbine engine, said method comprising: providing a first hollow tube oriented to channel air through a first flow channel, wherein the first hollow tube is fabricated from a first material that has a first coefficient of thermal expansion, said first hollow tube oriented substantially linearly; providing a second hollow tube oriented to channel fuel through a second flow channel, wherein the second flow channel is at a lower temperature than the first flow channel, and is fabricated from only a second material that has a second coefficient of thermal expansion that is different from the first coefficient of thermal expansion, said second hollow tube oriented substantially linearly; and coupling the second tube within the first flow channel of the first tube such that the first and second tube are oriented to channel fluids toward a combustion chamber, wherein the first tube substantially circumscribes the second tube, wherein the second tube thermally expands approximately at a same rate as the first tube during fuel nozzle operation.