Patent ID: 7677045

Claim:
A transition duct comprising: an inlet ring; an aft frame; and a panel assembly extending therebetween and connecting the inlet ring to the aft frame, the panel assembly having an inlet end of generally circular cross section and a center and an outlet end of generally rectangular arc-like cross section, the panel assembly having an uncoated internal profile substantially in accordance with coordinates X, Y, and Z at an angle Θ, as set forth in Table 1, the X, Y, and Z values carried only to three decimal places wherein the coordinates are relative to an origin at the center of the inlet end and taken at a sweep angle Θ that is measured from a first plane defined by the inlet end and increases toward a second plane defined by the outlet end, the planes intersecting at a line about which the angle Θ is measured, and wherein X, Y, and Z are coordinates defining the panel assembly profile at each angle Θ from said inlet end, with X, Y, and Z having an origin at the center of the inlet end, and a z-axis extending perpendicular from the first plane.