Patent ID: 8776527

Claim:
An apparatus, comprising: a gas turbine engine including a turbine and a discharge nozzle downstream of the turbine, the discharge nozzle including: a conduit defining a passage in fluid communication with the turbine and an outlet downstream of the turbine, the outlet being structured to discharge working fluid from the turbine; a centerbody positioned in the conduit along a first axis; several rings each circumscribing and offset from the centerbody and disposed between an outer flow wall of the conduit and the centerbody, the rings cooperating with the centerbody to reduce line of sight to the turbine through the nozzle, where line of sight is defined as a line disposed to a side of a centerline of the gas turbine engine and that extends from a location external of the discharge nozzle toward the turbine, and where said line does not cross the centerline of the gas turbine engine between the external location and the turbine; and one or more struts connected to the rings and one or more of the conduit and the centerbody, the struts being structured to position the rings in a nested relationship relative to one another between the turbine and the outlet; wherein a first portion of the passage extends a first distance perpendicular from the first axis, (b) a second portion of the passage upstream of the first portion extends a second distance perpendicular from the first axis, and (c) a third portion of the passage downstream of the first portion extends a third distance perpendicular from the first axis, the first distance being greater than the second distance and the third distance, and one or more of the several rings being within the first portion of the passage.