| 摘要 |
<p>The present invention is directed to gas turbine engines in which distinct components are integrally cast so as to increase resistance to thermal stress and thus decrease the amount of cooling airflow required to maintain the structural integrity of the components. The inner duct wall (34) of a reverse airflow duct is integrally cast with a circumferentially extending shroud (42) surrounding the stator vanes (38) forming the turbine nozzle. The integral casting permits the inner duct wall (34) to withstand greater degrees of thermal stress and thus require less cooling (47).</p> |
