| 摘要 |
<p>A cooling circuit 26 is disposed within a wall particularly within a gas turbine engine. The cooling circuit 26 includes a forward end 30, an aft end 40 and pedestals 42 wich extend between first and second portions 34, 36 of the wall. The characteristics and array of the pedestals 42 within the cooling circuit are chosen to provide a heat transfer cooling profile within the cooling circuit that substantially offsets the profile of the thermal load applied to the wall portion containing the cooling circuit 26. At least one inlet aperture 56 provides a cooling airflow path into the forward portion of the cooling circuit from a cavity 58. A plurality of exit apertures 60 provide a cooling airflow path out of the aft portion 40 of the cooling circuit and into the core gas path outside the wall. In one embodiment the flow area of the cooling circuit decreases from the inlet aperture 56 to the exit apertures 60. <IMAGE></p> |
