| 摘要 |
A coolable seal assembly, such as the outer air seal 26, for a gas turbine engine 10 is disclosed. The seal assembly is formed of a plurality of arcuate seal segments 24 which extend circumferentially about an axis of the engine. The seal segments 24 are spaced apart leaving a clearance gap G therebetween. An orifice plate, such as the orifice plate 94, is disposed in the gap. The orifice plate has an opening, such as the orifice 106, for ducting cooling fluid into the gap G. In one embodiment, the orifice plate is integral with one of the arcuate seal segments and forms a shoulder 128 on the seal segment. Flow through the orifice plate is variably restricted by a device, such as the adjacent seal segment 24b, so that the restriction is responsive to the size of the gap G under certain operative conditions of the engine. |
