| 摘要 |
The invention provides a deflector for redirecting cooling air leakage to improve the effi-ciency of a gas turbine engine. A conventional gas turbine engine includes a forward stator assem-bly and a rotor assembly with an air cooled rotor disc, and a cir-cumferential array of blade re-tention slots. An array of air cooled rotor blades with blade bases are retained in each slot. The rotor blades are disposed equidistantly about the circum-ference of the rotor disc with a radially extending gap between each adjacent rotor blade. It is the significant detrimental ef-fect of cooling air leakage into these gaps, which is the focus of this invention. The invention relates to providing a deflector, disposed circumferentially on a forward face of the coverplate, for deflecting cooling air leak-age, flowing from the running seal through the cooling air leak-age path, away from the gaps be-tween the blades, onto the out-ward surface of the blade platform, and into the gaspath at an acute ang le relative to rearwardly axial flow therein.
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