A COOLED COMPONENT FOR A GAS TURBINE ENGINE

摘要

A cooled gas turbine engine component comprises a wall (40) which has a plurality of effusion cooling apertures (50) extending there-through from a first surface (41) to a second surface (43). The apertures (50) are arranged at an angle (±1) to the second surface (43) and each aperture (50) has an inlet (52) in the first surface (41) and an outlet (54) in the second surface (43). Each aperture (50) has a metering portion (56) and a diffusing portion (58) arranged in flow series and each metering portion (56) is elongate and the width (W) is greater than the length (L1) of the metering portion (56). Each diffusing portion (58) increases in dimension in the length from the metering portion (56) to the outlet (54). Each outlet (54) has a rectangular shape in the second surface (43) of the wall (40). Each inlet (52) has an elongate shape in the first surface (41) of the wall (40) and the inlet (52) in the wall (40) is arranged substantially diagonally with respect to the outlet (54) in the wall (40).