| 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). 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). The metering portion (56) of each aperture (50) has a U-shaped bend (56C). The diffusing portion (58) of each aperture (50) is arranged at an angle (±1) to the second surface (43). 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). |
