Fan blade for turbine engine of airplane, has two vents exclusively transporting less percentages of air, which enters into turbine engine along main axis and runs along blade during normal operation, from inlet orifices to outlet orifices

摘要

The blade (10) has a convex face (17) that is a low pressure face or wing upper surface in normal operation of a turbine engine. The face is radially extended from a foot (12) to a head (14) and axially extended from a leading edge (15) to a trailing edge (16). Two vents exclusively transport less percentages of air, which enters into the engine along a main axis of the engine and runs along the blade during normal operation, from inlet orifices (20) e.g. oblong holes, to outlet orifices (40) e.g. circular holes. The vents are opened at its ends by the inlet and outlet orifices, respectively.