Airfoils for wake desensitization and method for fabricating same

摘要

An airfoil and method of fabricating an airfoil including a first and a second side coupled at a leading and a trailing edge and extending there between. The airfoil includes a plurality of first chord sections having a first chord length and extending outward from one of the first side or second side at the leading edge and a plurality of second chord sections having a second chord length and extending outward from the one of the first side or the second side at the leading edge. The leading edge including spaced-apart wave-shaped projections defining a waveform. The configuration defining a three-dimensional crenulated airfoil configured to facilitate desensitization of an airfoil unsteady pressure response to at least one impinging upstream generated wake or vortex by decorrelating spatially and temporally and reducing in amplitude an unsteady pressure caused by interaction of the airfoil with the upstream generated wake or vortex.

主权项

1. An airfoil comprising:
a first side and a second side coupled together at a leading edge and a trailing edge, wherein the leading edge extends an entire length of the airfoil in a span-wise direction and the trailing edge is spaced chord-wise and downstream from the leading edge, the airfoil configured to facilitate desensitization of an airfoil unsteady pressure response to at least one impinging upstream generated wake or vortex by reducing in amplitude and decorrelating spatially and temporally an unsteady pressure caused by interaction of the airfoil with the at least one impinging upstream generated wake or vortex; and a plurality of first chord sections defining at least one first chord length and a plurality of second chord sections defining at least one second chord length, the plurality of first chord sections and second chord sections defining a waveform along a leading edge of the airfoil, at least one chord section of said plurality of first chord sections extending outward from one of the first side or the second side of the airfoil at the leading edge and extending only a partial width of the airfoil in a chord-wise direction and at least one chord section of said plurality of second chord sections extending outward from one of the first side or the second side of the airfoil at the leading edge and extending only a partial width of the airfoil in a chord-wise direction, said leading edge comprises: a plurality of spaced-apart wave-shaped projections each wave-shaped projection of said plurality of wave-shaped projections defines a wave tip and at least one trough portion defined between at least one pair of adjacent spaced-apart wave-shaped projections, wherein adjacent wave-shaped projections define a tip-to-tip distance therebetween, the tip-to-tip distance is within a range of values representative of a percentage of the at least one first chord length, wherein each of said wave-shaped projections include a radially inner edge and a radially outer edge that are angled such that they maintain the leading edge to the impinging upstream generated wake or vortex and wherein said wave-shaped projections are at least one of substantially evenly spaced and unevenly spaced, wherein the outwardly extending first and second chord sections and the plurality of spaced-apart wave-shaped projections defining a three-dimensional crenulated airfoil.