TURBOMACHINE BLADE, CORRESPONDING TURBOMACHINE AND METHOD OF MANUFACTURING A TURBINE BLADE
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United States of America Patent
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app pub date -
Dec 11, 2013
filing date -
Dec 13, 2012
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Abstract
A blade of a turbomachine comprises an airfoil portion; the airfoil portion extends longitudinally; the airfoil portion is defined laterally by an external surface; the airfoil portion has a 3D and twisted shape and has an internal cavity; the blade is in a single piece. Furthermore, the blade is designed for a rotor or stator array; the rotor or stator defines a radial direction and an axial direction; the external surface of the airfoil portion has a leading edge and a trailing edge; the leading edge and/or the trailing edge shifts backward or forward in the axial direction moving in the radial direction; the internal cavity extends along substantially the whole longitudinal length of the airfoil portion. Additive manufacturing is particularly effective and advantageous for such blade.
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