Patent ID: 10801364

Abstract:
An airfoil has pressure and suction sides spaced apart from one another in a thickness direction and joined to one another at leading and trailing edges. The airfoil extends in a radial direction a span that is in a range of 3.26-3.56 inch (82.9-90.5 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span and is in a range of 1.25-1.55 inch (31.8-39.4 mm). The airfoil element includes at least two of a first mode with a frequency of 323±10% Hz, a second mode with a frequency of 476±10% Hz, a third mode with a frequency of 1005±10% Hz, a fourth mode with a frequency of 2670±10% Hz, a fifth mode with a frequency of 3255±10% Hz and a sixth mode with a frequency of 7628±10% Hz.