Turbomachine Blade

摘要

A turbomachine airfoil element has an airfoil. The airfoil has an inboard end, an outboard end, a leading edge, a trailing edge, a pressure side, and a suction side. A span between the inboard and an outboard end is 1.4-1.6 inch. A chord length at 50% span is 0.9-1.4 inch. At least three of the following resonance frequencies are present. A first mode resonance frequency is 2591.5±10% Hz. A second mode resonance frequency is 4675.2±10% Hz. A third mode resonance frequency is 7892.9±10% Hz. A fourth mode resonance frequency is 10098.2±10% Hz. A fifth mode resonance frequency is 14808.2±10% Hz.

主权项

1. A turbomachine airfoil element comprising:
an airfoil having: an inboard end; an outboard end; a leading edge; a trailing edge; a pressure side; and a suction side,wherein:
a span between the inboard end and the outboard end is 1.4-1.6 inch (36-41 mm); a chord length at 50% span is 0.9-1.4 inch (23-36 mm); and at least three of:
a first mode resonance frequency is 2591.5±10% Hz;a second mode resonance frequency is 4675.2±10% Hz;a third mode resonance frequency is 7892.9±10% Hz;a fourth mode resonance frequency is 10098.2±10% Hz; anda fifth mode resonance frequency is 14808.2±10% Hz.