The Lowest Natural Frequency of an Axial Compressor Blade

Extract

Published Works discuss the calculation of the natural frequencies of uniform beam systems, but not simple calculations on beams of arbitrary cross section. This note describes a simple method evolved for estimating the lowest natural frequency of an axial compressor blade, and compares its results with measurements and with other calculations. The logical extension of the method to calculating the frequency of any mode of any cantilever of arbitrary cross section is made in the Appendix.