Natural frequencies in coupled bending and torsion of twisted rotating and nonrotating blades : final report

Abstract

http://deepblue.lib.umich.edu/bitstream/2027.42/5695/5/bac5166.0001.001.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/5695/4/bac5166.0001.001.tx