Theoretical and experimental analysis of the reduction of rotor blade vibration in turbomachinery through the use of modified stator vane spacing

Richard H. Kemp, Marvin H. Hirschberg, William C. Morgan
naca-tn-4373
Sep 1958


A theoretical analysis was made of the dynamic gas forces produced by stationary nozzle vanes and which cause some of the resonant vibrations of the rotating blade of turbomachinery. It was shown that substantial reductions of the excitation level could be obtained by altering the circumferential positions of the vanes by amounts less than +10 percent of the normal spacing.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1958/naca-tn-4373.pdf