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Vortex Noise from Rotating Cylindrical Rods (1935)
NASA Technical Reports Server (NTRS) · leaf 15
I.A.C.A. Teohnioal lote Ho. 519 Fig Frequency, ko 0 .1 .3 .3 .4 .5 .6 .7 .8 .9 1.0 3.0 3.0 … r.p.a. - 3250 Figure 3.- Sound spectra from 34-inch rod at four rotational speeds. Vertical line indicates computed frequency for tip.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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