Pigs. 15,15 chnical :.Iemorand-uia No. 683 equation (2) 600 400 200 400 min* 200 n 13 Measured flexural frequencies of models 6 and 7* measurement compared to cal- culatio:. according to (2). … \^ lU -H 15 VilDraticns of model 7 at n = 195 min"""^, faster torsional vilDrations are super- imposed on the slow fle:>rare.
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