A SPECIAL purpose hand operated computer for determining the natural frequencies of torsional systems has been described (Ref. 1).
Morton, A. (1968), "The Development of a Semi‐automatic Computer for Torsional Systems: A method of determining the natural frequencies of torsional oscillations in multi‐mass in‐line systems", Aircraft Engineering and Aerospace Technology, Vol. 40 No. 10, pp. 31-33. https://doi.org/10.1108/eb034430Download as .RIS
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