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Torsional vibration of aircraft engines (1932)
NASA Technical Reports Server (NTRS) · leaf 23
N.A.C.A. Technical Menoranduia No. 672 Pigs. 14,15 … 500 700 900 1100 1300 1500 1700 600 800 1000 1200 1400 1600 r.p.ia. 1.5 3 4.5 6 and 92 = vibration an^litudes at free end of cranlcshaft, corres- ponding to vibrations n^^ and n^^. mkg^ and nkgg = stresses in length- ening shaft, corresponding to vibrations n. and n^ . eg Pig. 14 Vibration and…NASA Technical Reports Server (NTRS)
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