Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 79
hanical vibrating system. What maximum speed do these turbines attain and in what timeis it obtained? After considering the problem we concludedthat it would be feasible to have the turbine close a properlydesigned contact once every revolution and thus a record of the 64 E. A. ECKIIARDT. [J.F.I.… … Camera with G.E. oscillograph. and the time were deduced. The results of one such record areshown in Fig. 17. It indicates that the turbine reached a speedof nearly 24.000 r.p.m. in less than four seconds. At this pointthe fire ceased and we have the logarithmic decay curve of therotating system…
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