Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 429
Fig. 44.5a.—De Laval Wheel andNozzles. Fig. 44.b. -Section of De LavalNozzle. the number of revolutions of the wheel. At a certain speed calledthe critical speed the vibrations reach a maximum beyond whichthe shaft takes up a new centre of rotation and the vibrations dis-appear, a phenomenon known…
Steam-engines
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