Protection of Steam Turbine Disk Wheels from Axial Vibration

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General electric Company, 1924 - Steam-turbines - 67 pages
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17th Stage 4-node frequency 4-node wave train 6-node critical speed alternating current alternating-current alternating-current magnet amplitude backward wave backward-traveling wave bucket calculated calking camshaft cause centrifugal force coil registers connecting rod corre corresponding Crelles cycles per revolution cycles per second deflection curve determined developed edge diameter diaphragm direct current dovetail Electric Electric Company energy exploring coils film fixed coil fixed point force forward wave four nodes frequency recorded Frequency-speed Diagram Glass Records high spots higher frequency holes indicated isochronous kinetic energies magnet magnetic reluctance measured method minor resonant speed motor-generator moving wave natural frequency nodal nodal lines nodal points nozzle number of nodes Number of wheels occur operating speed oscillating Oscillograph Record particle per cent per Sec photograph films plate pulsating quencies radial radial nodes resonant frequencies revolving coil rheostats rotating coil rotor Rubbing running speed Sand Picture Schenectady shaft shape shown in Fig shows shroud band sine wave speed coefficient speed of rotation spond standing frequency standing vibration standing wave stationary coil stationary in space stationary wave steam turbine stiffness stresses Sub-Minor Resonance tachometer test wheel testing machine tion traveling waves turbine disk wheel turbine wheel type of vibration vacuum pump velocity vibration frequencies wave motion wave phenomena wave speed wave velocity wavelength wheel carrying wheel critical speeds wheel edge wheel itself wheel rim wheel showing wheel vibration wheel-testing machine WILFRED CAMPBELL windage

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