Two general classes of double reduction gears used on merchant vessels are "articulated" type and "nested" gear; difference in torsional characteristics of two arises from different type of connection between slow speed pinions and high speed gears; first or one-noded critical speed is easily approximated by calculating only inertia of propeller and flexibility of line shafting; second or 2-noded critical speed is dependent on gear and turbines; article chiefly concerned with 2-noded critical speed.
Torsional critical speeds in geared-turbine propulsion equipment
Mar Eng Shipg Rev
Marine Engineering and Shipping Review ; 50 , n 7
1945
4 pages
Article (Journal)
English
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