Principles of naval engineering - Historic Naval Ships Association

Chapter 5-FUNDAMENTALS OF SHIP PROPULSION AND STEERINGCRUISING TURBINESINGLE REDUCTION-GEARVLOW PRESSURE-TURBINEHIGH PRESSURE-TURBINEQUILL SHAFT1st.REDUCTIONGEAR1st.REDUCTIONGEAR2nd. REDUCTIONPINION2nd.REDUCTIONGEARJACKINGGEAR ENCASEDMAIN SHAFT COUPLING47.30Figure 5-17.— Turbines and locked train double reduction gearing of DD 692 class destroyer.floating member (or distance piece) which hasexternal teeth around the periphery at each end.The shaft rings are bolted to flanges on the twoshafts to be connected; the floating member isplaced so that its teeth engage with those of theshaft rings.Cruising turbine couplings which transmitlower powers may use external floating memberswith internal teeth. With this design, theshaft rings become spur gears with externalteeth on the ends of the pinion shaft and turbineshaft. Figure 5-22 shows a flexible coupling of101