Chapter 5-FUNDAMENTALS OF SHIP PROPULSION AND STEERING 



CRUISING TURBINE 



SINGLE REDUCTION- 

 GEAR 



HIGH PRESSURE- 

 TURBINE 



1st. REDUCTION 

 GEAR 



2nd. REDUCTION 

 PINION 



JACKING 

 GEAR ENCASED 



V LOW PRESSURE 

 -TURBINE 



■QUILL SHAFT 



■1st. REDUCTION 

 GEAR 



2nd. REDUCTION 

 GEAR 



MAIN SHAFT COUPLING 



47.30 

 Figure 5-17.— Turbines and locked train double reduction gearing of DD 692 class destroyer. 



floating member (or distance piece) which has 

 external teeth around the periphery at each end. 

 The shaft rings are bolted to flanges on the two 

 shafts to be connected; the floating member is 

 placed so that its teeth engage with those of the 

 shaft rings. 



Cruising turbine couplings which transmit 

 lower powers may use external floating mem- 

 bers with internal teeth. With this design, the 

 shaft rings become spur gears with external 

 teeth on the ends of the pinion shaft and turbine 

 shaft. Figure 5-22 shows a flexible coupling of 



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