Describe, with the aid of sketches, how main propulsion efficiency can be improved by the addition of EACH of the following (a) Ducted propeller (Kort nozzle) (5) (b) Vane or Grim wheel aft of the propeller (5)
Describe, with the aid of sketches, how main propulsion efficiency can be improved by the addition of EACH of the following (a) Ducted propeller (Kort nozzle) (5) (b) Vane or Grim wheel aft of the propeller (5)
UKM Tuticorin 
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