Integration Impacts of a Hybrid Contra-Rotating Shaft-Pod (HCRSP) Arrangement on Naval Auxiliaries.

摘要

Model scale testing and evaluation of a Hybrid Contra-Rotating Shaft- Pod (HCRSP) concept on Military Sealift Command's (MSC's) T-AKE 1 design suggests a potential 7% reduction in the delivered power required, when compared to that of the current single shaft, single propeller system. This study supports the model scale evaluation by investigating the wider system implications of HCRSP on ship design and performance, specifically to identify if the hydrodynamic advantage can be translated into through-life cost and performance benefits. The study considers the physical and electrical integration aspects of the HCRSP concept and the corresponding impact on fuel consumption, speed, weight, and redundancy. It focuses on the impacts of retrofitting a HCRSP system into both a currently operational T-AKE 1 and a new build, modified-repeat design. Additionally the impacts of a HCRSP concept on future 20 and 24-knot naval auxiliary ship designs are discussed.