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SUMMARY:Comparison of Submarine Drive Topologies Using Multi-objective Gen
 etic Algorithms - Ben Skinner\, Engineering Design Centre
DTSTART:20071121T160000Z
DTEND:20071121T170000Z
UID:TALK8916@talks.cam.ac.uk
CONTACT:Julie Jupp
DESCRIPTION:*Abstract*: Since the introduction of the first nuclear powere
 d submarine the USS Nautilus in 1955\, propulsive thrust for nuclear power
 ed submarines has been provided by geared steam turbine drive. Steam turbi
 nes however\, operate inefficiently at part load\, adversely affecting pro
 pulsive efficiency at speeds submarines spend the majority of their servic
 e life at. A recent trend for surface combatants is to move towards all-el
 ectric propulsion\, which offers many advantages\, including improved oper
 ating efficiency at part load. However\, due to the inherent limitations o
 f submarine propulsion design the application of electric drive to submari
 nes is still in contention.\n\nThis presentation uses multi-objective evol
 utionary optimisation and inverse simulation to compare the merits of diff
 erent propulsion concepts\, with a focus on overall system efficiency. In 
 particular\, electrical drive and hybrid drive are compared to the traditi
 onal steam turbine mechanical drive. Trade-offs in propulsion system desig
 n are discussed as well as the effect of control strategy optimisation on 
 the final system design and performance. Conclusions are drawn on the most
  efficient propulsion system design for future submersible combatants.
LOCATION:Lecture Room 5\, 1st Floor\, Engineering Department
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