Gearing technology in the naval marine context

摘要

The trend towards integrated full electric propulsion has led some commentators to infer the demise of geared propulsion solutions in naval platforms. The widening scope of design considerations, specifically the development of multihull platforms and the requirement to propel vessels in excess of 35 knots, bring the Marine Engineer to the limitations of electric motor technology. This paper outlines the research work conducted under the management of the Marine Propulsion Systems Integrated Project Team, part of the UK MOD's Warship Support Agency, to support and enhance in-service geared solutions. It also discusses, in broad outline, the advances in technology available to tailor gearing designs for noise-critical applications. It is the intention to demonstrate how benefits derived from in-service applications can contribute to the inclusion of gearing in marine propulsion systems for future platforms. Current naval combatant applications have demonstrated the success of pull-through from fast ferry type systems with direct-mechanical drive Waterjet and various Prime Mover combinations. The paper explores the possibilities of geared electric designs and how these hybrid options may offer effective solutions when considering the weight and volume limitations in a frigate sized (5000 tonnes) high-speed vessel.