Marine propulsor

专利名称：Marine propulsor发明人：Chester A. Garis, Jr.申请号：US07/370686申请日：190623公开号：US05078628A公开日：19920107

摘要：A marine propulsor for submersible vessels or surface vessels powered byunderwater propulsion units. A shaftless motor with disk- shaped rotor and stator(s) ismounted in the vessel structure with a blade hub mounted on the rotor, the hubincluding propeller blades extending beyond the circumference of the vessel housing.The motor is substantially iron-free with much of the rotor/stator volume being occupiedby windings, thus providing sufficient power without taking up substantial space oradding burdensome weight. The rotor is journal mounted in the vessel and

circumferential thrust bearing assemblies are provided around the rotor/blade hubassembly. A water cooling/lubricating system is provided for the bearings and

rotor/stator(s). Power is supplied individually to two stators mounted on either side ofthe rotor to control electromagnetic forces on the rotor to offset thrust forces and toreduce the magnitude of propulsor induced structural vibration. Rotor excitation currentmay be inductively supplied, or permanent magnets or low reluctance magnetic materialmay be mounted in the rotor. Sound insulation is interposed between stators and thevessel structure to dampen ac noise/vibrations. In a dual counter-rotating propulsorembodiment, a thrust transference member is interposed between propulsor assemblies.

申请人：NEWPORT NEWS SHIPBUILDING AND DRY DOCK COMPANY

代理机构：Lalos & Keegan

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