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US 8,147,284 B2Granted
Submersible propulsor unit
AssigneeROLLS-ROYCE plc
InventorsSimon Banks, John Owen Fowler
Life of this patent
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Abstract
A submersible propulsor unit, comprising: a duct defined between a duct hub and a duct wall, the duct having a water inlet and a water outlet, a propeller means rotatably mounted within the duct, and an array of stator vanes extending between the duct hub and the duct wall, wherein the array of stator vanes comprises stator vanes having a first stiffness and stator vanes having a second stiffness.
Claims16
A submersible propulsor unit, comprising:
- a duct defined between a duct hub and a duct wall, the duct having a water inlet and a water outlet;
- and
- a propeller means rotatably mounted within the duct, and an array of stator vanes extending between the duct hub and the duct wall, wherein
- the array of stator vanes includes stator vanes having a first stiffness and stator vanes having a second stiffness, and
- the first stiffness is greater than the second stiffness.
2 more elements
A submersible propulsor unit, comprising:
- a duct defined between a duct hub and a duct wall, the duct having a water inlet and a water outlet,
- a propeller means rotatably mounted within the duct, and
- an array of stator vanes extending between the duct hub and the duct wall, wherein the array of stator vanes includes first stator vanes formed of metallic material and second stator vanes formed of a composite material.
Dependencies are inferred from the claim text.