Invention Grant
US09346526B2 Method of and a device for reducing the azimuthal torque acting on a pulling pod unit or azimuth thruster
有权
用于减小作用在牵引荚单元或方位推进器上的方位转矩的方法和装置
- Patent Title: Method of and a device for reducing the azimuthal torque acting on a pulling pod unit or azimuth thruster
- Patent Title (中): 用于减小作用在牵引荚单元或方位推进器上的方位转矩的方法和装置
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Application No.: US14358987Application Date: 2012-10-05
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Publication No.: US09346526B2Publication Date: 2016-05-24
- Inventor: Anders Ottosson , Rikard Johansson
- Applicant: ROLLS-ROYCE AKTIEBOLAG
- Applicant Address: SE
- Assignee: Rolls-Royce Aktiebolag
- Current Assignee: Rolls-Royce Aktiebolag
- Current Assignee Address: SE
- Agency: Dentons US LLP
- Agent Eric L. Sophir
- Priority: SE1151101 20111118
- International Application: PCT/SE2012/051067 WO 20121005
- International Announcement: WO2013/074017 WO 20130523
- Main IPC: B63H20/32
- IPC: B63H20/32 ; B63H21/36 ; B63H1/26 ; B63H25/42 ; B63H5/125
Abstract:
This invention relates to a device and method of reducing the azimuthal torque acting on a pulling pod unit or azimuth thruster (1) having a rotary pod housing (2) with a substantially vertical slewing axis (3) and a fixed downwardly directed first fin (4) carried by the pod housing (2) abaft the slewing axis (3), wherein said first fin is in the form of an elongated strip-shaped vane (4) and extends abaft the slewing axis (3) along the pod housing (2) to the vicinity of a rear end (5) thereof.
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