Title:
THRUSTER WITH DUCT ATTACHED AND VESSEL COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2011/102103
Kind Code:
A1
Abstract:
Disclosed is a thruster with a duct attached, wherein the cross-section shape of a wing-shaped cross-section duct (5), which is provided upon the periphery of a propeller (4), is provided with a bulge portion (6) on the exterior periphery of the leading edge portion of the duct, said bulge portion (6) bulging outwardly from a standard wing shape in a circular arc shape, such that pressure changes on the external surface of the leading edge portion are alleviated when a vessel travels at high speed. The duct (5) has an angle (α) that opens in the leading edge direction such that a prescribed tow force is generated when operating at low speeds, thereby facilitating improved efficiency, allowing ensuring stable tow force when operating at low speeds and preventing ablative eddies from forming upon the exterior surface of the duct when operating at high speeds.
Inventors:
FUNENO ISAO
Application Number:
PCT/JP2011/000770
Publication Date:
August 25, 2011
Filing Date:
February 10, 2011
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
FUNENO ISAO
FUNENO ISAO
International Classes:
B63H5/15
Foreign References:
| JP2006306304A | 2006-11-09 | |||
| JPH02151593A | 1990-06-11 | |||
| JPS5143598A | 1976-04-14 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
Patent business corporation Owner old patent firm (JP)
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Claims:
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