Duct combined with a ship's propeller having blade tip...

Details Duct combined with a ship's propeller having blade tip... Duct combined with a ship's propeller having blade tip...

B - Operations, Transporting

63

H

115/23

B63H 1/14 (2006.01) B63H 1/28 (2006.01) B63H 5/16 (2006.01)

Patent

CA 1141240

ABSTRACT OF THE DISCLOSURE A duct is provided for ship's propellers with blade tips having barrier plates extending transversely therefrom. The duct is effectively arranged to direct a fluid stream in substantially shock-free contact with such plates. The barrier plates are adequately arranged with respect to the trailing edge of the duct so as to get the highest propeller efficiency. When the propeller is rotating, the barrier plates describe a body of revolution which is a kind of extension of the after side of the duct.

363717

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