Propeller combination for a boat propeller unit

Details Propeller combination for a boat propeller unit Propeller combination for a boat propeller unit

B - Operations, Transporting

63

H

115/22

B63H 1/18 (2006.01) B63H 5/10 (2006.01)

Patent

CA 1263825

TITLE: PROPELLER COMBINATION FOR A BOAT PROPELLER UNIT ABSTRACT OF THE DISCLOSURE The invention relates to a boat propeller unit with double, counter-rotating propellers. The forward propeller is designed to function without cavitation, while the after-propeller is optimally cavitating by being made cupped and with a blade width of between 60% and 75% of the blade width of the forward propeller.

518235

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