Patent ID: 9157324
Filing Date: 2015-10-13
Classification: B63H,F01D,F04D,F05D,Y02T

Abstract:
1. A propeller comprising a right perfect circular cylindrical block spinning around a central rotational axis, said cylindrical block having a plurality of holes as helical tunnels surrounding the rotational axis, each of the holes having inlet and outlet at each end face of the cylindrical block, respectively, wherein each end face of the cylindrical block is disposed at each end of the cylindrical block, said holes having cross-sections with perfect circular shape along the tunnel length, and said perfect circular shape lying constantly in perfect perpendicular plane to the rotational axis along all the tunnel extent whereby the cylindrical block rotation induces minimal turbulence on the perpendicular momentum of the fluid inside each respective hole thus avoiding collateral noise and delaying the cavitation phenomena.