Bearing Screw
OwnerVladimir Dmitrievich Grechishnikovinventor
Life of this patent
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Abstract
Main rotor features rotor blades, mounted on the outside of a split bowl-shaped bushing; a centrifugal fan is mounted inside the bushing and fan blades rotate in direction opposite to the rotation of rotor blades. Rotor blades are encased in an external drum attached to its ends, which, in turn, is fastened to a bushing with bolts; a centrifugal fan is constructed as a disc with blades and no casing. Alternatively, rotor blades can be mounted on the outside of a split bowl-shaped bushing while the centrifugal fan is placed inside, and equipped with an external drum.
Claims4
A main rotor comprising rotor blades and a device for improving aerodynamic characteristics, the device for improving comprising a centrifugal fan mounted coaxially in a central part of the main rotor, the centrifugal fan having blades a direction of rotation opposite to a direction of rotation of the rotor blades.
Dependencies are inferred from the claim text.