VERTICAL LIFT PROPULSOR Russian patent published in 2020 - IPC B64C29/00 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft engineering, particularly, to lifting propulsor designs. Propulsor comprises a cylindrical body with thrust journals, a reduction gear arranged inside the middle part of the body and having a drive shaft passed into the hole of one of the two support necks, driven vertical shafts, which ends are fixed in bearings, attached to housing, upper and lower groups of discs, fixed on vertical shafts one above another. Each of the discs is made of two interchangeable discs bolted to each other by their end surfaces. On upper and lower end surfaces of discs there are radial teeth narrowing towards center of rotation and expanding from center of rotation. Teeth on the upper surface of the disc are inclined in the opposite direction from the direction of rotation of the disc, and the teeth on the lower surface of the disc are deflected in the direction of rotation of the disc. Outer surface of each of the discs is in the form of a convex hyperbolic curve, the initial point of which lies on the end surface of the disc, and the inner surface of each tooth is concave and represents a part of the circumference connecting the tooth apex and the end surface of the disc.

EFFECT: higher operational characteristics of propulsor.

1 cl, 8 dwg