AERODYNAMIC CONCEPT FOR CREATING A PROPULSION FORCE BY ROTATING AN AXISYMMETRIC BODY PARTIALLY HIDDEN BY ANOTHER BODY

摘要

The present invention is a new concept of aerodynamic propulsion requiring two bodies. The first is axisymmetric rotating on its axis and the second is a fixed body, steerable and capable of marrying part of the outer surface of the previous body (eg cone and hollow half-cone). With an order of magnitude of a few millimeters separating them, the two bodies belong to the same system. This propulsion principle is different from the others because of its nonexistent angle of attack. In addition, it allows a propelling force perpendicular to the hidden surface of the first body (surface determined by the user) which gives the possibility of deciding the direction of movement. And finally this concept has a yield higher than 1 during a horizontal movement of the system. In terms of utility, this principle applies to any device powered by a wind power.