| 摘要 |
A rotating circular airfoil system (10) that creates lift when rotates about its axis (12) is disclosed. This circular airfoil is symmetrical about its axis and has a body-sectional-shape (14) similar to those of modern airplane wings. It is hollow in the middle to create a circular inner edge (16), which is the leading edge of the airfoil while its outer edge (18) is the trailing edge. Angle of attack (20) is symmetrically provided. Pairs of fins (22) are attached or embodied onto the top and the bottom of the airfoil. These sectional-tee-shape fins run radiately from the inner edge of the circular airfoil. Spokes (24) from the center of the circular airfoil attached to its inner edge enable it to be rotated by a turn-shaft that aligns to the airfoil axis through center hole (26). When this circular airfoil rotates about its axis in the air, the surrounding air is contact by the fins and forced to travel from the inner edge to the outer edge of the circular airfoil, as a result of the centrifugal action. While the air continuously travels from the leading edge (16) to the trailing edge (18) of the airfoil, it creates the well known lift force (28) of the airfoil principal. This circular airfoil system also operates in water or other fluids to create lift or propelling force. |
