| 摘要 |
PROBLEM TO BE SOLVED: To provide a propeller improved in properties.SOLUTION: One or more blades 202, 204 are connected to a central shaft 206. A propeller is rotated counterclockwise as shown in curved arrows. With this, as shown by three arrows on the right and left sides, air flows are created toward the propeller center from its opposite sides. Air also flows into the paper surface (front to back) from the configuration shown in the figure with the counterclockwise rotation of the propeller. Namely, the propeller pulls air in from the sides of the blades toward the rotation axis of the propeller and creates pressure in an area near the center of the rotating shaft of the propeller so that thrust is generated.SELECTED DRAWING: Figure 2 |
