| 摘要 |
A PROPELLER IS MADE UP OF A PROPELLING UNIT HAVING A PLURALITY OF BLADES, A DRIVING UNIT FOR DRIVING THE PROPELLING UNIT, AND A PLURALITY OF DEFORMABLE TRANSMISSION UNITS LOCATED BETWEEN THE PROPELLING UNIT AND THE DRIVING UNIT SUCH THAT THE TRANSMISSION UNITS ARE RETAINED IN THE RETAINING SLOTS OF THE PROPELLING UNIT AND THE DRIVING UNIT. THE TRANSMISSION UNITS ARE TUBULAR IN SHAPE AND CAPABLE OF DEFORMING TO ABSORD AN IMPACT FORCE EXERTING ON THE TRANSMISSION UNITS IN A DIRECTION PERPENDICULAR TO THE LONGITUDINAL AXIS OF THE TRANSMISSION UNITS, SO AS TO SAFEGUARD THE STRUCTURAL INTEGRITY OF THE PROPELLER AT SUCH TIME WHEN THE PROPELLER IN MOTION IS IMPACTED ON BY A FOREIGN OBJECT.
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