| 摘要 |
A spaceship is provided with a freely spinning propeller mounted on the front end. The propeller significantly reduces resistance to flight and also deflects space particles which might otherwise slow the craft. The sides of the spacecraft have ridges which are coated on the front side with radiation reflecting material and on the back side with radiation absorbing material. The resultant force of radiations being absorbed from the rear and reflected from the front propels the spacecraft forward.
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