| 摘要 |
PROBLEM TO BE SOLVED: To provide a space craft stopping in a space and capable of seeing a scene. SOLUTION: Eight to sixteen blades of a propeller are made into a set and six sets are used. Three sets out of the six sets are rotated in the left direction and the remaining three setss are rotated in the right direction. to be lifted in the space by adjusting the left and right rotation speeds. The operation is followed by varying an angle of an opening/closing door of an air blowing-out port. When advancing faster, two sets of jet engine are used while closing the opening/closing door. COPYRIGHT: (C)2007,JPO&INPIT
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