| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an unmanned aircraft and an unmanned aircraft system reduced in influence of lateral wind on a machine body. Ž<P>SOLUTION: This unmanned aircraft 1 includes a body 10 extending along a machine axis 70, a propeller 13 mounted on the body 10 to deliver wind in a direction 77 parallel to the machine axis 70, steering wings 12A to 12D arranged on a leeward side of the propeller 13 and a duct 19. The duct 19 surrounds the propeller 13 and the steering wings 12A to 12D not to make the propeller 13 and the steering wings 12A to 12D project from the duct 19 when viewed from a direction orthogonal to the machine axis 70. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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