| 摘要 |
PROBLEM TO BE SOLVED: To uniformize an aerodynamic characteristic of a flap arranged on a tapered wing in the span direction. SOLUTION: This flap F arranged on the tapered main wing is supported by three link units Lr, Lm and Lt. The respective link units Lr, Lm and Lt are mutually formed in a similar shape, and the similarity ratio coincides with the ratio of the cord length of the main wing corresponding to positions of these link units Lr, Lm and Lt. Thus, when interlocking and driving the three link units Lr, Lm and Lt by an actuator 31 and connecting rods 35 and 37, a backward overhang quantity of the flap F changes in the span direction according to the similarity ratio. Thus, the flap F can be overhung to an optimal position and an angle according to the cord length of the main wing in span directional respective parts of the main wing, and particularly in a slotted flap, a proper slot width can be secured in the span directional respective parts.
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