| 摘要 |
PURPOSE:To make it possible to deflect the propelling air flow broadly, and to improve the turning property, by furnishing an auxiliary rudder plate to a main rudder plate. CONSTITUTION:The steering gear 10 consists of a main rudder plate 18 and an auxiliary rudder plate 19, while the main rudder plate 18 is erected by a vertical rotary shaft 20 between the craft body 13 and a propelling duct 15, and rotated by pushing and pulling a rod 21 installed at the side of the rudder plate 18 through operating a handle 22. The auxiliary rudder plate 19 is furnished at the rear end of the main rudder plate 18 through a hinge 23, and a rail form body 24 is furnished at the lower end projecting frontward, which is installed erecting at the craft body 13, gearing with a supporting member 25 slidable freely. When the main rudder plate 18 is rotated, the auxiliary rudder plate 19 is bent in an angle larger than the of the main rudder plate 18, owing to the function of the supporting member 25.
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