| 摘要 |
PURPOSE: A belt tension control system for an unmanned helicopter is provided to smoothly control the tension of a belt by controlling a distance between a rear body and a tail gear box using tension control bolts. CONSTITUTION: A belt tension control system for an unmanned helicopter comprises a tail gear box assembly, tension control bolts(6), and a rear body. The tail gear box assembly transfers the rotation force of a timing belt to a tail rotor. The tension control bolts are coupled to the tail gear box assembly. The rear body comprises multiple pin holes(7) at parts connected to a tail gear box.
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