| 摘要 |
A toy helicopter is provided having a rotor that gradually accelerates to simulate the start-up of a full-scale helicopter, wherein the gradual acceleration is induced by frictional interaction between the surface of a drive shaft and the surface of a bore formed in the rotor hub. Actuation is accomplished by lifting an actuating shaft which extends from the rotor hub and drive shaft to activate a motor; returning the actuating shaft to its resting position deactivates the toy. The toy also provides a flashing light and audio mechanism to further simulate the operation of a full-scale helicopter.
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