| 摘要 |
PURPOSE: A method for accelerating a take-off in a helicopter is provided to reduce a take-off time of the helicopter by applying centripetal force into a rotational force of a propeller unit. CONSTITUTION: A helicopter for accelerating a take off comprises a weight(3) installed on a specific inner portion of a propeller(2); a steel(6) moving the propeller by being mounted on the specific inner portion; a shaft(1) transferring power of an engine by being connected to the propeller; and an electromagnet(7) mounted on an inner portion of the shaft with a wire(5) by being engaged with a sensor(4). The sensor detects centrifugal force of the propeller and supplies power into the electromagnet. Then, the electromagnet has magnetic force corresponding to rotational force of the propeller for pulling the weight of the propeller. Thereby, the helicopter for accelerating the take off reduces a take-off time of the helicopter by applying centripetal force into the rotational force of the propeller.
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