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    • 6. 发明授权
    • Optimum speed rotor
    • 最佳转速
    • US6007298A
    • 1999-12-28
    • US253391
    • 1999-02-19
    • Abraham E. Karem
    • Abraham E. Karem
    • B64C27/57B64C27/04B64C27/467B63H1/28
    • B64C27/467B64C27/04Y10S416/05
    • A variable speed helicopter rotor system and method for operating such a system are provided which allow the helicopter rotor to be operated at an optimal angular velocity in revolutions per minute (RPM) minimizing the power required to turn the rotor and thereby resulting in helicopter performance efficiency improvements, reduction in noise, and improvements in rotor, helicopter transmission and engine life. The system and method provide for an increase in helicopter endurance and. The system and method also provide a substantial improvement in helicopter performance during take-off, hover and maneuver.
    • 提供了一种用于操作这种系统的变速直升机转子系统和方法,其允许直升机转​​子以以每分钟转数(RPM)的最佳角速度操作,从而最小化转动转子所需的功率,从而导致直升机性能效率 改进,降低噪音,改善转子,直升机传动和发动机寿命。 该系统和方法提供直升机耐力和增加的能力。 该系统和方法还提供了起飞,悬停和机动的直升机性能的实质性改进。