COAXIALLY ALIGNED PROPELLERS OF AN AERIAL VEHICLE
    1.
    发明申请
    COAXIALLY ALIGNED PROPELLERS OF AN AERIAL VEHICLE 审中-公开
    空中车辆的同轴对齐的螺旋桨

    公开(公告)号:WO2017165456A1

    公开(公告)日:2017-09-28

    申请号:PCT/US2017/023465

    申请日:2017-03-21

    Abstract: Sounds are generated by an aerial vehicle during operation. For example, the motors and propellers of an aerial vehicle generate sounds during operation. Disclosed are systems, methods, and apparatus for actively adjusting the position and/or configuration of one or more propeller blades of a propulsion mechanism to generate different sounds and/or lifting forces from the propulsion mechanism. A propulsion apparatus, comprising a motor (206), a propeller having a propeller blade (204) and a propeller adjustment controller configured to enable movement of the propeller such that the propeller blade (204) is extendable away from the motor (206) or retractable toward the motor (206). A method for adjusting a propulsion mechanism, comprising: determining a lifting force to be generated by the propulsion mechanism; determining a sound limit to be produced by the propulsion mechanism; selecting a combination of a revolutions per minute ("RPM") of a motor of the propulsion mechanism, a first position of a first propeller of the propulsion mechanism that will generate a first lifting force when rotated by the motor at the RPM, a second position of a second propeller of the propulsion mechanism that will generate a second lifting force when rotated by the motor at the RPM and a third position of a third propeller of the propulsion mechanism that will generate a third lifting force when rotated by the motor at the RPM such that a combination of the first lifting force, the second lifting force, and the third lifting force will generate the lifting force and produce a sound below the sound limit; causing, while the motor is rotating: the first propeller to move to the first position; the second propeller to move to the second position; and the third propeller to move to the third position.

    Abstract translation:

    声音由飞行器在运行过程中产生。 例如,飞行器的电动机和螺旋桨在运行期间会发出声音。 公开了用于主动调整推进机构的一个或多个螺旋桨叶片的位置和/或构造以从推进机构产生不同的声音和/或提升力的系统,方法和设备。 1。一种推进装置,包括马达(206),具有螺旋桨叶片(204)的螺旋桨以及螺旋桨调节控制器,所述螺旋桨调节控制器构造成使所述螺旋桨能够移动,使得所述螺旋桨叶片(204)可远离所述马达(206)延伸或者 可向马达(206)收回。 1。一种用于调节推进机构的方法,包括:确定将由所述推进机构产生的提升力; 确定推进机构要产生的声音极限; 选择推进机构的马达的每分钟转数(“RPM”),推进机构的第一推进器的第一位置和第二推进力的组合,所述推进机构的第一推进器在由马达以RPM旋转时将产生第一提升力, 所述推进机构的第二推进器的第二位置在由所述电动机以RPM旋转时将产生第二提升力,并且所述推进机构的第三推进器的第三位置在由所述电动机旋转时将产生第三提升力, 所述RPM使得所述第一提升力,所述第二提升力和所述第三提升力的组合将产生所述提升力并产生低于所述声音极限的声音; 在电机旋转时引起:第一螺旋桨移动到第一位置; 第二螺旋桨移动到第二位置; 第三个螺旋桨移动到第三个位置。

    PROPELLER BLADE TREATMENTS FOR SOUND CONTROL
    2.
    发明申请
    PROPELLER BLADE TREATMENTS FOR SOUND CONTROL 审中-公开
    用于声音控制的螺旋桨叶片处理

    公开(公告)号:WO2017106376A1

    公开(公告)日:2017-06-22

    申请号:PCT/US2016/066706

    申请日:2016-12-14

    Abstract: Sounds are generated by an aerial vehicle (101) during operation. For example, the motors and propellers (102) of an aerial vehicle (101) generate sounds during operation. Disclosed are systems, methods, and apparatus for actively adjusting the position of one or more propeller blade treatments (202) of a propeller blade (200) of an aerial vehicle (101) during operation of the aerial vehicle (101). For example, the propeller blade (200) may have one or more propeller blade treatments (202) that may be adjusted between two or more positions. Based on the position of the propeller blade treatments (202), the airflow over the propeller (102) is altered, thereby altering the sound generated by the propeller (102) when rotating. By altering the propeller blade treatments (202) on multiple propeller blades (200) of the aerial vehicle (101), the different sounds generated by the different propeller blades (200) may effectively cancel, reduce, and/or otherwise alter the total sound generated by the aerial vehicle (101).

    Abstract translation:

    声音在飞行中由飞行器(101)产生。 例如,飞行器(101)的电动机和螺旋桨(102)在操作期间产生声音。 公开了用于在飞行器(101)的操作期间主动调整飞行器(101)的螺旋桨叶片(200)的一个或多个螺旋桨叶片处理(202)的位置的系统,方法和设备。 例如,螺旋桨叶片200可以具有一个或多个可在两个或更多个位置之间调节的螺旋桨叶片处理202。 基于螺旋桨叶片处理(202)的位置,改变螺旋桨(102)上方的气流,从而在旋转时改变螺旋桨(102)产生的声音。 通过改变飞行器(101)的多个螺旋桨叶片(200)上的螺旋桨叶片处理(202),不同螺旋桨叶片(200)产生的不同声音可以有效地消除,减少和/或以其他方式改变总声音 由飞行器(101)产生。

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