×

Propeller blade leading edge serrations for improved sound control

  • US 10,099,773 B2
  • Filed: 12/18/2015
  • Issued: 10/16/2018
  • Est. Priority Date: 12/18/2015
  • Status: Active Grant
First Claim
Patent Images

1. An aerial vehicle comprising:

  • a first motor configured to rotate a propeller such that the propeller generates a lifting force;

    the propeller including;

    a hub that is coupled to the motor so that the motor can rotate the propeller;

    a propeller blade extending from the hub, the propeller blade including;

    a leading edge;

    a tip;

    a trailing edge; and

    a plurality of serrations protruding from the propeller blade along at least a portion of the leading edge of the propeller blade;

    a controller coupled to at least some of the plurality of serrations and configured to move the at least some of the plurality serrations while the propeller blade is rotating, the controller including an adjustment arm that extends along the propeller blade, contacts the at least some of the plurality of serrations, and moves between a first adjustment arm position and a second adjustment arm position; and

    a sensor configured to monitor a sound generated around the aerial vehicle; and

    wherein the controller moves the adjustment arm between the first adjustment arm position and the second adjustment arm position based at least in part on the sound.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×