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SELECTING PROPELLERS FOR PERFORMANCE AND NOISE SHAPING

  • US 20170174317A1
  • Filed: 12/18/2015
  • Published: 06/22/2017
  • Est. Priority Date: 12/18/2015
  • Status: Active Grant
First Claim
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1. An unmanned aerial vehicle comprising:

  • a frame;

    a first motor mounted to the frame;

    a second motor mounted to the frame;

    a first propeller coupled to the first motor, wherein the first propeller is substantially statically balanced and substantially dynamically balanced;

    a second propeller coupled to the second motor, wherein the second propeller is at least one of statically imbalanced or dynamically imbalanced, and wherein the second propeller is configured to emit a first sound having a first sound pressure level and within a first frequency spectrum when rotated at a critical speed; and

    a computing device having a memory and one or more computer processors,wherein the computing device is configured to at least;

    initiate a first operation of the first motor at a first time; and

    initiate a second operation of the second motor at a second time.

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