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Dual rotor helicopter with tilted rotational axes

  • US 8,052,081 B2
  • Filed: 07/16/2009
  • Issued: 11/08/2011
  • Est. Priority Date: 08/22/2008
  • Status: Active Grant
First Claim
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1. A rotary wing aircraft apparatus comprising:

  • a body;

    an arm connected to the body at a first end thereof and a rotor pair connected to an opposite second end of the arm;

    the rotor pair comprising an upper rotor driven by an upper motor and rotating about an upper rotor axis and a lower rotor driven by a lower motor and rotating about a lower rotor axis;

    wherein the upper and lower rotor axes are tilted with respect to each other.

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