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VIBRATION ABSORBING DEVICE FOR ROTORCRAFT

  • US 3,836,098 A
  • Filed: 03/03/1972
  • Issued: 09/17/1974
  • Est. Priority Date: 03/08/1971
  • Status: Expired due to Term
First Claim
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1. For use in rotary wing vehicles having rotors and means driving said rotors, a vibration absorbing apparatus, comprising:

  • a structural member through which exciting forces are transmitted to the fuselage of said rotary wing vehicle;

    means coupling said structural member to said vehicle;

    a vibration weight;

    means coupling said vibration weight to said structural member in a position and direction of vibration to offset a selected one of a plurality of said exciting forces by the inertia of said vibration weight, said vibration weight coupling means including a resilient member interposed between and coupled to said vibration weight and said structural member;

    driving means coupled to saiD structural member for imparting vibrations to said vibration weight through said structural member and said resilient member; and

    control means for controlling said driving means to control the vibrations imparted to said vibration weight.

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