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BRAKE SYSTEM FOR AIRCRAFT UNDERCARRIAGE

  • US 20110253833A1
  • Filed: 02/16/2011
  • Published: 10/20/2011
  • Est. Priority Date: 02/16/2010
  • Status: Active Grant
First Claim
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1. A braking system for an aircraft (2) provided with undercarriage (7) in which an axial-flux reversible electrical machine (20) is associated to at least one wheel of the undercarriage and is set in rotation by the rotation of the wheel, there being provided current-dissipator means (40a, 40b, 40c) that can be connected (38a, 38b, 38c) to the windings (36a, 36b, 36c) of said axial-flux reversible electrical machine (20) during rotation of said wheel (10) in the landing phase for dissipating in the current-dissipator means (40a, 40b, 40c) the induced currents generated by the machine (20), which behaves as current generator (20), and producing a braking effect that slows down the movement of said wheel (10),said braking system being characterized in that it comprises an epicyclic reducer (21) set between the wheel (10) of the undercarriage and the rotor (32) of said reversible electrical machine (20);

  • said epicyclic reducer (21) providing a transmission ratio T in such a way that the rotor (32) will turn at a velocity Tω

    with respect to the velocity of rotation ω

    of the wheel (10).

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