BRAKE SYSTEM FOR AIRCRAFT UNDERCARRIAGE
First Claim
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).
1 Assignment
0 Petitions
Accused Products
Abstract
A braking system for an aircraft provided with undercarriage, wherein an axial-flux reversible electrical machine is associated to at least one wheel of the undercarriage and is set in rotation by the rotation of the wheel. Current-dissipator means are provided, which can be connected to the windings of the axial-flux reversible electrical machine during rotation of the wheel in the landing phase for dissipating in the current-dissipator means the induced currents generated by the machine, which behaves as current generator, and producing a braking effect that slows down the movement of the wheel. An epicyclic reducer is provided set between the wheel of the undercarriage and the rotor of the reversible electrical machine; the epicyclic reducer provides a transmission ratio T in such a way that the rotor will turn at a velocity Tω with respect to the velocity of rotation ω of the wheel.
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Citations
14 Claims
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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). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- said epicyclic reducer (21) providing a transmission ratio T in such a way that the rotor (32) will turn at a velocity Tω
Specification