Device and method for a rotation of the wheels of the landing gear of aircraft
OwnerMario Gaiainventor
Life of this patent
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Abstract
The invention concerns a device and a method to cause the rotation of at least one wheel of the landing gear of aircraft, according to which between the supporting structure (12) of the landing gear and the brake group of the wheel is placed at least an actuator element with variable geometry (35) controlled and managed to develop such a force in order to impose an intermittent angular rotation of the wheel (15) when the brake group is operated.
Claims10
Device for the rotation of at least one wheel of a landing gear, for movement of an aircraft on the ground, the landing gear comprises a shaft carried by a stationary supporting structure, a wheel rim rotating on or with said shaft, a brake set with a turning part associated and turning with the wheel rim and a statoric part associated with said shaft by a sleeve integral with a flange, and a mechanism to apply and release the brake set, the sleeve and flange (21, 22) are capable of angular movements on said shaft, wherein between the supporting structure (12) of the landing gear and the brake set (19, 20) is mounted at least one actuator element with variable geometry (35, 39, 40, 42) controlled and managed to provide sufficient force to cause the flange (22) move through an angular movement on said shaft and cause an intermittent rotation of the wheel when the brake set is applied and, by this, said flange becomes integral with the wheel rim.
A method for causing the rotation of at least one wheel of a landing gear of an aircraft through a brake set associated with the wheel, where the brake set has a part of it constrained to a flange capable of angular movements on and relatively to a shaft acting as a rotation axis of the wheel, comprising the steps of:
- a. connecting at least one control actuator element to said flange to be switched on and switched off, under control, on the basis of an active and idle state of the brake set,
- b. operating, starting from an initial idle position, said control actuator element for applying a tangential force to said flange so as to cause its angular movement when the brake set is active and to transmit a corresponding angular rotation of the wheel through said brake set,
- c. deactivating the brake set and said at least one actuator element on termination of said angular movement of the flange to return the flange and the actuator to their initial positions,
- d. repeating in sequence steps b. and c. for an intermittent unidirectional rotation of the wheel.
Dependencies are inferred from the claim text.