Device for unlocking an undercarriage in a deployed position, and an undercarriage fitted with such a device

摘要

A simple device for blocking and unblocking the locking member of an undercarriage having a breaker strut and including an unlocking device. The device comprises a rotary actuator of axis parallel to the hinge axis of the links of the stabilizing member; a crank connected to a shaft of the actuator; a pawl hinged to the end of the crank and including a step; a pin secured to and at a distance from one of the links of the stabilizing member; and return means for urging the pawl towards the pin. The actuator is actuatable between a first angular position in which the pin is in contact with the pawl facing the step while the links are substantially in alignment, and a second angular position that the crank reaches when the step of the pawl has pushed back the pin, taking the links of the stabilizer member out of alignment.

主权项

1. An aircraft undercarriage comprising a leg hinged to the aircraft about a raising axis, the leg being stabilized in the deployed position by a strut comprising two hinged-together connecting rods, the strut being maintained in its aligned position by a stabilizing member comprising two hinged-together links, one of the links being hinged to the strut and another link being hinged to the leg or to the aircraft, said links being held in a substantially aligned and locked position, wherein the undercarriage includes an unlocking device comprising:
a rotary actuator of axis parallel to the hinge axis of the links of the stabilizing member; a crank connected to a shaft of the actuator; a pawl hinged to the end of the crank and including a step; a pin secured to and at a distance from one of the links of the stabilizing member; and return means for urging the pawl towards the pin; the crank being actuatable between a first angular position in which the pin is in contact with the pawl facing the step while the links are substantially in alignment, and a second angular position that the crank reaches when the step of the pawl has pushed back the pin, taking the links of the stabilizer member out of alignment, the pin sliding on the pawl without losing contact with the pawl.