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US 12,668,357 B2Granted
Variable-length landing gear and aircraft equipped with such a landing gear
AssigneeSafran Landing Systems
InventorsAurélien Doux, Vincent Pavoine, Philippe Henrion, Sébastien Dubois
Life of this patent
Estimating the term…
Abstract
A landing gear includes a supporting structure, and a damping cylinder connected to a lever which is hinged to the supporting structure about a hinge axis. The lever is movable between a towards end position, in which the wheel is moved towards the hinge axis, and an away end position, in which the wheel is moved away from the hinge axis. The towards and away end positions are on either side of an intermediate position, in which the lever and the cylinder are aligned. The end away position is defined by a stop secured to the supporting structure and against which the lever in the away position is applied to take up the landing forces.
Claims16
A landing gear, comprising:
- a supporting structure;
- a rocker lever hinged to an end of the supporting structure, said rocker having an end carrying a wheel;
- and
- a damping cylinder having a first end connected by a hinge member to the supporting structure and a second end connected to the rocker lever,
- wherein the hinge member comprises a lever having a first end which is hinged to the supporting structure about a first hinge axis and a second end which is hinged to the cylinder about a second hinge axis, such that the lever pivots about the first hinge axis between an end towards position, in which the wheel is moved towards the first hinge axis to allow the landing gear to be housed in a hold, and an end away position, in which the wheel is moved away from the first hinge axis, the end towards position and end away position being on either side of an intermediate position, in which the lever and the cylinder are axially aligned, and the end away position being defined by a stop secured to the supporting structure and against which the lever in the end away position is applied to take up the landing forces transmitted along a longitudinal axis of the cylinder when the landing gear extends outside the hold, and in that the landing gear comprises an actuator connected to the lever and to the supporting structure to move the lever between the end towards position and the end away position.
2 more elements
A landing gear comprising:
- a supporting structure,
- a rocker lever that is hinged to an end of the supporting structure and has an end carrying a wheel, and
- a damping cylinder having a first end connected by a hinge member to the supporting structure and a second end connected to the rocking lever,
- wherein the hinge member comprises a lever having a first end which is hinged to the supporting structure about a first hinge axis and a second end which is hinged to the cylinder about a second hinge axis, such that the lever pivots about the first hinge axis between an end towards position, in which the wheel is moved towards the first hinge axis, and an end away position, in which the wheel is moved away from the first hinge axis, the end towards position and end away position being on either side of an intermediate position, in which the lever and the cylinder are aligned, the lever and the damping cylinder having longitudinal axes forming a non-zero angle to one another when the lever is the end away position and the end away position being defined by a stop secured to the supporting structure in such a way that, when the lever is in the end away position, the longitudinal axis of the cylinder is inclined towards the stop such that the landing forces transmitted along the longitudinal axis of the cylinder tend to apply the lever against the stop, and in that the landing gear comprises an actuator connected to the lever and to the supporting structure to move the lever between the end towards position and the end away position.
1 more element
A landing gear comprising:
- a supporting structure,
- a rocker lever that is hinged to an end of the supporting structure and has an end carrying a wheel, and
- a damping cylinder having a first end connected by a hinge member to the supporting structure and a second end connected to the rocking lever,
- wherein the hinge member comprises a lever having a first end secured to a shaft pivotally mounted on the supporting structure about a first hinge axis and a second end which is hinged to the cylinder about a second hinge axis, such that the lever pivots about the first hinge axis between an end towards position, in which the wheel is moved towards the first hinge axis, and an end away position, in which the wheel is moved away from the first hinge axis, the end towards position and end away position being on either side of an intermediate position, in which the lever and the cylinder are aligned, and the end away position being defined by a stop secured to the supporting structure and against which the lever in the end away position is applied to take up the landing forces transmitted along a longitudinal axis of the cylinder, and in that the landing gear comprises an actuator connected to the shaft and to the supporting structure to pivot the shaft to move the lever between the end towards position and the end away position.
1 more element
Dependencies are inferred from the claim text.