SAFRAN LANDING SYSTEMS CANADA INC.

A redundant sensor system includes first and second sensors of the same type. The first and second sensors are configured to sense and measure a parameter, such as torque, applied to an object, such as a shaft. A preselected measurement value difference is provided between the first and second sensors. The preselected measurement value difference, such as an offset or a difference in sensor gain, can be utilized by the redundant sensor system or an associated control system to detect a failure of one of the sensors. Output signals of the first and second signals that do not reflect the preselected measurement value difference within given tolerance indicate that one of the sensors has failed, and a determination that an associated system is untrustworthy can be obtained.

A bushing is configured for installation in the hole of a lug, which has a protrusion extending radially inward from a surface of the hole. The bushing includes a first cylindrical body that is sized to be received within the hole of the lug. A flange extends radially outward from one end of the first cylindrical body, and a first recess is formed in the first cylindrical body to a radial face. The recess is sized and configured to receive the protrusion of the lug when the bushing is installed in the hole. Engagement of the protrusion with the recess preventing movement of the bushing relative to the lug.

A shock absorber for a vehicle includes a cylinder and a piston, a portion of which slidably disposed with the cylinder. A magnetic target is fixedly positioned relative to the piston, and a sensor is fixedly positioned relative to the cylinder. The sensor generates a signal according to the position of the magnet target relative to the sensor.

A pin for a pinned joint includes a hollow body with a first and second end caps coupled to first and second ends, respectively. The body and the end caps at least partially define a cavity within the body, wherein at least one aperture extends through the hollow body. A main piston is slidably disposed within the cavity and divides the cavity into a first chamber proximate to the first end and a second chamber proximate to the second end and fluidly isolated from an environment around the body. A lubricant is disposed within the first chamber. The main piston moves toward the first end of the body when a pressure in the second chamber is greater than a pressure of the environment. Movement of the main piston toward the first end of the body discharges lubricant through the at least one aperture.

A maglev system includes a maglev vehicle that reciprocates between a levitated state and a non-levitated state. The vehicle includes a capsule supported by a first left wheel and a corresponding first right wheel when the vehicle is in the non-levitated state. The system further includes a track having a left rail and a right rail, each of the left and right rails having a plurality of plates arranged in series. Proximate ends of adjacent plates define a joint. Each rail provides a support surface that the first left and right wheels rollingly engage when the vehicle is in the non-levitated state. The joints of the left rail are offset in a longitudinal direction from the joints of the right rail.

A brake assembly is suitable for use in conjunction with a wheel having a rim rotatably mounted to an axle. The brake assembly includes a rotor configured to rotate about the axis with the rim. The rotor has a first frustoconical rotor surface and either a conductive element or a magnet. The brake assembly further includes a stator fixed in rotation about the axis and configured for selective translation parallel to the axis. The stator has a first frustoconical stator surface proximate to the first frustoconical rotor surface and a conductive element, when the stator has a magnet, or a magnet, when the stator has a conductive element.

Wheel acceleration systems are disclosed that provide a motive force to at least one wheel of an aircraft, in order to accelerate the aircraft to takeoff speed with the assistance of main engine thrust. The wheel acceleration system includes a pyrotechnic unit configured to generate expanding gases by combusting a propellant, and a rotary propulsion unit pneumatically coupled to the pyrotechnic unit. The rotary propulsion unit includes an impeller configured to be driven by the expanding gases and to deliver torque to the wheel.

A fuse pin valve includes a housing, a piston, and a mechanical fuse, such as a fuse pin. As assembled, the piston is movably disposed in the housing and is retained in a static position by the fuse pin. Upon a certain pressure (e.g., an abnormal pressure) acting on the piston, the fuse pin fails, thereby releasing the piston to move from a first or start position to second or end position. In the start position of the piston, the valve is in a first operational state (e.g., a closed state). In the end position of the piston, the valve is in a second operational state (e.g., an open state, fully open states, etc.). In other embodiments, in the start position of the piston the valve is in an open state, and in the end position of the piston the valve is in a closed state.

A brake assembly is configured for use with a wheel in an ambient environment. The wheel includes a rim rotatably mounted to an axle. The brake assembly includes a brake stack and an actuation assembly configured to selectively apply a force to the brake stack. A cover sealingly engaged the rim to at least partially define a fluidic barrier between a brake cavity and the ambient environment. The brake stack is located within the brake cavity.

A landing gear system includes a landing gear assembly coupled to a body of a vehicle and configured for reciprocating motion between a retracted position and an extended position. A fail-secure uplock assembly is reciprocal between a locked state and an unlocked state. A first electromagnet and a first permanent magnet are mounted to the body, and a second electromagnet and a second permanent magnet are mounted to a component of the landing gear assembly. The first and second electromagnets generate magnetic fields with reversible polarities. When the landing gear assembly is in the retracted position, the first permanent magnet is attracted to the second permanent magnet. The first electromagnet is attracted to the second electromagnet when the uplock assembly is in the locked state and is repelled by the second electromagnet when the uplock assembly is in the unlocked state.