Abstract:
A ground propulsion assembly for an aircraft includes an axle, a wheel rotatably connected to the axle, and a transmission. The transmission includes a housing mounted proximate the axle and a drive element disposed at least partially outside of the housing and operatively connected to a power input. A disengagement spring is disposed between the transmission and the axle and the disengagement spring is configured to urge the drive element out of engagement with the wheel. An actuator is operatively connected between the transmission and the axle, the actuator being configured to selectively generate a force in opposition to the disengagement spring such that the drive element moves relative the wheel and operatively engages the wheel to transfer torque to the wheel.
Abstract:
An electro-mechanical actuator with wide operating range load includes a shaft and a speed summed differential coupled to rotate the shaft. A prime mover is coupled to the speed summed differential and is configured to react to an output torque of the screw shaft. A torsional spring coupled to the speed summed differential by way of a rotary position sensor for detecting the rotation of the screw shaft thereby measuring the output torque of the shaft for control of the prime mover.
Abstract:
A method for handling a bearingless machine into a driveline includes coaxially aligning a rotor subassembly and a stator subassembly such that first and second circumferential track portions define a substantially complete first circumferential track in communication with a first portal. A first fixture band is inserted into the first circumferential track via the first portal to substantially maintain axial and radial alignment of the rotor subassembly relative to the stator subassembly.