Abstract: A powered clutch actuator assembly for integration with a clutch assembly is provided. The actuator and clutch assemblies, sized to fit within constraints of an aircraft landing gear wheel-mounted taxi drive system, are engineered to occupy a default neutral disengaged position that prevents torque transfer when torque to move the aircraft should not be transferred to the taxi drive system. Multiple solenoids and diodes power rotational motion of the actuator assembly to move a bi-directional clutch component in a desired rotational direction during torque transfer. A locking solenoid automatically locks and maintains the actuator assembly in a neutral disengaged condition when none of the solenoids are powered and disengages the actuator assembly when one solenoid is powered to cause rotation of the actuator assembly. Solenoid supports structured to operate as integral heat sinks may direct heat to an on-aircraft heat sink, prolonging the working life of the actuator assembly.

Abstract: An apparatus and associated method is provided for holding an inner race of a bearing stationary with respect to rotational movement while leaving a hub that is fixed in rotation with an outer race of the bearing unencumbered. The hub is excited by contactingly engaging it with a predetermined mechanical force. The resonance response of the hub to the excitation is determined and used to characterize the bearing qualitatively.

Abstract: A case for packaging and storing a magnetic disk cartridge is disclosed. The case includes a tray that slides into a housing, and a seal between the tray and the housing. The seal protects the cartridge from dust and contaminant infiltration and from physical damage. The tray forms a receptacle for receiving and holding the cartridge and includes a hinge for enabling a front portion of the tray to pivot downward to provide clearance to insert and remove the cartridge by sliding therein. The case includes a latching means for latching the tray and housing together, a transparent panel for viewing the cartridge while it is inside of the case, a clasp that prevents the tray from being fully removed from the housing, and unique key members that mate to corresponding key grooves in a JAZ cartridge.