Abstract: A launch vehicle dispenser attach structure is disclosed. The launch vehicle dispenser attach structure includes a launch vehicle adapter, and a polygonal extruded cylinder comprising tapered side and an essentially closed end. The polygonal extruded cylinder connects to the launch vehicle adapter. The tapered sides and the closed end of the polygonal extruded cylinder provide mounting interfaces for connecting satellite dispensers. A mounting interface of the mounting interfaces includes a separation ring for transforming the launch vehicle dispenser attach structure into a free flying satellite. The launch vehicle dispenser attach structure is particularly useful for attaching multiple payload separation systems to launch vehicle.

Abstract: Apparatus and method for detecting and compensating for lubrication disturbance (lube disturb) events on a rotatable data recording medium. In some embodiments, a lube disturb event is detected responsive to displacement of a data transducer away from a first memory location on a rotating data recording medium during a write operation to write data thereto. The lube disturb event arises responsive to a transfer of accumulated contamination from a data transducer to a lubrication layer on the rotating data recording medium and a smearing of the transferred accumulated contamination along the first memory location. The write data are stored to a different, second memory location instead of to the first memory location responsive to the detected lube disturb event.

Abstract: Disclosed herein is a lightweight, self-propelled, hand-guided sweeping apparatus for removing debris lying on the ground, the apparatus comprising: a chassis having wheels with ground engaging flotation tires; a hopper compartment mounted pivotally on the chassis to tilt upwardly and rearwardly about the pivotal connection to dump, by gravity, its debris content; tilting structure for tilting the hopper compartment about the pivotal connection; rotary brush structure for engaging and sweeping the ground surface, the brush structure being mounted integrally, horizontally and rotatively on the hopper compartment and being open to the hopper compartment to propel the debris inside the hopper compartment as the brush structure rotates; drive structure, fixedly mounted to the chassis, for selectively driving: at least one of the wheels, the tilting structure, the rotary brush structure; control structure, mounted to the chassis, for hand-guiding sweeping apparatus and selectively operating the drive structure; wh