A free layer structure is provided for a spin valve sensor which has a nickel iron based layer and a ferromagnetic oxide layer wherein the cobalt iron oxide layer permits a thin nickel iron layer to be employed while maintaining a desired magnetic softness of the free layer structure and a desirable magnetoresistance of a spin valve sensor. The motor control system also includes at least one motor driver coupled to the intermediate power link configured to provide power to one or more motors and a controller coupled to the power converter and the at least one motor driver. The deck is adjustably hinge mounted to the inner chamber supporting sidewalls extending in a decline from a waste material entrance to a charred material exit. A fuselage-mounted top hook snags a horizontal cable and the arresting forces act in the plane of symmetry through the central structure of the UAS.