Abstract: An automated aircraft towing vehicle system for use with aircraft is provided. When coupled to an aircraft the towing tractor vehicle facilitates the movement of the aircraft without the requirement for use of the aircraft's jet engines. The towing vehicle system comprises a towing tractor vehicle having remotely controllable steering, braking, and acceleration. The remote system controller is located in the aircraft being towed such that the pilot of the aircraft being towed is capable of controlling the starting, stopping and steering of the towing tractor vehicle. The towing tractor vehicle further includes a remotely controllable de-coupling means. When the aircraft is towed to the desired location, the decoupling of the aircraft from the towing tractor vehicle is controllable by the remote system controller.

Abstract: This invention relates to apparatus and methods for the disinfection of fluids and, in particular, to the disinfection of industrial fluids with ultraviolet radiation. These fluids are typically used in manufacturing as coolants in both long and short assembly lines. They commonly accumulate contaminants from multiple and diverse sources including oil and microorganisms. Fluids can be disinfected by establishing a fluid flow rate sufficient to prevent occlusion of the walls of the ultraviolet transmissible portion by contaminants. Fluids may be so heavily contaminated so as to require removal of at least a minimum percentage of contaminants (MPC) prior to irradiation. Such fluids may be processed to remove the minimum percentage of contaminants according to the equation: MPC=102-(23.45.times.lnV).