Abstract: A radial turbine blade system comprised of airfoils forming a circular array on a disk or series of disks around a central opening which serves as the exhaust outlet. Single or multiple sections comprised of a circular array of airfoils on a disk are arranged along the central axis. Nozzles direct high velocity mass flow fluids between the disks and onto the leading edges the airfoils. Three forces are used to convert the high velocity mass flow to mechanical output. First, is the shock effect of high velocity particles striking the leading surface of the airfoils. Second, is the lift force vector produced by the fluid flow over the airfoils. Third, is the fluid motive force of the high velocity mass flow contacting the inner walls of the disks. The invention can utilize various types of fluid forces such as gasses produced from the combustion of fuel or steam.