The inner and outer conic helix may start at the same longitudinal position along the axis of rotation of the rotor before extending along the direction of the axis of rotation of the rotor. Since the generators 13 in this embodiment are mounted on a block 12 with a surface parallel to the inner surface of the inner cone 3 the generators 13 can be moved along the surface by appropriate frame and stepper motors 14. The generators 13 can be secured to a common movable frame assembly or be separately moved along the frustum surface by stepper motors triggered by hard wired or wireless monitoring equipment and/or CPU so that the two-stage rotor apparatus is able to respond to changes in the rotational speed of the rotors 7, 8 and adjust the longitudinal position of the generators along the frustum.
Dolor Neuropático Crónico
The fixed motor mounts 12 are attached to the fixed shaft 11 within the rotors 7 and 8. This provides a mounting area for multiple low torque, high speed, high efficiency generators 13. The generators 13 are driven by the internal revolving surface of the inner cone 3 of the rotors 7, 8 by appropriate gearing.
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However, in this embodiment the blades at the large diameter end are not arranged for solely axial flow, but instead may be adapted to receive or expel fluid flowing with a radial component to its movement. However, it is equally feasible to construct the rotor by way of a non-linear increase in inner and outer radii r with the polar coordinate θ through the use of a different underlying mathematical spiral such as Archimedean, Euler, Fibonacci, Hyperbolic, Lituus, Logarithmic, Theodorus or any other known spiral having varying radius r as a function of the polar coordinate θ but also having a third variable, the length l, varying also as function of the polar coordinate θ. However, the conic helix could alternatively be based on Euler, Fibonacci, Hyperbolic, Lituus, Logarithmic, Theodorus or any other known spiral having varying radius r as a function of the polar coordinate θ but also having a third variable, the length l, varying also as function of the polar coordinate θ.
For the reasons discussed above, it is apparent that an underlying spiral possessing a more rapid change in inner and outer radius r with the polar coordinate θ would induce a more rapid rate of change of momentum necessarily resulting in an increased hydrodynamic reaction force. With this arrangement when an outer rim of the rotor is present it naturally encloses an opening that has an axial component of the flow for fluid to flow through the opening.