The FeTu Roticulating System

The FeTu™ Roticulating™ system is a new and entirely novel energy architecture targeting mass cross-sector decarbonisation.  This ‘Positive Displacement Low-Velocity Turbine’ (PDLVT) combines the best attributes of, radial, axial and reciprocating technologies into a single high-efficiency solution.  

Its beautiful elegance uses one part to control a single spherical rotor which moves in 3D space enabling precise & simultaneous management of four volumetric chambers.  With only one of its ‘two moving part’ design defining chamber movement, it is perceived as the world’s first ‘quad-acting’ device, offering four discreet chambers defined by a single set of mechanical constraints.

Translating energy seamlessly and continuously between rotational and volumetric sources, FeTu has applications in power generation, pumping, compressing, expanding and thermal propulsion.  Akin to a human heart, the unique twin-entry / twin-exit design allows differential activities, pressures or flows within the same unit and provisions a closed-loop Green Energy harvesting platform with a high degree of thermal reversibility; perceived by many as the key to unlocking large-scale sustainable energy from solar and geothermal heat sources.   Exciting open-loop potential also offers efficient and clean portable power generation to overcome range anxiety and ‘on the fly’ recharging of electric vehicles and mobile transport systems.

Being a design of their own creation FeTu have freedom to operate & exclusivity over the Roticulating principle, assured by granted patent & PCT entering its national phase in the top 20 manufacturing economies.

The Facts: In 2016 early bench testing of the Roticulating principle demonstrated capability as a liquid pump, a compressor and a vacuum driven turbine.  With eighteen identified applications which span the worlds entire energy infrastructure, adopting 'compressor' as the first vertical proved the optimal route to market, the intervening time dedicated to its technical advancement & commercialisation.  A prototype (compressor) has been independently tested at the University of Bath, demonstrating a device with step-change capability.

Mechanical Overview

Roticulation can outperform technically complex machines which utilise many hundreds of parts (a car engine being a good example), yet itself has only two moving parts, consisting of:

  • A drive shaft - which delivers or extracts rotational power from the rotating internals.
  • A rotor - linked to the drive shaft it simultaneously rotates and articulates in a predictive and controllable fashion. The rotor oscillates in such a way that two pairs of antiphase chambers systematically expand and collapse, provisioning absolute chamber evacuation.

The design describes four discreet positive displacement chambers (akin to reciprocating engine), two in each half of the machine, which are each dual-acting, enacting the complete cycling of the four chambers in one 360° revolution. Ports in the outer casing allow for controlled entry/exit of fluid media and the rotors proximity at the appropriate phase negates the need for valving.  The seamless presence of the subsequent chamber enables the device to operate in a continuous fluid manner (akin to a turbine).  Its chamber walls do not make contact and offer no potential for wear or inefficient friction.