Smart and efficient fans, propellers, rotors and turbines using KuttaFoil energy efficient wavy wing and blade technology


The KuttaFoil wavy wing/blade configuration provides an innovative solution to the market need to improve the efficiency and reduce noise characteristics of fans, propellers, rotors and turbines. KuttaFoil delivers improved efficiency and reduced noise by the use of spanwise waviness of the wings/blades which can take several forms to suit the application. Based on our research to date, efficiency gains of up to 20% could be expected, with reduction in tonal noise up to 32dB at one tonal frequency and 8 dB in broadband noise.

The wavy-wing technology is one that was inspired by nature, biomimetic in its basis, but informed by theory and inventively improved and perfected by experiment. KuttaFoil has the potential to change the way we think about and build aerodynamic lifting surfaces. The waviness can take several forms and may include variations in the angle of attack, mean curvature or leading edge sweep, or a combination thereof. This family of modifications leads to delayed stall, increased lift, decreased drag and decreased aerodynamic noise; aerodynamic features that have been the focus of thousands of researchers over the last century. 

The economic and social impacts of this invention are quite profound, including the practical greentech goal of reducing energy consumption for all types of fans in transport, home and industry, and in the reduction in aerodynamic noise produced by fans of all sizes and types. Both are environmental goals, as noise is one of the more subtle forms of pollution. The technology also offers the possibility of reducing the cost of fabrication of fan blades in many situations, allowing efficient blades to be fabricated from sheet metal rather than from expensive casting processes. Suitable applications of wavy wing/blade configuration are aircraft and water craft of any size, wind and water turbines, racing car lifting surfaces, submarines, yachts, ships, fans, HVAC turning vanes, gas turbine rotors and stators, surfboards, bicycle frames and components, and aeronautical applications where short take-off or landing at slower speed is needed.


Market sectors for which Kutta Foil provides value-added solutions:


- Consumer applications such as CPU cooling fans, ceiling fans, automotive ventilation fans

- Industrial applications such as industrial fans, air moving fans, HVAC turning vanes, exhaust fans

- Energy applications such as wind turbines, water turbines, gas turbine rotors and stators

- Sports applications such as surfboards, windsurfers, waveriders, paragliders, race car lifting surfaces and bicycle frames and components

- Defence applications such as submarine lifting and control surfaces, ship lifting and control surfaces, UAVs and high manoeuvrability aircraft

- Aircraft applications such as aircraft lifting surfaces and helicopter blades


IP Position

A PCT patent application entitled Improved Wing Configuration has been filed or this invention. The IP is wholly owned by Adelaide Research & Innovation Pty Ltd.


Partnering Opportunities

Seeking expressions of interest and enquiries from development partners and/or prospective licensees in any of the above fields of application.


Patent Information:
For Information, Contact:
Kiara Bechta-Metti
The University of Adelaide
Richard Kelso
Aeronautical Engineering
Civil Engineering
Green Tech
Maritime Engineering
Mechanical Engineering