PropWings™ Next-Gen Performance for eVTOL Platforms

Votes: 2
Views: 904

What problem does PropWings solve?

The commercial viability of electric Vertical Takeoff and Landing (eVTOL) aircraft is severely bottlenecked by battery energy density limitations. Compounding this is a critical aerodynamic "dead zone" during the transition between vertical hover and forward flight, where conventional fixed wings remain aerodynamically inert until forward momentum is achieved. This forces the electric powertrain to draw immense power to maintain lift, accelerating battery drain, increasing thermal stress, and limiting mission range and load capacity.

How does PropWings work?

PropWings™ is an airframe-neutral aerodynamic architecture integrated directly onto a tilting-nacelle or articulated tilting-motor assembly. It locates aerodynamic surfaces into the fastest airflow zone—the propeller slipstream—to create an "always-on" active-lift environment. The system features auxiliary wings structurally supported by integrated swirl-reduction stator vanes. As the motor/propeller/auxiliary wing assembly tilts from 0° to 90°, the auxiliary wings continuously generate active lift, while the stator vanes intercept the high-velocity, swirling propeller slipstream tube, straightening the airflow to convert wasted rotational kinetic energy into clean axial thrust.

How is PropWings novel or an improvement on current technology ?

Conventional designs treat the airframe and propulsion as isolated systems, leaving wings inert at zero and low airspeed. PropWings introduces a patent-pending, interdependent architecture where the propulsion slipstream actively drives lift and control authority independent of forward airspeed. Instead of treating the auxiliary wing support struts as passive dead weight, PropWings transforms them into dual-purpose structural stator vanes. Because the auxiliary wing and stator vane assembly vectors dynamically with the motor, it enables optimized lift and thrust distribution across hover and cruise regimes, offloading the primary wing to achieve a lower overall vehicle angle of attack and superior net lift-to-drag ratios.

Where would PropWings be applied and what is the market potential?

This technology targets the multi-billion-dollar Advanced Air Mobility (AAM) market, specifically tilting-motor, tilting-nacelle, and Lift + Cruise eVTOL aircraft across air taxi, air ambulance, and cargo delivery sectors, for both commercial and military applications. Delivering a projected 8% to 12% efficiency boost in range or payload with the same battery, PropWings can make marginal regional routes commercially viable. On a typical 4-passenger eVTOL, this could unlock an extra passenger seat—translating to a 25% potential increase in revenue per flight.

Manufacturing, Production Cost, and Public Good:

PropWings features zero moving parts, minimizing maintenance and simplifying certification. Preferably manufactured using aerospace composites, its net lift gains allow aircraft OEMs to design smaller, lighter primary wings, keeping production costs competitive. PropWings advances sustainable, zero-emission transportation. By converting wasted propeller slipstream energy into usable lift and thrust, it reduces power demand to extend battery and motor life. It directly increases safety by eliminating the transitional instability window, providing immediate control authority and response during critical flight phases. Our commercial model is focused on IP licensing, technology development, and specialized aerodynamic consulting to assist licensees and aerospace partners with custom airframe integration. 

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  • About the Entrant

  • Name:
    Lester Erlston
  • Type of entry:
    team
    Team members:
    • Robert Breidenthal
  • Profession:
    Business Owner/Manager
  • Number of times previously entering contest:
    never
  • Patent status:
    pending