THE SUBSTITUTE FOR SPAN
The ultimate solution for aerodynamic drag reduction and wingtip stall resistance

Drag reduction techology based on a new approach. Several parallel blades with specific spacing and angle to the main wing take over the lift of the main wing individually in a turbine grid like manner.

The full scale verified aerodynamic potential at subsonic conditions can be summarized as follows:

  • Induced drag is reduced by the winggrid up to 60%, that corresponds to span efficiencies of up to over 3.0, that means that total drag can be reduced up to 50% depending on velocity and design.
  • The winggrid has two distinct operating regimes:
    - below a critical angle of attack (above a specific design speed) span efficiency is between 2.0 and 3.0 with full winggrid effect.
    - above a critical angle of attack (below a specific design speed) the effect of reduced induced drag fades out, the winggrid operates as a slit wing with very high stall resistance.
    This critical design speed is a function of winggrid geometry.
  • A very high resistance to tip stall is supported by the winggrid, that makes an airplane much safer (good for easy landing with high sinking rate).
  • Simple mission adapted blade configuration are possible efficiently working over the whole mission envelope with a fixed geometry.


full view bottom picture