Anti- Vortex system- is recently being invented and is under test by Boeing.
The tests for the same are being carried out on a B757 type aircraft.
As we know that the Wing Tip Vortices are a rotor type airflow generated by a heavy A/c, which cause potential threat to medium and small size a/c approaching or taking off behind the heavy a/c.
Since we know that the effect of Wing Tip Vortices is more at higher Angle of Attacks and lower airspeed range, the intensity of Wing Tip Vortices can be hazardous for Aircraft operating at high angles of attack and low airspeeds, which usually occur when aircraft is at a lower altitude and on Approach for a Landing or in Takeoff configuration.
The purpose of this invention is to reduce the Wing Tip Vortices.
The system uses the control surfaces to “slosh the span load”.
The principle is to distribute the span wise pressure on the wing span by means of aileron movement, which causes vortices to change their direction on being generated from the wings.
The outboard aileron (low speed) aileron will deflect symmetrically up and down, whereas the inboard aileron (high speed aileron) will deflect symmetrically down and up acting opposite to outboard ailerons, this cycle causes vortices to combine and finally canceling out the rotors that are created behind the a/c.
The movement of this aileron movement will cause a sudden change in pitch movement due to the changing centre of lift over the swept wing. To counteract this elevator will have automatic sensors that will activate elevators movement to dampen the pitching moment oscillations.
Span loading will be uniformly “sloshed out” from inboard to outboard & vice versa.
This cycle will be repeated continuously during approach and while taking off, generating the span loading instability and defusing the vortices.