Reducing Circulation in a Wake Turbulence Behind an Airplane Flying at Low Altitude
AssigneeDeutsches Zentrum für Luft- und Raumfahrt e.V.
InventorsAndreas Schröder, Robert Konrath
Life of this patent
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Abstract
For reducing a circulation of wake vortexes in a wake turbulence behind an airplane flying over ground at low altitude, at least one ring vortex of airflow is generated at the ground on each side of a vertical middle plane of the airplane. Each ring vortex has a vortex axis and a direction of propagation, wherein the vortex axis is oriented at an angle with regard to the ground, and wherein the propagation direction is oriented upwards from the ground; and each ring vortex disturbs at least one wake vortex to induce its decay.
Claims25
A method of reducing a circulation of wake vortexes in a wake turbulence behind an airplane flying over ground at low altitude, the method comprising
- at the ground on each side of a vertical middle plane of the airplane, generating at least one ring vortex of airflow, each ring vortex having a vortex axis and a direction of propagation, wherein the vortex axis is oriented at an angle with regard to the ground, and wherein the propagation direction is oriented upwards from the ground, and each ring vortex disturbing at least one wake vortex to induce its decay.
A method of reducing a circulation of wake vortexes in a wake turbulence behind an airplane flying over ground at low altitude, the method comprising
- at the ground on each side of a vertical middle plane of the airplane, generating at least one ring vortex comprising an ascending airflow in its center, each ring vortex ascending from the ground for disturbing at least one wake vortex to induce its decay, wherein the ring vortexes are generated at the ground below vortex axes of the wake vortexes to be disturbed at a circulation of 10 to 30% of the circulation of the wake vortexes to be disturbed and at such a time that they interact with the wake vortexes to be disturbed at a distance to the airplane of 25 to 30 wing spans of the airplane.
A device for reducing the circulation of wake vortexes in the wake turbulence behind an airplane flying along a runway at low altitude over ground, the device comprising
- at least one ring vortex generator arranged at the ground on each side of the runway, the ring vortex generators being designed and oriented to the ground to generate ring vortexes of airflow having a vortex axis oriented at an angle with regard to the ground and a direction of propagation oriented upwards from the ground.
Dependencies are inferred from the claim text.