Ground intervention device for accelerating aircraft wake flow dissipation

Abstract

The invention discloses a ground intervention device for accelerating aircraft wake flow dissipation, which comprises plate line systems which are arranged in parallel, obvious secondary vortexes aregenerated under the action of plate lines according to comparison of vorticity vector diagrams under the action of a plate-line-free system and the plate line systems, and due to the fact that tangential airflow of the wake vortexes is blocked and segmented, turbulent kinetic energy of the trailing vortex is disturbed and restrained, meanwhile, downwash airflow of the trailing vortex is blocked between a plate line and the ground, the speed and direction of the airflow are changed, a main vortex of the trailing vortex deforms, a secondary vortex is induced to be separated out, an interferencedragging effect is generated on the main vortex, and strength attenuation and dissipation of the vortex are intensified, according to the plate line system, the trailing vortex dissipation speed can be increased, the influence of the wake flow on the rear aircraft is reduced, so that the wake flow interval is reduced, the airport capacity and the airspace use efficiency are improved, and the increasing air transportation requirements are met.

Description

technical field [0001] The invention relates to the technical field of aircraft ground devices, in particular to a ground intervention device for accelerating the dissipation of aircraft wake. Background technique [0002] Wakes are long-duration swirling airflows produced by every aircraft. They are formed by air "rolling" over the wingtips as it moves from the high-pressure area below the wing to the low-pressure area above. These powerful vortices can have severe effects on aircraft following them, as well as damage to ground structures. When the aircraft generates lift, the pressure difference between the upper and lower wing surfaces will cause the airflow to flow from the lower wing surface around the wingtip to the upper wing surface, thus forming a pair of counter-rotating vortices at the wingtips, usually called wake vortices. The entire process of development and change is called a wake. Wake turbulence poses a threat to the safety of aircraft following behind t...

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