Airflow separation control device for high angle of attack flight based on air grille system between wings

Abstract

The invention discloses an interplane air grid system based large angle-of-attack flying airflow separation control apparatus. The control apparatus comprises an angle-of-attack sensor, a pressure sensor, a flying control system and an air grid system, the air grid system comprises skin assemblies arranged on the upper and lower surfaces of the air grid system, and an air grid assembly arranged in the air grid system, the skin assembly of the air grid system is started after the flying control system determines that an aircraft enters large angle-of-attack flight according to the sensing information of the angle-of-attack sensor and the pressure sensor and airflow separation is carried out, and simultaneously the air grid assembly of the air grid system is started as needed to deflect the air grid separator in order to provide lateral control force. The apparatus can improve the air streaming characteristic according to an assigned rule under an aircraft large angle-of-attack flying condition, and is suitable for a plurality of angle-of-attack states; and the apparatus can provide new direct lateral control force under large angle-of-attack flying and reduced even failed rudder and vertical tail conditions, and can be used for changing the attitude and state in the large angle-of-attack flight to improve the mobility and agility of the aircraft.

Description

technical field [0001] The invention belongs to the technical field of aircraft design, and relates to a high-angle-of-attack flight airflow separation control device. A deflectable air grid partition is arranged inside the wing to affect the surface of the wing and the flow of the internal airflow, so as to delay stall and provide lateral power purpose. Background technique [0002] High angle of attack flight maneuverability is one of the basic requirements for the design of a new generation of aircraft. The primary problem facing maneuvering at high angles of attack is the sudden drop in lift-to-drag ratio caused by airflow separation, that is, the "stall" problem. How to delay or control airflow separation has always been a research hotspot in the field of aerodynamics. The methods and technologies adopted at present mainly include "leading edge flap", "front canard", "wing side strip", setting "pelvic fin", "asymmetrical vortex single hole micro blowing", "airfoil blo...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that airflow diversion of traditional wings affects aerodynamic characteristics when flying at high angles of attack, and proposes a high-angle-of-attack flight airflow control device based on the inter-wing air grid system, which improves the air flow characteristics of aircraft flying at high angles of attack. And provide direct control of lateral force for aircraft maneuvering at high angles of attack

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