Ice prevention and removal system for wing

Abstract

The invention discloses an ice prevention and removal system for a wing. The system comprises a wing, wherein an electric heating system is distributed in the leading edge skin of the wing. The systemalso comprises a synthetic jet exciter distributed in the wing, wherein the synthetic jet outlet of the synthetic jet exciter is positioned on the surface of the wing and is positioned on the rear side of the ice prevention area of the electric heating system; and after a synthetic jet in the synthetic jet exciter is injected from the synthetic jet outlet, the synthetic jet mutually acts with water drops on the surface of the wing so as to change the movement trajectory of each water drop. By use of the ice prevention and removal system, the leading edge surface of the wing is heated throughthe electric heating system, so that the leading edge of the wing is kept in a certain temperature range. When cold water drops knock on the leading edge of the wing, since a surface temperature is high, water drops are not iced on the leading edge of the wing but flow form one layer of water film, and the water film flows to the back of the wing. When the water film flows to the synthetic jet outlet, due to the function of the synthetic jet, the water film changes an original movement locus so as to be far away from the rear surface of the wing, the formation of overflowing ice is avoided, and the aerodynamic performance and the safety performance of the wing are improved.

Description

technical field [0001] The invention belongs to the technical field of aircraft anti-icing, in particular to a wing anti-icing system. Background technique [0002] When an aircraft flies in a cloud layer containing supercooled water droplets, the surfaces of the aircraft's wings, empennage, rotors, air inlets, radome, instrument sensors and other components are prone to icing. The icing of the aircraft not only increases the weight of the aircraft, but also destroys the aerodynamic shape of the aircraft surface, changes the flow field around the aircraft, reduces the maximum lift-to-drag ratio of the aircraft, and reduces the stall angle of attack, which affects the maneuverability and stability of the aircraft. cause safety accidents. [0003] Existing anti-icing technologies mainly include hot gas anti-icing, electric heating anti-icing, pneumatic belt de-icing, liquid anti-icing and so on. The hot gas protection system requires a large amount of hot gas from the aircra...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the problem that the existing anti-icing system tends to form overflow ice on the rear side of the protection area during the anti-icing process, which seriously affects the aerodynamic characteristics of the wing and causes serious harm to the safety of the aircraft, a new method is proposed. Wing Anti-Icing System

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