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An anti-icing aircraft fairing leading edge

A fairing and leading edge technology, applied in the field of the leading edge of an anti-icing aircraft fairing, can solve problems such as the inability to fully meet the safety requirements of anti-icing on the surface of the aircraft

Active Publication Date: 2015-08-05
LIYANG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of most of the current low surface energy hydrophobic coatings cannot fully meet the safety requirements for anti-icing of aircraft surfaces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Cowl leading edge assembly according to the present invention comprises cowling leading edge shell and is positioned at the anti-icing coating of housing exterior, and this anti-icing coating comprises primer and finish paint, and described primer is epoxy polyurethane primer, The top coat is organic fluorosilicon modified acrylate paint. Preferably, the dry film thickness of the primer and topcoat is 23 microns and 43 microns, respectively. Preferably, the front edge of the fairing referred to in the present invention refers to the front part of the fairing projected on the front 1 / 5 range of the chord length. More preferably, the thickness of the anti-icing coating on the leading edge shell is not uniform, for example, gradually becomes thinner from the front end of the fairing to the rear, or gradually becomes thicker and then gradually thinner, which can not only improve the anti-icing characteristics but also reduce the Little effect on fairing aerodynamics.

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Abstract

An anti-icing aircraft fairing leading edge comprises a fairing leading-edge housing and an anti-icing coating positioned outside the housing. The anti-icing coating comprises a primer and a finish paint. The primer is an epoxy polyurethane primer. The finish paint is an organic fluorine-silicon modified acrylate coating. Dry film thicknesses of the primer and the finish paint are respectively 23 micrometers and 43 micrometers. The organic fluorine-silicon modified acrylate coating comprises: by weight, 55-65% of organic fluorine-silicon modified acrylic resin, 20-25% of pigment and filler, 3% of nano-calcium carbonate, 3% of nanometer magnesia, 1% of a levelling agent, 0.8% of an antifoaming agent, 1.2% of a dispersant, 0.5% of a catalyst and 3-5% of a solvent. According to the aircraft fairing leading edge, formation of an ice layer on the fairing leading edge can be minimized effectively. In addition, the aircraft fairing leading edge is beneficial to shedding of an ice layer which has already formed.

Description

technical field [0001] The invention relates to a leading edge of an anti-icing aircraft fairing. Background technique [0002] In today's world, airplanes have gradually become a means of transportation that people pay more and more attention to because of their fast and safe features. However, when the aircraft flies at subsonic speeds below a certain critical Mach number in icing weather conditions, the windward surfaces of some components, such as the leading edge of the fairing, will freeze due to the impact and accumulation of water droplets in the atmosphere. A large number of accidents and studies have shown that even a small amount of ice accumulation on key parts of the aircraft will lead to a decrease in the lift of the aircraft and an increase in flight resistance, which will lead to deterioration of the aerodynamic qualities of the aircraft such as maneuverability and stability. Especially when the aero-engine is under a certain temperature and humidity on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B33/00B32B27/06B64C1/00C09D151/08C09D7/12C08F283/12
Inventor 张俊
Owner LIYANG TECH DEV CENT