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An ice protection nose leading edge assembly

A nose and leading edge technology, which is applied in the field of ice protection nose leading edge components, can solve problems such as the inability to fully meet the safety requirements of anti-icing on the surface of aircraft

Active Publication Date: 2015-11-25
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] The nose leading edge assembly according to the present invention comprises a nose nose shell and an anti-icing coating positioned on the outside of the shell, the anti-icing coating comprises a primer and a finish paint, and the primer is an epoxy acrylic water-based primer , The top coat is organic fluorine silicon modified acrylic paint. Preferably, the dry film thickness of the primer and topcoat is 26 microns and 47 microns, respectively. Preferably, the leading edge of the nose referred to in the present invention refers to the front of the nose 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 nose or gradually becomes thicker and then gradually thinner, which can not only improve the anti-icing characteristics but also reduce the Little impact on the aerodynamic performance of the nose.

[0021]...

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PUM

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Abstract

An ice protection nose leading-edge assembly comprises a nose 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 acrylate waterborne primer. The finish paint is an organic fluorine-silicon modified acrylate coating. Dry film thicknesses of the primer and the finish paint are respectively 26 micrometers and 47 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 nanometer aluminium oxide, 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 nose leading-edge assembly, formation of an ice layer on the nose leading-edge can be minimized effectively. In addition, the nose leading-edge assembly is beneficial to shedding of an ice layer which has already formed.

Description

technical field [0001] The invention relates to an ice protection nose leading edge assembly. 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 nose, 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 ground ...

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