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Anti-icing aircraft engine lifting bracket leading-edge

A technology for engine hangers and aircraft engines, which is applied to aircraft parts, fuselages, coatings, etc., and can solve problems that cannot fully meet the safety requirements of aircraft surface anti-icing and deicing

Active Publication Date: 2014-02-19
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 engine pylon leading edge assembly according to the present invention comprises an engine pylon leading edge housing and an anti-icing coating on the outside of the housing, the anti-icing coating comprises a primer and a top coat, the primer is a water-based iron epoxy The red primer and top coat are organofluorosilicon modified acrylate paints. Preferably, the dry film thickness of the primer and topcoat is 21 microns and 50 microns, respectively. Preferably, the front edge of the engine pylon referred to in the present invention refers to the front part of the pylon 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 hanger to the rear or gradually becomes thicker and then gradually thinner, which can not only improve the anti-icing characteristics but also reduce the Small impact on hanger aerodyna...

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Abstract

An anti-icing aircraft engine lifting bracket leading-edge comprises an engine lifting bracket 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 a waterborne iron-red epoxy primer. The finish paint is an organic fluorine-silicon modified acrylate coating. Dry film thicknesses of the primer and the finish paint are respectively 21 micrometers and 50 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 nano-zinc oxide, 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 engine lifting bracket leading-edge, formation of an ice layer on the engine lifting bracket leading-edge can be minimized effectively. In addition, the engine lifting bracket 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 engine hanger. 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 engine pylon, 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 h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00B32B27/06B64C1/16C09D151/08C09D7/12C08F283/12
Inventor 张俊
Owner LIYANG TECH DEV CENT