Electromagnetic Wave Absorption Heating Sandwich Composite for Wing Anti-Icing
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Solution Overview
Problem
Conventional methods for preventing aircraft surfaces from freezing, such as chemical or mechanical anti-icing methods, require continuous maintenance and increase structural weight, while electrothermal methods using surface-modified carbon fiber or conductive nanoparticles face challenges in mechanical and electrical property heterogeneity and difficult fabrication.
Innovation Solution
A multi-functional heating sandwich composite based on electromagnetic wave absorption technology, featuring a face skin and a honeycomb core with metal electroless plated dielectric fibers, which absorbs electromagnetic waves and converts their power loss into thermal energy, reducing reflected waves through impedance changes, allowing for high-speed heat control and selective heating in large wing structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If chemical or mechanical anti-icing methods are used, then the surface freezing problem is addressed, but continuous maintenance is required and structural weight increases
Solution Approach 1:
The patent replaces chemical and mechanical anti-icing systems with an electromagnetic wave absorption heating system. The composite material absorbs electromagnetic energy and converts it to thermal energy, eliminating the need for chemical fluids and mechanical removal systems, thereby reducing structural weight while maintaining anti-icing functionality
Solution Approach 2:
The patent changes the physical state and properties of the anti-icing system from external chemical/mechanical applications to an integrated thermal field system. By controlling electromagnetic wave absorption parameters and thermal conversion efficiency, the system achieves anti-icing through localized heating without adding significant weight
2Temperature
If surface-modified carbon fiber or conductive nanoparticles are used for electrothermal heating, then heating function is achieved, but mechanical and electrical properties become heterogeneous and fabrication becomes difficult
Solution Approach 1:
The patent employs a composite sandwich structure consisting of face sheets and honeycomb core filled with electromagnetic wave absorbing materials. This composite design integrates heating functionality while maintaining homogeneous mechanical properties and simplifying fabrication compared to modifying individual fibers or nanoparticles
Solution Approach 2:
The patent divides the heating system into distinct functional layers: face sheets for structural integrity and electromagnetic wave absorption, and honeycomb core for thermal conversion and insulation. This segmentation allows independent optimization of each component and simplifies the overall fabrication process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite achieves lightweight construction, selective heating, and maintains structural robustness by generating heat only in areas needing it, with efficient temperature control through adjustable antenna distance, and demonstrates increased heating performance without compromising mechanical strength.
Implementation Method 1
a face skin formed to a predetermined thickness on the top or bottom of the composite to absorb electromagnetic waves applied from the outside
Implementation Method 2
a honeycomb core that converts the power loss of electromagnetic waves penetrating from the face skin into thermal energy
Implementation Method 3
the honeycomb core reduces reflected electromagnetic waves by dissipating the electromagnetic waves through periodic changes in impedance in a preset target frequency band
Implementation Method 4
metal electroless plated dielectric fibers having electrical conductivity
Data Source
AI summary
The present disclosure relates to a multi-functional heating sandwich composite based on electromagnetic wave absorption technology applicable to large wing structures and a method for manufacturing the same, and particularly, to a composite based on an electromagnetic wave absorption heating mechanism, which converts electromagnetic waves into thermal energy in order to solve the freezing problem, and a method for manufacturing the same. The present disclosure provides a multi-functional heating sandwich composite based on electromagnetic wave absorption technology applicable to large wing structures, including: a face skin formed to a predetermined thickness on the top or bottom of the composite to absorb electromagnetic waves applied from the outside; and a honeycomb core that converts the power loss of electromagnetic waves penetrating from the face skin into thermal energy and is formed in the shape of a hexagonal pillar with a predetermined thickness using metal electroless plated dielectric fibers having electrical conductivity, wherein the honeycomb core reduces reflected electromagnetic waves by dissipating the electromagnetic waves through periodic changes in impedance in a preset target frequency band.