Aerodynamic Probe Heating With Bridged Coiling for Icing Control
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Solution Overview
Problem
Existing heating wire coiling methods for aerodynamic probes in aircraft are inefficient and prone to overheating, corrosion, and reduced service life due to empty spaces and double thicknesses, which affect deicing performance and measurement accuracy under icing conditions.
Innovation Solution
A bridged back-and-forth coiling method with a bridge overlapping heating wire turns near the open end of the tube, ensuring even spacing and single thickness contact with the tube surface to enhance heating density and minimize heat loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heating wire is wound in conventional coiling methods, then heating function is provided, but empty spaces and double thicknesses cause overheating and reduced service life
Solution Approach 1:
The patent applies local quality by creating a bridge structure at specific locations (open ends of tubes) where heating density is increased through overlapping wire turns. This localized enhancement of heating quality at critical areas prevents icing without requiring uniform overheating throughout the entire probe, thereby improving reliability while maintaining effective deicing performance.
Solution Approach 2:
The patent transitions from conventional two-dimensional planar coiling to a three-dimensional bridged structure where wire turns overlap and extend in multiple dimensions. This dimensional change allows the heating wire to fill empty spaces and eliminate double thicknesses by creating a立体 (spatial) distribution pattern that improves temperature uniformity and prevents overheating.
2Reliability
If heating wire coiling covers critical zones, then deicing performance is improved, but heat loss increases and probe overheating occurs
Solution Approach 1:
The bridge structure concentrates heating capacity at critical open ends where icing most frequently forms. By providing enhanced heating only at these specific locations rather than uniformly throughout the probe, the system achieves effective deicing performance while minimizing unnecessary heat generation and energy loss in non-critical areas.
Solution Approach 2:
The patent applies partial action by providing excessive heating capacity (overlapping turns) only at critical zones that require it most, rather than applying uniform heating throughout. This selective concentration of heating action ensures deicing effectiveness at vulnerable areas while avoiding excessive heat loss and overheating in other parts of the probe.
3Power
If heating wire is densely wound, then heating density increases, but manufacturing complexity and heat loss increase
Solution Approach 1:
The patent segments the coiling structure into distinct sections: standard spaced turns in non-critical areas and bridged overlapping turns at critical open ends. This segmentation allows simple manufacturing for the majority of the wire length while providing enhanced heating density only where required, thereby reducing overall manufacturing complexity compared to uniformly dense winding throughout the entire probe.
Solution Approach 2:
The bridged coiling structure provides locally enhanced heating quality at critical open ends through controlled overlapping turns. This localized approach to increasing heating density avoids the need for complex dense winding throughout the entire probe, maintaining manufacturing simplicity while achieving high heating power density where it is most needed for effective deicing.
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
Improves deicing performance at the critical open end of probes without overheating, reducing heat loss and maintaining probe integrity, thus ensuring accurate measurements under icing conditions.
Implementation Method 1
heating is in most cases carried out by means of one or more heating wires wound and embedded in the appendages, the heating taking place by the Joule effect
Data Source
AI summary
The invention relates to measuring equipment, comprising a heating device, and intended to be arranged externally, at the skin of a vehicle which can move in a hostile climate environment with icing climate conditions, said equipment corresponding to a body consisting of a mast supporting a tube closed at one of the ends thereof, the heating device being intended to be housed within said tube and comprising at least one heating wire coiled inside the body of said tube, according to a bridged coiling defined by the presence of a bridge (P), the bridge corresponding to a portion of heating wire overlapping, along the axis of said tube, a predetermined number of turns of the end of said coiling located near the open end (12) of said tube, the overlapping turns being evenly spaced at a predetermined pitch associated with the overlapping zone.