Ceramic Heater Connector Structure for Thermal Expansion Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing connectors for air data probes face challenges in maintaining a reliable connection between the transducer and the heater, especially in cold and icing conditions, due to heat dissipation issues and thermal expansion.
Innovation Solution
A connector design featuring a ceramic insert, Alumel® sockets, and an annular lip on each tine to dissipate heat and prevent thermal expansion, ensuring a secure connection even in high-temperature environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connector is used to transport current from the transducer to the heater in air data probes, then the heater can function to prevent icing, but the connection between the transducer and heater becomes difficult to maintain due to thermal expansion and heat dissipation issues
Solution Approach 1:
A ceramic insert is introduced as an intermediary component between the metal parts of the connector. The ceramic material serves as a thermal break that reduces heat transfer and thermal expansion effects, while still allowing electrical current to pass through to the heater, thus maintaining connection reliability in thermal environments
Solution Approach 2:
The connector design changes the thermal parameters by using materials with different thermal properties. The ceramic insert has low thermal conductivity compared to metal, creating a thermal barrier that reduces heat dissipation and minimizes thermal expansion effects on the connection between transducer and heater
2Reliability
If heaters are positioned within air data probes to ensure proper function in icing conditions, then the probe can operate in cold and icing conditions, but the connector experiences thermal stress and expansion that compromises connection stability
Solution Approach 1:
The ceramic insert acts as a thermal mediator that allows the heater to function at elevated temperatures while protecting the connector from excessive thermal stress. The ceramic material's low thermal conductivity creates a thermal gradient that protects the connection components from thermal stress and expansion
Solution Approach 2:
The connector uses a composite structure combining metal components (for electrical conductivity and mechanical strength) with a ceramic insert (for thermal isolation). This composite design allows the heater to operate in high-temperature icing conditions while the ceramic protects the metal connector from thermal stress and expansion
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 connector effectively dissipates heat and prevents thermal expansion, maintaining a reliable connection between the transducer and the heater, thus enhancing the robustness and reliability of air data probes in harsh conditions.
Implementation Method 1
A connector design featuring a ceramic insert, Alumel® sockets, and an annular lip on each tine to dissipate heat and prevent thermal expansion
Data Source
AI summary
A connector includes a shell, an insert that fits within the shell, and a socket that extends within the insert. The socket includes a hood, a body within the hood, an annular tine extending from the body within the hood, an annular lip extending around the tine adjacent an end of the tine, and a cavity formed within the tine.