Ram Air Radome Cooling for Radar Components
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Solution Overview
Problem
Electronically Scanned Array (ESA) radar systems generate excessive heat due to their antenna usage, leading to potential performance deterioration and malfunction if not properly cooled, and existing cooling methods like coolant-based refrigeration require complex compression and routing systems, which are impractical for aircraft integration.
Innovation Solution
A radome design featuring a ram air inlet aft of the outlet, allowing air to circulate and cool radar components within the housing, eliminating the need for complex cooling systems by leveraging the aircraft's motion to induce airflow for cooling, with optional features like NACA ducts, filters, and recirculation fans to enhance air circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant-based refrigeration or pressurized air recirculation is used to cool radar components, then the working temperature of radar components is maintained, but the device complexity increases due to required compression and routing systems
Solution Approach 1:
The radome housing utilizes the natural motion of the aircraft to generate airflow that cools the radar components. The forward-facing inlet and rearward-facing outlet positions create a self-sustaining circulation pattern where the aircraft's forward movement automatically draws air through the housing, eliminating the need for external compression systems or active cooling mechanisms.
Solution Approach 2:
The invention extracts the cooling function from a complex mechanical system and transforms it into a passive aerodynamic solution. By positioning inlets and outlets to exploit natural airflow patterns generated by aircraft motion, the patent removes the need for compressors, routing systems, and active cooling infrastructure while maintaining effective thermal management.
2Temperature
If complex cooling systems are installed in aircraft, then radar component cooling is achieved, but the weight of the aircraft increases
Solution Approach 1:
The cooling system leverages the aircraft's existing motion through the air to generate the necessary airflow for cooling. By positioning the inlet forward and outlet rearward, the system uses the aircraft's forward velocity to naturally draw air through the radome housing, eliminating heavy mechanical cooling equipment and reducing overall aircraft weight.
3Speed
If ram air inlet is positioned forward of the outlet, then air flow enters the housing easily, but air circulation within the housing is insufficient for effective cooling
Solution Approach 1:
Instead of the conventional arrangement where the inlet is forward and outlet is rearward, the patent inverts this logic by positioning the inlet forward-facing but located at the rear of the housing, and the outlet rear-facing but located at the front. This inverted positioning creates a cross-flow pattern that forces air to traverse the entire length of the housing, maximizing circulation and cooling effectiveness.
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
This design effectively cools radar components without complex cooling systems, reducing weight, part count, and maintenance needs, while maintaining aerodynamic characteristics and radio wave transparency, and can be retrofitted onto existing systems without modifying the radar scanner components.
Implementation Method 1
when the radome is installed on the body of a moving craft, air flow relative to the craft will enter the housing by way of the ram air inlet, circulate within the housing, and exit the housing by way of the ram air outlet in order to cool radar components within the radar component housing
Data Source
AI summary
The invention relates to a radome (10) for cooling radar components (16). The radome (10) has a housing (12) provided with a ram air inlet (18)and a ram air outlet (20). The radome (10) is installed on the body of a moving craft so that air flowrelative to the craft will enter the housing (12) by way of the ram air inlet (18), circulate within the housing (12), and exit the housing (12) by way of the ram airoutlet (20) in order to cool radar components (16) within the radar componenthousing (12). A method of cooling radar components is also described.