Motor Driven Cooled Compressor System Airflow Integration
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Solution Overview
Problem
Existing compressor systems used for boundary-layer flow control on aircraft lack an efficient and lightweight cooling solution, which is essential for maintaining laminar flow and reducing drag.
Innovation Solution
A cooled compressor system that utilizes an airflow system to direct air through the electric motor and compressor, allowing the compressed air to cool the motor while being used for boundary-layer suction, eliminating the need for complex external air ducting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cooling solutions are used for the compressor system, then the motor can be cooled, but the system becomes heavier and more complex
Solution Approach 1:
The patent combines the cooling function with the existing air compression and boundary layer suction functions by routing the compressed air through the motor housing. The same air that is compressed for boundary layer control also serves to cool the motor, eliminating the need for separate cooling ducts and systems.
Solution Approach 2:
The compressed air serves multiple functions simultaneously: it cools the motor, maintains laminar flow on the aircraft surface through boundary layer suction, and provides cooling without requiring additional dedicated cooling infrastructure. This multi-functional use of compressed air resolves the contradiction between cooling effectiveness and system complexity.
2Temperature
If external air ducting is added for cooling, then the motor can be cooled, but the system becomes heavier
Solution Approach 1:
The patent eliminates the need for separate external air ducting by integrating the cooling pathway within the existing compressor housing. The air flows through channels formed by the motor housing itself, combining the cooling function with the structural components already present in the system.
Solution Approach 2:
The motor housing itself serves as the cooling channel structure, eliminating the need for additional external ducting. The system uses its own compressed air output to cool itself, and the housing structure performs both structural and fluid guidance functions, reducing overall system weight.
3Temperature
If compressed air is used for cooling, then cooling capacity increases, but the air is diverted from boundary layer suction
Solution Approach 1:
The patent merges the cooling airflow path with the boundary layer suction path by routing compressed air through the motor housing and then to the boundary layer suction outlets. The same compressed air that cools the motor also provides the suction force needed for laminar flow control, so cooling capacity increases without reducing boundary layer suction 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
The system effectively cools the electric motor and increases cooling capacity by using the compressed air, thereby enhancing the induction of laminar flow and reducing drag on aircraft surfaces.
Implementation Method 1
an airflow system in operation directs air through the back iron and in between the motor stator and motor rotor
Implementation Method 2
the air travels from the airflow inlet to the airflow outlet through the compressor and the airflow system
Implementation Method 3
a compressor that in operation compresses air
Data Source
AI summary
A cooled compressor system is provided including: a compressor that in operation compresses air; an electric motor that in operation drives the compressor, the electric motor having a back iron, a motor stator radially inward from the back iron, and a motor rotor radially inward from the motor stator; an airflow system fluidly connected to the compressor, the airflow system in operation directs air through the back iron and in between the motor stator and motor rotor; an airflow inlet that in operation allows an inflow of air to the airflow system; and an airflow outlet that in operation allows an outflow of air from the airflow system; wherein the air travels from the airflow inlet to the airflow outlet through the compressor and the airflow system.