Thin liquid flow-through core with machined flow channels

Liquid Flow-Through (LFT) cooling, where coolant passes directly through the core of line replaceable modules, is a key technology for enabling high-density, low-cost avionics for military applications. A key component for implementing reliable LFT cooling is the module core itself. This paper describes the development of a very thin core with machined flow channels. It summarizes the benefits of the core´s design including improved producibility, enhanced thermal performance, simplified thermal analysis and ultimately reduced system operating costs. This paper describes trade-offs conducted to develop the core´s design. Thermal performance was optimized while meeting pressure drop and operating pressure requirements.