Transient Heat Load Management for Future Advanced Aircraft

未来的先进飞机工程师面临着一个相当大的技术挑战，设计热管理系统（TMS）的足够能力的可用空间。TMS的热交换器（HE）是最大的组件，旨在满足最大热负荷，仅在飞行周期的一小部分期间经历，并导致大部分飞行的超大系统。使用相变被视为一种可能的选择，可以用于减少TMS的大小。它将被用来存储在恒定的相变温度下的瞬态热负荷，然后在不太剧烈的条件下被拒绝。本研究将通过相变材料（PCM）热交换器（HE）研究和评估新型瞬态热存储技术，也称为热电池设计或先进飞机TMS工作流体中相变材料的微膨胀。数值建模、CFD（热量和流体流动以及熔化/凝固的相变）以及实验可用于开发现有和/或概念解决方案的验证模型。在任何物理原型和实验的情况下，BAE系统公司的增材层制造（ALM）设施可以用于生产最先进的组件。

Future advanced aircraft engineers face an appreciable technical challenge to design Thermal Management System (TMS) of adequate capacity within the available space. Heat Exchangers (HE) of TMS are the largest components and are designed to meet the maximum heat duty, experienced only during a fraction of flight cycle and resulting in over-sized system for the majority of the flight. Using phase-change is seen as a possible option which could be used in reducing the size of TMS. It would be used to store the transient heat loads at constant temperature of phase change which would then be rejected under less strenuous conditions. This research will investigate and evaluate novel transient heat storage technologies through Phase Change Material (PCM) Heat Exchanger (HE), also known as heat battery design or micro-encapsulations of phase-change materials within the working fluid for advanced aircraft TMS. Numerical modelling, CFD (heat and fluid flow and phase change of melting/solidification) together with the experiments could be used to develop validated models of existing and/or conceptual solutions. In the event of any physical prototyping and experimentation, BAE Systems Additive Layer Manufacturing (ALM) facilities could be utilised in producing state-of-the-art components.