Novel Fuel-Flexible ultra-Low Emissions Combustion systems for Sustainable aviation (FFLECS)

正如最近的发动机开发项目所证实的那样，在改善机场当地空气质量的同时，可以通过转向可持续航空燃料（SAFs）和氢气（H2）来实现航空脱碳。然而，这两种燃料都需要燃气轮机燃烧器的重大发展，因为目前的技术不仅不能进一步减少长期标准和目标所期望的氮氧化物和颗粒物排放，而且通常不适合100%直接燃烧氢气。在这个项目中，将研究革命性的燃烧室结构，在科学范围和TRL方面扩展先前清洁天空2“创新nox减排技术”项目的初步成果。特别是，该项目将推进(i) Lean AzimuthalFlame (LEAFinnox)，一种基于无焰氧化的新型燃烧系统，（ii）紧凑螺旋排列燃烧器（CHAIRlift），一种使用相互作用的精益提升火焰的新系统，以及（iii）等离子体和电子操纵喷雾和火焰稳定机制。这些新概念提供的燃料灵活性是实现SAF和H2操作的关键。这一独特的特性将被用于新的双燃料LTO循环策略和超低氮氧化物、超低烟尘的单燃料或双燃料使用。将在可用的专用钻机上进行实验和数值工作，以提供基础和实用水平的知识，为项目结束时的TRL3和更高的开发提供支持。该项目将包括新的CFD，低阶和ai模型，以及成熟的商业开发的新型稳定技术。

Improving Local Air Quality at airports while at the same time decarbonising aviation can be achieved by switching to sustainableaviation fuels (SAFs) and hydrogen (H2), as confirmed by recent engine development programs. However, both these fuels requiresignificant developments in the gas-turbine combustor because present technologies not only to further reduce NOx and PM emissionsas expected by long-term standards and objectives but also are not normally suitable for 100% direct combustion of hydrogen. In thisproject, revolutionary combustor architectures will be studied, extending the preliminary results of previous Clean Sky 2 "Innovative NOxReduction Technologies" projects in terms of scientific scope and TRL. In particular, this project will advance (i) the Lean AzimuthalFlame (LEAFinnox), a novel combustion system based on Flameless Oxidation, (ii) the Compact Helically Arranged combustoR(CHAIRlift), a new system which uses interacting lean lifted flames, and (iii) plasma and electric manipulation of the spray and of theflame stabilisation mechanism. The fuel flexibility offered by these novel concepts is key to allow for SAF and H2 operations. Thisunique feature will be exploited to give novel dual-fuel LTO cycle strategies and ultra-low NOx, ultra-low soot single or dual-fuel use.Experiments on available dedicated rigs and numerical work will be performed to provide knowledge at the fundamental and practicallevel that will allow TRL3 and higher developments at the end of the project. The project will include new CFD, low-order, and AImodels, and novel stabilisation techniques ripe for commercial exploitation.