Improved NOx Emission for High Speed Airbreathing Engines using Plasma Effects

随着公众和工业界越来越重视确保工程各方面的环境可持续性，航空部门不得不做出相应的调整。由于人为航空来源的颗粒物、挥发性有机化合物（VOCs）和氮氧化物排放对空气质量环境的有害影响，它们仍然是人们关注的焦点。2020年，国际民航组织（ICAO）航空环境保护委员会（CAEP）发布了新的排放标准，适用于2023年以后生产的超过一定推力的所有飞机发动机，该标准要求继续改善氮氧化物排放。虽然重点是改善当前和下一代亚音速燃气轮机发动机对环境的影响，但这种类型的审查只会在未来几年继续获得动力。因此，本提案旨在开发适用于正在开发的高速吸气式发动机的NOx排放评估工具，该发动机用于远高于音速阈值的飞行。除了合适的评估方法外，本提案还寻求研究和潜在应用小型介质阻挡放电（DBD）等离子体致动器在这些高速发动机中的影响，以努力减少其氮氧化物排放特性，而不会大幅降低其性能。使用作为该提案的一部分开发的工具和概念，可以在这些尚未投入使用的发动机的设计阶段考虑环境因素。这将产生比那些在没有这类信息的情况下开发的发动机更清洁，更环保的发动机（这可能需要昂贵的更改，以追溯应用，以满足未来肯定会应用的环境标准）。这不仅有助于改善环境，而且有助于培养能够影响航空航天领域一些最具挑战性研究课题方向的加拿大人才，同时在工程学科的前沿开发仿真技术。

With the ever in increasing emphasis of both the public, and the industrial community, on ensuring the environmental sustainability of all facets of engineering, the aviation sector has had to adjust accordingly. Anthropogenic aviation sourced particulate matter, volatile organic compounds (VOCs), and NOx emissions continue to be a focus of concern given their detrimental influence on the air quality environment. In 2020 the International Civil Aviation Organization's (ICAO) Committee on Aviation Environmental Protection (CAEP) issued new emission standards applicable to all aircraft engines producing over a given amount of thrust in production from 2023 onwards requireing among other things, a continued improvement in NOx emission. Although focused on improving the environmental impact of current and next generation subsonic gas turbine based engines, this type of scrutiny will only continue to gain traction in the coming years. As such, this proposal seeks to develop NOx emission evaluation tools suitable for high speed airbreathing engines under development on aircraft traveling well above the sonic threshold. In addition to suitable evaluation methodologies, this proposal also seeks to investigate and potentially apply the effects of small Dielelectric Barrier Discharge (DBD) plasma actuators within these high speed engines in an effort to reduce their NOx emission characteristics without substantially degrading their performance. Using the tools and concepts developed as part of this proposal, environmental considerations can be taken into effect during the design phase of these engines which have yet to be operationally deployed. This will yield cleaner, more environmentally friendly engines than those that are developed in the absence of this type of information (which would likely require costly changes applied retroactively in order to meet the environmental standards that most certainly will be applied in the future). Not only will this help the environment, but it will help train Canadian talent capable of influencing the direction of some of the most challenging research topics in the aerospace field, while at the same time developing simulation technologies at the leading edge of the engineering discipline.