国家科技部立项丨“绿色滑行”精尖技术助力区域飞机低碳排放
Please scroll down for the English version-UNNC scholar’s research on “green taxiing” wins national recognition.
近日,由宁波诺丁汉大学张何教授申报的《区域飞机“绿色滑行”高效机电能量转换系统关键技术合作研究》获得科技部国家重点研发计划“政府间国际科技创新合作”重点专项立项,获批176万元立项资助。
该项目由张何教授作为主负责人,将与一带一路合作国家马耳他展开跨国合作,建立全球领先的“绿色滑行”高效机电能量转化系统关键设计技术体系。
据张何介绍,航空产业产生的污染是很多人难以想象的。曾有科学研究表明,洛杉矶机场地面排放相当于1500公里长高速公路所产生的污染排放。尤其当飞机在地面滑行时,因为发动机处于低速区和低效率区,仅30分钟就要消耗300kg的航空燃油。地面总消耗一般要占到整个短途区域飞机油耗的5-10%。不仅能源利用率显著降低,并对机场调度和周边环境空气和噪声污染带来巨大压力。
在此背景下,张何找到曾在欧盟清洁天空计划中并肩作战并建立了良好合作基础的马耳他大学。马耳他曾提出要在2035年前将航空地面排放降低90%。作为一带一路合作国家,马耳他与中国的合作受到双方国家政策支持,技术互补,且诺丁汉大学与马耳他大学有着长期合作和学生交流项目。双方一拍即合,于去年8月签署合作协议。
绿色电滑行技术是下一代区域飞机关键技术。
张何说,现有系统是在起飞前在地面上启动飞机引擎,同时通过刹车来控制飞机滑行速度。降落时则同时使用扰流板、发动机发推和刹车完成。整个过程产生极大噪音,且刹车成本和维护成本极高。
而此次申报的项目将借助双方的技术优势,通过合作研究,突破区域飞机“绿色滑行”系统级关键设计技术,拓展系统扭矩密度极限,提出世界领先水平的区域飞机“绿色滑行”高效驱动系统。飞机在地面滑行时不起动引擎,不需要推车,实现降耗高效运行,并降低刹车片与轮胎损耗,同时在飞机降落的时候实现动能的有效回收再利用,再次降低排放。
全球范围内都在关注如何减少碳排放,提高各类交通工具的运行效率。发展‘绿色电滑行技术’符合联合国可持续发展目标7——提供经济、可靠、可持续的现代能源。
张何介绍,该项目的核心问题是可靠性约束下机电能量转换系统转矩密度和效率的再提升。某种程度上,高可靠性和高转矩密度和高效率是矛盾的,但团队希望通过精确的计算分析模型,多学科协同系统集成与优化设计,实现转矩密度和效率的提升,达到国际领先水平。
当前,恰逢宁诺科研展,31个亮点科研案例在校内学生服务楼、图书馆、理工楼等几个主要建筑内集中展出。紧扣联合国可持续发展目标,该展从智能城市、创新材料、保护生态多样性等多个角度展示学校在促进可持续发展方面的科研成就。
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人物名片
张 何
张何教授,博士生导师,现担任浙江省多电飞机重点实验室副主任和宁波诺丁汉大学智能电气化研究院院长。
张何教授在高可靠性、高功率密度电机驱动系统在交通电气化、特别是新能源汽车和多电飞机领域的应用取得了一系列具有世界先进水平的原创性研究和技术成果。
此前,张何教授曾领衔与中国商飞和中航工业合作完成的国产大飞机C9N9多项核心技术研发,开发了国产大飞机直流起发系统,其主要技术指标均超过波音787,被认为是为国产大飞机装上了“金色动力”。
张何教授在研或已完成科技部政府间重点专项、国家自然基金、欧盟”清洁天空”计划及省市级相关项目30余项。
张何教授作为IEEE高级会员共发表了SCI/EI论文超100篇,其中半数以上发表在SCI前10%的顶级期刊上,共申请发明专利30余项,包括3项国际专利。
UNNC scholar’s research on “green taxiing” wins national recognition
A project on “green taxiing”, led by Professor He Zhang, Director of the Nottingham Electrification Centre, has been approved by the Ministry of Science and Technology (MOST) of China as an "Intergovernmental International Cooperation on Scientific and Technological Innovation" programme, and obtained a Major-Project funding of RMB 1.76 million.
Named “REducing AirCraft Taxiing emissIons through energy recoVery and storagE (REACTIVE)”, the project is an international collaborative project with Malta, a Belt-and-Road partner country, to establish a world-leading regional aircraft "green taxiing" high-efficiency drive system.
According to Professor Zhang, the aviation industry produces an unimaginable amount of pollution. Studies have shown that ground emissions at LAX International Airport are equivalent to pollution emissions generated by a 1,500 km-long highway. When an aircraft is taxiing on the ground, 300kg of aviation fuel will be consumed in just 30 minutes, which not only accounts for 5-10% of the overall fuel consumption of aircraft in the short-haul region, but also puts pressure on airport scheduling and the environment with air and noise pollution.
Therefore, Professor Zhang approached the University of Malta, with whom he has previously collaborated on the European CleanSky plan. Malta has proposed to reduce aviation ground emissions by 90% by 2035. The University of Nottingham has a long-standing strategic partnership and student exchange programmes with the University of Malta. Therefore, the two sides signed a collaboration agreement to develop green taxiing technology in August 2020.
"Green taxiing technology is key to developing the next generation of regional aircraft," said Professor Zhang. The existing system starts the aircraft's engine on the ground before take-off and controls the taxiing speed by braking. Landing is completed via spoilers, engine launch thrust and brake pads, which is noisy and costly.
The project will take advantages of both parties’ expertise to break through the key design technology for system torque density limit and a world-leading regional aircraft "green taxiing" high-efficiency drive system. This will enable the aircraft to operate efficiently without starting the engine or pushing the trolley while taxiing on the ground and reducing the wear on the brake pads and tyres.
"High reliability is contradictory to high torque density and high efficiency, but we hope to improve efficiency and torque density to a world-leading level through more accurate models, multi-disciplinary integration system and optimised design," said Professor Zhang.
Targeted at reducing fuel consumption, brake pads and tire wearing, as well as increasing the airport operation efficiency, the project is one of the University’s contributing efforts to the United Nations’ Sustainable Development Goals (SDG).
Currently, there is an ongoing Research Exhibition titled “Creating a sustainable world” in the Portland Building, the Library and the Sir Peter Mansfield Building, celebrating UNNC academics’ research achievements that contributes to the SDGs. The exhibition includes 31 highlighted research cases, focusing on widely concerned issues such as mitigating the impact of climate change, developing green and sustainable composite materials, utilising digital technology for sustainable cultural heritage and managing sustainable marine systems.
You are welcome to explore the variety of research projects on site or view more details online by clicking “Read more” below.
文字来源 | Lily Su
图片来源 | 张何,往期推文
English | Elena Yang,ETT
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