Please scroll down for the English version-UNNC scholar’s research on “green taxiing” wins national recognition.

近日，由寧波諾丁漢大學張何教授申報的《區(qū)域飛機“綠色滑行”高效機電能量轉換系統(tǒng)關鍵技術合作研究》獲得科技部國家重點研發(fā)計劃“政府間國際科技創(chuàng)新合作”重點專項立項，獲批176萬元立項資助。

該項目由張何教授作為主負責人，將與一帶一路合作國家馬耳他展開跨國合作，建立全球領先的“綠色滑行”高效機電能量轉化系統(tǒng)關鍵設計技術體系。

據(jù)張何介紹，航空產(chǎn)業(yè)產(chǎn)生的污染是很多人難以想象的。曾有科學研究表明，洛杉磯機場地面排放相當于1500公里長高速公路所產(chǎn)生的污染排放。尤其當飛機在地面滑行時，因為發(fā)動機處于低速區(qū)和低效率區(qū)，僅30分鐘就要消耗300kg的航空燃油。地面總消耗一般要占到整個短途區(qū)域飛機油耗的5-10%。不僅能源利用率顯著降低，并對機場調度和周邊環(huán)境空氣和噪聲污染帶來巨大壓力。

在此背景下，張何找到曾在歐盟清潔天空計劃中并肩作戰(zhàn)并建立了良好合作基礎的馬耳他大學。馬耳他曾提出要在2035年前將航空地面排放降低90%。作為一帶一路合作國家，馬耳他與中國的合作受到雙方國家政策支持，技術互補，且諾丁漢大學與馬耳他大學有著長期合作和學生交流項目。雙方一拍即合，于去年8月簽署合作協(xié)議。

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綠色電滑行技術是下一代區(qū)域飛機關鍵技術。

張何說，現(xiàn)有系統(tǒng)是在起飛前在地面上啟動飛機引擎，同時通過剎車來控制飛機滑行速度。降落時則同時使用擾流板、發(fā)動機發(fā)推和剎車完成。整個過程產(chǎn)生極大噪音，且剎車成本和維護成本極高。

而此次申報的項目將借助雙方的技術優(yōu)勢，通過合作研究，突破區(qū)域飛機“綠色滑行”系統(tǒng)級關鍵設計技術，拓展系統(tǒng)扭矩密度極限，提出世界領先水平的區(qū)域飛機“綠色滑行”高效驅動系統(tǒng)。飛機在地面滑行時不起動引擎，不需要推車，實現(xiàn)降耗高效運行，并降低剎車片與輪胎損耗，同時在飛機降落的時候實現(xiàn)動能的有效回收再利用，再次降低排放。

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全球范圍內(nèi)都在關注如何減少碳排放，提高各類交通工具的運行效率。發(fā)展‘綠色電滑行技術’符合聯(lián)合國可持續(xù)發(fā)展目標7——提供經(jīng)濟、可靠、可持續(xù)的現(xiàn)代能源。

張何介紹，該項目的核心問題是可靠性約束下機電能量轉換系統(tǒng)轉矩密度和效率的再提升。某種程度上，高可靠性和高轉矩密度和高效率是矛盾的，但團隊希望通過精確的計算分析模型，多學科協(xié)同系統(tǒng)集成與優(yōu)化設計，實現(xiàn)轉矩密度和效率的提升，達到國際領先水平。

當前，恰逢寧諾科研展，31個亮點科研案例在校內(nèi)學生服務樓、圖書館、理工樓等幾個主要建筑內(nèi)集中展出。緊扣聯(lián)合國可持續(xù)發(fā)展目標，該展從智能城市、創(chuàng)新材料、保護生態(tài)多樣性等多個角度展示學校在促進可持續(xù)發(fā)展方面的科研成就。

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人物名片

張 何

張何教授，博士生導師，現(xiàn)擔任浙江省多電飛機重點實驗室副主任和寧波諾丁漢大學智能電氣化研究院院長。

張何教授在高可靠性、高功率密度電機驅動系統(tǒng)在交通電氣化、特別是新能源汽車和多電飛機領域的應用取得了一系列具有世界先進水平的原創(chuàng)性研究和技術成果。

此前，張何教授曾領銜與中國商飛和中航工業(yè)合作完成的國產(chǎn)大飛機C9N9多項核心技術研發(fā)，開發(fā)了國產(chǎn)大飛機直流起發(fā)系統(tǒng)，其主要技術指標均超過波音787，被認為是為國產(chǎn)大飛機裝上了“金色動力”。

張何教授在研或已完成科技部政府間重點專項、國家自然基金、歐盟”清潔天空”計劃及省市級相關項目30余項。

張何教授作為IEEE高級會員共發(fā)表了SCI/EI論文超100篇，其中半數(shù)以上發(fā)表在SCI前10%的頂級期刊上，共申請發(fā)明專利30余項,包括3項國際專利。

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.

文字來源 | Lily Su

圖片來源 | 張何，往期推文

English | Elena Yang，ETT

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