Rolls Royce and Oxford create greener jet engines

Rolls Royce and Oxford create greener jet engines

Lighter, faster, more environmentally friendly jet engines are being created as the result of a collaboration between researchers at the University of Oxford and Rolls-Royce design engineers.

Watch Professor Li He explain Oxford's work with Rolls Royce on understanding better how turbines function at high temperatures: making jet engines greener, and turbines cheaper to run.

Despite growing awareness of environmental concerns, air travel continues to be popular, not least because of its increasing attainability for more people in countries like India and China. Fortunately, today’s aircraft engines are becoming ever more efficient: over the past couple of decades, manufacturers have reduced their emissions by a factor of two over ten years. These advances in technology are due in no small part to collaborative research with academia. In 1990 Rolls-Royce established its first University Technology Centre (UTC) at the University of Oxford. Researchers at the UTC in Solid Mechanics undertake strategic and applied research relevant to the company’s technology base, providing valuable expertise at the cutting edge of research and developing a close working relationship with Rolls-Royce engineers.

Alexander Korsunsky, Professor of Engineering Science, is using facilities at the Diamond Light Source, the UK national synchrotron facility, to investigate exactly what is going on inside an aeroplane engine during operation. Diamond generates brilliant beams of light at wavelengths from ‘soft’ to ‘hard’ X-rays.

Professor Korsunsky and his colleagues are using ‘X-ray vision’ to examine in 3D the shape and stresses within components in an aeroengine, to a resolution down to about one-hundredth of the width of a human hair. As a rule, engines run more efficiently the hotter the combustion products within them are allowed to become. An engine’s capability to reach high temperatures is, however, affected by how its component materials respond to heat – do they melt, crack, or fail in some other way? Research input in developing new materials and manufacturing techniques is paving the way towards designing the next generation of efficient ‘green’ engines.

Funded by: EPSRC, STFC, TSB, Royal Society, RAEng, and Rolls-Royce.

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