1. Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough LE12 7TW, UK
2. Whittle Laboratory, University of Cambridge, Cambridge CB3 0DY, UK
3. Tokyo Electric Power Company, Yokohama 230-8510, Japan
4. Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
5. Rolls-Royce plc, Derby DE24 8BJ, UK