[1] Rolls Royce plc, Derby, Derbyshire, England
[2] Univ Nottingham, Dept Elect & Elect Engn, Nottingham, Nottinghamshire, England
[3] Univ Houston Syst, ECE, Houston, TX USA
[4] Cranfield Univ, Cranfield, Bedfordshire, England
[5] IHI Corp, Engine Technol Dept, Akishima, Japan