ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,781, issued on May 13, was assigned to ROLLS-ROYCE plc (London).
"Operating an aircraft" was invented by Peter Swann (Derby, Great Britain), Craig W Bemment (Derby, Great Britain), Alastair G Hobday (Derby, Great Britain), Benjamin J Keeler (Derby, Great Britain) and Christopher P Madden (Derby, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of operating an aircraft including a gas turbine engine and a plurality of fuel tanks arranged to provide fuel to the gas turbine engine. At least two of the fuel tanks contain fuels with different fuel characteristics. The method includes obtaining a flight profile for a portion of a flig...