Fuel and Engine Lubricant Requirements for the Concord

This paper states that the engines in the Concord supersonic airliner will be able to use existing aviation kerosene fuels for flight at a speed of Mach 2.2, and that it may not even be necessary to introduce a thermal stability requirement into the existing fuel specifications. Since existing synthetic turbine engine lubricants are not quite good enough, however, some improvement in this area is required, particularly in connection with thermal stability at high operating temperatures. Also included in this paper are detailed descriptions of three test rigs designed by Bristol Siddeley for the purpose of evaluating gas turbine engine lubricants.