Critical Review of the JFTOT Available to Purchase

The generation of JFTOT deposits and their subsequent assessment are reviewed, using results of a round-robin exercise involving four UK laboratories to study the precision of determining specification breakpoint temperature. A number of areas are identified in which the usefulness of the JFTOT as an aircraft fuel system simulator could be enhanced. Considerable variability was found in deposit assessment methods, and recommendations are made on how to overcome these for fuel research and specification purposes.